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{{Short description|Category 3 Australian region tropical cyclone in 2012}}
{{EngvarB|date=October 2017}}
{{Use dmy dates|date=October 2017}}
{{good article}}
{{good article}}
{{infobox weather event
{{Infobox Hurricane
| Name=Severe Tropical Cyclone Lua
| name = Severe Tropical Cyclone Lua
| image = Lua Mar 17 2012 0220Z.jpg
| Type=cyclone
| caption = Cyclone Lua near landfall on 17 March
| Year=2012
| formed = 12 March 2012
| Basin=Aus
| Image location=Lua Mar 17 2012 0215Z.jpg
| dissipated = 18 March 2012
}}{{infobox weather event/BOM
| Image name=Cyclone Lua near landfall on 17 March
| winds = 85
| Formed=12 March 2012
| gusts = 120
| Dissipated=18 March 2012
| pressure = 935
| 1-min winds=95
}}{{infobox weather event/JTWC
| 10-min winds=90
| Gusts=125
| winds = 95
| pressure = 952
| Pressure=930
}}{{infobox weather event/Effects
| Damages=230
| year = 2012
| Damagespre=>
| Fatalities=None
| fatalities = None
| damage = 230000000
| Areas=[[Western Australia]]
| damage-prefix = >
| Hurricane season=[[2011–12 Australian region cyclone season]]
| areas = [[Western Australia]]
| refs =
}}{{infobox weather event/Footer
| season = [[2011–12 Australian region cyclone season]]
}}
}}
'''Severe Tropical Cyclone Lua''' affected a sparsely populated region of [[Western Australia]] during mid-March 2012. Originating in a broad low pressure area that formed northwest of Australia by 8 March, the storm was plagued by inhibiting [[wind shear]] for the duration of its formative stages. However, it gradually organized, and received the name Lua on 13 March. The cyclone meandered for the first several days of its existence, caught between weak and competing steering currents. After the cyclone drifted northwestward, a building [[ridge (meteorology)|ridge]] of high pressure to the north drove Lua southeastward toward the [[Pilbara]] region. Ultimately intensifying into a borderline [[Tropical_cyclone_scales#Australia|Category 4 severe tropical cyclone]] with maximum sustained 10-minute winds of 165 km/h (105 mph), Lua made [[landfall (meteorology)|landfall]] near the remote community of Pardoo, about 150 km (95 mi) east of [[Port Hedland, Western Australia|Port Hedland]]. It steadily weakened as it progressed south over interior Western Australia, diminishing below tropical cyclone status on 18 March.
'''Severe Tropical Cyclone Lua''' affected a sparsely populated region of [[Western Australia]] during mid-March 2012. Originating in a broad low pressure area that formed northwest of Australia by 8 March, the storm was plagued by inhibiting [[wind shear]] for the duration of its formative stages. However, it gradually organised, and received the name Lua on 13 March. The cyclone meandered for the first several days of its existence, caught between weak and competing steering currents. After the cyclone drifted northwestward, a building [[ridge (meteorology)|ridge]] of high pressure to the north drove Lua southeastward toward the [[Pilbara]] region. Ultimately intensifying into an upper-end [[Tropical cyclone scales#Australia|Category 3 severe tropical cyclone]] with maximum sustained 10-minute winds of {{convert|155|km/h|mph|abbr=on}}, Lua made [[landfall (meteorology)|landfall]] near the remote community of Pardoo, about {{convert|150|km|mi|abbr=on}} east of [[Port Hedland, Western Australia|Port Hedland]]. It steadily weakened as it progressed south over interior Western Australia, diminishing below tropical cyclone status on 18 March.


The threat of the impending cyclone halted local industries such as oil production and [[iron ore]] mining and exporting. The [[Port of Port Hedland]], a highly important iron ore shipping terminal, was forced to close for about 52 hours, contributing to inflated iron ore prices and delayed shipments. Multiple companies suspended work at oil fields and mines throughout the region, cutting national oil production by 25% and iron ore exports by 4.7% versus the previous month. Overall, Lua is attributed to $217 million (2012 [[Australian dollar|AUD]]; $230 million 2012 [[United States Dollar|USD]]) in lost revenue. Lua produced strong winds and widespread rainfall on land, but damage was limited by the lack of population in the storm's path. The [[List of roadhouses in Western Australia|Pardoo Roadhouse]] bore the brunt of the storm, and damage was reported at several other [[cattle station]]s and homesteads; at these sites, the storm damaged the exteriors of various structures and brought down swaths of trees. Central Western Australia endured several days of record-breaking rainfall and cool weather. The [[Government of Western Australia]] provided disaster relief funds to the hardest-hit areas, and ''Lua'' was later [[List of retired Australian cyclone names|retired]] from the list of tropical cyclone names.
The threat of the impending cyclone halted local industries such as oil production and iron ore mining and exporting. The [[Port of Port Hedland]], a highly important iron ore shipping terminal, was forced to close for about 52 hours, contributing to inflated iron ore prices and delayed shipments. Multiple companies suspended work at oil fields and mines throughout the region, cutting national oil production by 25% and iron ore exports by 4.7% versus the previous month. Overall, Lua is attributed to $217 million (2012 [[Australian dollar|AUD]]; $230 million 2012 [[United States Dollar|USD]]) in lost revenue. Lua produced strong winds and widespread rainfall on land, but damage was limited by the lack of population in the storm's path. The [[List of roadhouses in Western Australia|Pardoo Roadhouse]] bore the brunt of the storm, and damage was reported at several other [[cattle station]]s and homesteads; at these sites, the storm damaged the exteriors of various structures and brought down swaths of trees. Central Western Australia endured several days of record-breaking rainfall and cool weather. The [[Government of Western Australia]] provided disaster relief funds to the hardest-hit areas, and ''Lua'' was later [[List of retired Australian cyclone names|retired]] from the list of tropical cyclone names.


==Meteorological history==
==Meteorological history==
{{storm path|Lua 2012 track.png}}
{{storm path|Lua 2012 track.png}}
Cyclone Lua originated in a broad area of disturbed weather that was spawned by a deep [[trough (meteorology)|trough]] of low pressure and enhanced by a [[Madden–Julian oscillation]] pulse.<ref name="bomreport"/> The precursor to Lua was first identified through satellite imagery by 8 March 2012, while situated about {{convert|1100|km|mi|abbr=on}} to the north-northwest of [[RAAF Learmonth|Learmonth]].<ref name="start"/> Analysis of the disturbance revealed a diffuse low-level center of circulation loosely bounded by sporadic, but multiplying, convection.<ref name="start">{{cite web|title=Significant Tropical Weather Advisory for the Indian Ocean, 8 March 2012 1951z|date=8 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/665qxYGRk}}</ref> On 9 March, the [[Bureau of Meteorology]]'s (BoM) Tropical Cyclone Warning Center (TCWC) in [[Perth]] recognized the developing system and remarked on the potential for tropical cyclone formation over the following several days.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone three-day outlook for the Western Region, 12:47pm WST on Friday the 9th of March 2012|date=9 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/665rDvD7L}}</ref> The low pressure area meandered for several days, making some progress toward the east, and gradually consolidated.<ref name="ibtracs">{{cite web|author=International Best Track Archive for Climate Stewardship|title=2012 LUA (2012069S14111)|publisher=University of North Carolina, Asheville|accessdate=22 November 2013|url=http://atms.unca.edu/ibtracs/ibtracs_current/browse-ibtracs/index.php?name=v03r05-2012069S14111}}</ref>
Cyclone Lua originated in a broad area of disturbed weather that was spawned by a deep [[trough (meteorology)|trough]] of low pressure and enhanced by a [[Madden–Julian oscillation]] pulse.<ref name="bomreport">{{cite web|url=http://www.bom.gov.au/announcements/sevwx/wa/watc20120309.shtml|title=Severe Tropical Cyclone Lua|publisher=Bureau of Meteorology|access-date=22 November 2013}}</ref> The precursor to Lua was first identified through satellite imagery by 8 March 2012, while situated about {{convert|1100|km|mi|abbr=on}} to the north-northwest of [[RAAF Learmonth|Learmonth]].<ref name="start"/> Analysis of the disturbance revealed a diffuse low-level centre of circulation loosely bounded by sporadic, but multiplying, convection.<ref name="start">{{cite web|title=Significant Tropical Weather Advisory for the Indian Ocean, 8 March 2012 1951z |date=8 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201203090000.htm |url-status=dead |archive-url=https://archive.today/20240522032039/https://www.webcitation.org/665qxYGRk?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201203090000.htm |archive-date=22 May 2024 }}</ref> On 9 March, the [[Bureau of Meteorology]]'s (BoM) Tropical Cyclone Warning Center (TCWC) in [[Perth]] recognised the developing system and remarked on the potential for [[tropical cyclone formation]] over the following several days.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone three-day outlook for the Western Region, 12:47&nbsp;pm WST on Friday the 9th of March 2012 |date=9 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/IDW10800_201203090447.htm |url-status=dead |archive-url=https://archive.today/20240522032118/https://www.webcitation.org/665rDvD7L?url=http://gwydir.demon.co.uk/advisories/IDW10800_201203090447.htm |archive-date=22 May 2024 }}</ref> The low pressure area meandered for several days, making some progress toward the east, and gradually consolidated.<ref name="ibtracs">{{cite web|author=International Best Track Archive for Climate Stewardship|title=2012 LUA (2012069S14111)|publisher=University of North Carolina, Asheville|access-date=22 November 2013|url=http://atms.unca.edu/ibtracs/ibtracs_current/browse-ibtracs/index.php?name=v03r05-2012069S14111|archive-url=https://web.archive.org/web/20160305083130/http://atms.unca.edu/ibtracs/ibtracs_current/browse-ibtracs/index.php?name=v03r05-2012069S14111|archive-date=5 March 2016|url-status=dead}}</ref>


By 12 March, the system had developed persistent deep [[convection (meteorology)|convection]] over the eastern half of its core and organized [[rainband|banding features]] elsewhere. Moderate vertical [[wind shear]] initially hampered intensification,<ref>{{cite web|title=Significant Tropical Weather Advisory for the Indian Ocean, 12 March 2012 0752z|date=12 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/667Vui514}}</ref> though the BoM designated the system Tropical Low ''16U''; at the time, it was centered roughly {{convert|230|km|mi|abbr=on}} northwest of [[Karratha, Western Australia]].<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone three-day outlook for the Western Region, 12:27pm WST on Friday the 12th of March 2012|date=12 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/6682hy48x}}</ref> At 2300 [[Universal Coordinated Time|UTC]] on 12 March, the [[Joint Typhoon Warning Center]] (JTWC) issued a [[Tropical Cyclone Formation Alert]].<ref>{{cite web|title=Tropical Cyclone Formation Alert, 12 March 2012 2300z|date=12 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2012|url=http://www.webcitation.org/667VZJLS7}}</ref> With increasingly favorable environmental conditions&mdash;including warm ocean waters and dwindling wind shear&mdash;the low organized significantly between 12 and 13 March, and at 0600 UTC on the 13th, TCWC Perth upgraded the low to Tropical Cyclone ''Lua''.<ref name="lua">{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 0704z 13/03/2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/6682mm149}}</ref> Simultaneously, the JTWC issued its first tropical cyclone warning on ''17S''.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 1|date=13 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/669cxfLo5}}</ref> Contrary to real-time operations, the official BoM "best track" database does not list the storm as having attained [[Tropical_cyclone_scales#Australia|Category 1 tropical cyclone]] intensity until 0000 UTC on 14 March.<ref name="ibtracs"/>
By 12 March, the system had developed persistent deep [[convection (meteorology)|convection]] over the eastern half of its core and organised [[rainband|banding features]] elsewhere. Moderate vertical [[wind shear]] initially hampered intensification,<ref>{{cite web|title=Significant Tropical Weather Advisory for the Indian Ocean, 12 March 2012 0752z |date=12 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201203121000.htm |url-status=dead |archive-url=https://archive.today/20240522032200/https://www.webcitation.org/667Vui514?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201203121000.htm |archive-date=22 May 2024 }}</ref> though the BoM designated the system Tropical Low ''16U''; at the time, it was centred roughly {{convert|230|km|mi|abbr=on}} northwest of [[Karratha, Western Australia]].<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone three-day outlook for the Western Region, 12:27&nbsp;pm WST on Friday the 12th of March 2012 |date=12 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/IDW10800_201203120427.htm |url-status=dead |archive-url=https://archive.today/20240522032241/https://www.webcitation.org/6682hy48x?url=http://gwydir.demon.co.uk/advisories/IDW10800_201203120427.htm |archive-date=22 May 2024 }}</ref> At 2300 [[Universal Coordinated Time|UTC]] on 12 March, the [[Joint Typhoon Warning Center]] (JTWC) issued a [[Tropical Cyclone Formation Alert]].<ref>{{cite web|title=Tropical Cyclone Formation Alert, 12 March 2012 2300z |date=12 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2012 |url=http://weather.noaa.gov/pub/data/raw/wt/wtxs22.pgtw..txt |url-status=dead |archive-url=https://web.archive.org/web/20111021130546/http://weather.noaa.gov/pub/data/raw/wt/wtxs22.pgtw..txt |archive-date=21 October 2011 }}</ref> With increasingly favourable environmental conditions—including warm ocean waters and dwindling wind shear—the low organised significantly between 12 and 13 March, and at 0600 UTC on the 13th, TCWC Perth upgraded the low to Tropical Cyclone ''Lua''.<ref name="lua">{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 0704z 13/03/2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203130705.htm |url-status=dead |archive-url=https://archive.today/20240522032319/https://www.webcitation.org/6682mm149?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203130705.htm |archive-date=22 May 2024 }}</ref> Simultaneously, the JTWC issued its first tropical cyclone warning on ''17S''.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 1 |date=13 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203130900.htm |url-status=dead |archive-url=https://archive.today/20240522032440/https://www.webcitation.org/669cxfLo5?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203130900.htm |archive-date=22 May 2024 }}</ref> Contrary to real-time operations, the official BoM "best track" database does not list the storm as having attained [[Tropical cyclone scales#Australia|Category 1 tropical cyclone]] intensity until 0000 UTC on 14 March.<ref name="ibtracs"/>


At the time of its designation, Lua was nearly stationary in terms of forward movement, caught in the equilibrium between a blocking [[ridge (meteorology)|ridge]] to the southwest and increasing [[monsoon|monsoonal]] winds from the northwest.<ref name="lua"/> The ridge began to drive Lua north-northwestward at up to {{convert|20|km/h|mph|abbr=on}},<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 0145z 14/03/2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/669c8xqzl}}</ref> before the storm resumed its slow pace on 14 March.<ref name="mwr">{{cite web|author=Western Australia Climate Services Centre|title=March 2012 Western Australia Monthly Weather Review|date=24 May 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.bom.gov.au/climate/mwr/wa/mwr-wa-201203.pdf}}</ref> The storm remained relatively disorganized, its strengthening limited by moderate wind shear and dry air entering its center. Consequently, a large void of thunderstorm activity created a "horseshoe pattern".<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 5|date=14 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/66CqRfQPQ}}</ref> Nonetheless, Lua proved resilient, and good outflow helped compensate for the adverse shear.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 6|date=14 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/66CqRZ9jB}}</ref> The southwesterly steering currents weakened, causing the storm to begin its anticipated curve toward the east and east-southeast.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 0104z 15/03/2012|date=15 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66B7ql7lT}}</ref> According to the JTWC, the storm completed a small loop as a result of competing steering factors. At the same time, the upper levels of the atmosphere became far more conducive to the cyclone's intensification, and the storm's banding pattern tightened.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 7|date=14 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/66CqRSeUS}}</ref> With a building ridge to its north, Lua accelerated east-southeastward on 15 March,<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 8|date=15 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/66CqPfils}}</ref> and with wind shear oscillating but generally decreasing, the storm became a Category 3 severe tropical cyclone at 1800 UTC.<ref name="ibtracs"/>
At the time of its designation, Lua was nearly stationary in terms of forward movement, caught in the equilibrium between a blocking [[ridge (meteorology)|ridge]] to the southwest and increasing [[monsoon]]al winds from the northwest.<ref name="lua"/> The ridge began to drive Lua north-northwestward at up to {{convert|20|km/h|mph|abbr=on}},<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 0145z 14/03/2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203140145.htm |url-status=dead |archive-url=https://archive.today/20240522032357/https://www.webcitation.org/669c8xqzl?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203140145.htm |archive-date=22 May 2024 }}</ref> before the storm resumed its slow pace on 14 March.<ref name="mwr">{{cite web|author=Western Australia Climate Services Centre|title=March 2012 Western Australia Monthly Weather Review|date=24 May 2012|publisher=Bureau of Meteorology|access-date=22 November 2013|url=http://www.bom.gov.au/climate/mwr/wa/mwr-wa-201203.pdf}}</ref> The storm remained relatively disorganised, its strengthening limited by moderate wind shear and dry air entering its centre. Consequently, a large void of thunderstorm activity created a "horseshoe pattern".<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 5 |date=14 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203141500.htm |url-status=dead |archive-url=https://archive.today/20240522032722/https://www.webcitation.org/66CqRfQPQ?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203141500.htm |archive-date=22 May 2024 }}</ref> Nonetheless, Lua proved resilient, and good outflow helped compensate for the adverse shear.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 6 |date=14 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203142100.htm |url-status=dead |archive-url=https://archive.today/20240522032840/https://www.webcitation.org/66CqRZ9jB?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203142100.htm |archive-date=22 May 2024 }}</ref> The southwesterly steering currents weakened, causing the storm to begin its anticipated curve toward the east and east-southeast.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 0104z 15/03/2012 |date=15 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203150104.htm |url-status=dead |archive-url=https://archive.today/20240522032518/https://www.webcitation.org/66B7ql7lT?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203150104.htm |archive-date=22 May 2024 }}</ref> According to the JTWC, the storm completed a small loop as a result of competing steering factors. At the same time, the upper levels of the atmosphere became far more conducive to the cyclone's intensification, and the storm's banding pattern tightened.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 7 |date=14 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203150900.htm |url-status=dead |archive-url=https://archive.today/20240522032759/https://www.webcitation.org/66CqRSeUS?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203150900.htm |archive-date=22 May 2024 }}</ref> With a building ridge to its north, Lua accelerated east-southeastward on 15 March,<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 8 |date=15 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203152100.htm |url-status=dead |archive-url=https://archive.today/20240522032600/https://www.webcitation.org/66CqPfils?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203152100.htm |archive-date=22 May 2024 }}</ref> and with wind shear oscillating but generally decreasing, the storm became a Category 3 severe tropical cyclone at 1800 UTC.<ref name="ibtracs"/>


Continuing to intensify, Lua began to exhibit an ill-defined [[eye (cyclone)|eye]] on visible satellite imagery on 16 March. The storm was expansive, producing storm-force winds in a circular area {{convert|850|km|mi|abbr=on}} across.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 0701z 16/03/2012|date=16 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66E9jUvHD}}</ref> Still, the deepest convection and most favorable outflow was focused away from the eastern semicircle due to persistent light easterly wind shear.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 9|date=16 March 2012|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://www.webcitation.org/66CqPZaQa}}</ref> The storm's structure improved throughout the day and into the night,<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 1853z 16/03/2012|date=16 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66E9jIUw2}}</ref> and at 2000 UTC on 16 March, the storm attained its peak 10-minute maximum sustained winds of 165 km/h (105 mph), classifying it as a low-end Category 4 severe tropical cyclone.<ref name="bomreport">{{cite web|title=Severe Tropical Cyclone Lua|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.bom.gov.au/announcements/sevwx/wa/watc20120309.shtml}}</ref> Early on 17 March, the storm turned due south toward the [[Pilbara]] coast, and the JTWC reported that Lua's peak strength was marked by 1-minute sustained winds of 175 km/h (110 mph), at 0600 UTC.<ref>{{cite web|title=17S.Lua Best Track|format=txt|publisher=Joint Typhoon Warning Center|accessdate=22 November 2013|url=http://199.9.2.143/tcdat/tc12/SHEM/17S.LUA/trackfile.txt}}</ref> At its deepest, the storm possessed a central barometric pressure of {{convert|930|hPa|inHg|abbr=on|lk=on}}. Lua made [[landfall (meteorology)|landfall]] near [[Pardoo Station|Pardoo]], about 150 km (95 mi) east-northeast of [[Port Hedland, Western Australia|Port Hedland]], at 3 pm 17 on the 17th [[Time in Australia|Western Australia Standard Time]] (0700 UTC), while still at peak intensity.<ref name="bomreport"/> The cyclone steadily weakened as it progressed southward,<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Technical Bulletin, 2109z 17/03/2012|date=17 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66FhX06Ji}}</ref> tracking directly over the [[Yarrie mine]] before passing about halfway between [[Newman, Western Australia|Newman]] and [[Jigalong]].<ref name="bomreport"/> With little extant convection and a shallow, exposed center, Lua deteriorated below tropical cyclone status early on 18 March near [[Wiluna, Western Australia|Wiluna]]. The cyclone's remnants later entered the [[Goldfields-Esperance]] region.<ref name="mwr"/>
Continuing to intensify, Lua began to exhibit an ill-defined [[eye (cyclone)|eye]] on visible satellite imagery on 16 March. The storm was expansive, producing storm-force winds in a circular area {{convert|850|km|mi|abbr=on}} across.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 0701z 16/03/2012 |date=16 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203160701.htm |url-status=dead |archive-url=https://archive.today/20240522033003/https://www.webcitation.org/66E9jUvHD?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203160701.htm |archive-date=22 May 2024 }}</ref> Still, the deepest convection and most favourable outflow was focused away from the eastern semicircle due to persistent light easterly wind shear.<ref>{{cite web|title=Tropical Cyclone 17S (Lua) Warning Number 9 |date=16 March 2012 |publisher=Joint Typhoon Warning Center |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203160900.htm |url-status=dead |archive-url=https://archive.today/20240522032641/https://www.webcitation.org/66CqPZaQa?url=http://gwydir.demon.co.uk/advisories/WTXS32-PGTW_201203160900.htm |archive-date=22 May 2024 }}</ref> The storm's structure improved throughout the day and into the night,<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 1853z 16/03/2012 |date=16 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203161853.htm |url-status=dead |archive-url=https://archive.today/20240522032920/https://www.webcitation.org/66E9jIUw2?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203161853.htm |archive-date=22 May 2024 }}</ref> and at 1800 UTC on 16 March, the storm attained its peak 10-minute maximum sustained winds of {{convert|155|km/h|mph|abbr=on}}, classifying it as an upper-end Category 3 severe tropical cyclone.<ref>{{Cite web|url=http://www.bom.gov.au/cyclone/history/index.shtml|title=Tropical Cyclones|last=Meteorology|first=corporateName=Bureau of|publisher=bom.gov.au|access-date=9 August 2017}}</ref> Early on 17 March, the storm turned due south toward the [[Pilbara]] coast, and the JTWC reported that Lua's peak strength was marked by 1-minute sustained winds of {{convert|175|km/h|mph|abbr=on}}, at 0600 UTC.<ref>{{cite web|title=17S.Lua Best Track|format=txt|publisher=Joint Typhoon Warning Center|access-date=22 November 2013|url=https://www.nrlmry.navy.mil//tcdat/tc12/SHEM/17S.LUA/trackfile.txt}}</ref> At its deepest, the storm possessed a central barometric pressure of {{convert|935|hPa|inHg|abbr=on}}. Lua made [[landfall (meteorology)|landfall]] near [[Pardoo Station|Pardoo]], about {{convert|150|km|mi|abbr=on}} east-northeast of [[Port Hedland, Western Australia|Port Hedland]], at 0700 UTC while still at peak intensity.<ref name="bomreport"/> The cyclone steadily weakened as it progressed southward,<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Technical Bulletin, 2109z 17/03/2012 |date=17 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203172109.htm |url-status=dead |archive-url=https://archive.today/20240522033041/https://www.webcitation.org/66FhX06Ji?url=http://gwydir.demon.co.uk/advisories/AXAU01-APRF_201203172109.htm |archive-date=22 May 2024 }}</ref> tracking directly over the [[Yarrie mine]] before passing about halfway between [[Newman, Western Australia|Newman]] and [[Jigalong]].<ref name="bomreport"/> With little extant convection and a shallow, exposed centre, Lua deteriorated below tropical cyclone status early on 18 March near [[Wiluna, Western Australia|Wiluna]]. The cyclone's remnants later entered the [[Goldfields-Esperance]] region.<ref name="mwr"/>


==Preparations and economic impact==
==Preparations and economic impact==
[[File:16-U Mar 13 2012 0132Z.jpg|thumb|Tropical Low 16U meandering off the Australian coast on 13 March]]
The BoM hoisted its first Cyclone Watch on 14 March for coastal areas between [[Mardie Station]] and [[Cape Leveque]].<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Advice Number 1|date=14 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/6698HvgZs}}</ref> A Cyclone Warning was posted the next day for a smaller stretch of coastline within that range.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Advice Number 6|date=15 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66B01LM5q}}</ref> As Lua approached the coastline, the Cyclone Warning was in place from Cape Leveque to [[Dampier, Western Australia|Dampier]]. Communities between [[Bidyadanga Community, Western Australia|Bidyadanga]] and [[Port Hedland, Western Australia|Port Hedland]] were under a Red Alert, the highest level of caution issued by the [[Department of Fire and Emergency Services|Fire and Emergency Services Authority of Western Australia]] (FESA). The alert advised included residents to "go to shelter immediately". Localities elsewhere between [[Broome, Western Australia|Broome]] and [[Whim Creek, Western Australia|Whim Creek]] were on Yellow Alert, while a Blue Alert was issued between Whim Creek and Dampier, to the west of the Yellow Alert area.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth|title=Tropical Cyclone Advice Number 26|date=17 March 2012|publisher=Bureau of Meteorology|accessdate=22 November 2013|url=http://www.webcitation.org/66E0aWLNM}}</ref> Work at multiple oil fields and mining sites was suspended or slowed, with non-essential staff being removed at the sites remaining in operation.<ref name="pilbara"/> It was estimated that national oil production was reduced by about 25% during the storm's approach.<ref>{{cite news|author=Reuters|title=Northwest Australia takes measures to face cyclone|date=18 March 2012|newspaper=The Taipei Times|accessdate=23 November 2013|url=http://www.taipeitimes.com/News/world/archives/2012/03/18/2003528099}}</ref>
The BoM hoisted its first Cyclone Watch on 14 March for coastal areas between [[Mardie Station]] and [[Cape Leveque]].<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Advice Number 1 |date=14 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://dynasmon.fortunecity.com/Perth.html |url-status=dead |archive-url=https://web.archive.org/web/20090726132921/http://dynasmon.fortunecity.com/Perth.html |archive-date=26 July 2009 }}</ref> A Cyclone Warning was posted the next day for a smaller stretch of coastline within that range.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Advice Number 6 |date=15 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://dynasmon.fortunecity.com/Perth.html |url-status=dead |archive-url=https://web.archive.org/web/20090726132921/http://dynasmon.fortunecity.com/Perth.html |archive-date=26 July 2009 }}</ref> As Lua approached the coastline, the Cyclone Warning was in place from Cape Leveque to [[Dampier, Western Australia|Dampier]]. Communities between [[Bidyadanga Community, Western Australia|Bidyadanga]] and [[Port Hedland, Western Australia|Port Hedland]] were under a Red Alert, the highest level of caution issued by the [[Department of Fire and Emergency Services|Fire and Emergency Services Authority of Western Australia]] (FESA). The alert advised included residents to "go to shelter immediately". Localities elsewhere between [[Broome, Western Australia|Broome]] and [[Whim Creek, Western Australia|Whim Creek]] were on Yellow Alert, while a Blue Alert was issued between Whim Creek and Dampier, to the west of the Yellow Alert area.<ref>{{cite web|author=Tropical Cyclone Warning Center Perth |title=Tropical Cyclone Advice Number 26 |date=17 March 2012 |publisher=Bureau of Meteorology |access-date=22 November 2013 |url=http://dynasmon.fortunecity.com/Perth.html |url-status=dead |archive-url=https://web.archive.org/web/20090726132921/http://dynasmon.fortunecity.com/Perth.html |archive-date=26 July 2009 }}</ref> Work at multiple oil fields and mining sites was suspended or slowed, with non-essential staff being removed at the sites remaining in operation.<ref name="pilbara"/> It was estimated that national oil production was reduced by about 25% during the storm's approach.<ref>{{cite news|agency=Reuters|title=Northwest Australia takes measures to face cyclone|date=18 March 2012|newspaper=The Taipei Times|access-date=23 November 2013|url=http://www.taipeitimes.com/News/world/archives/2012/03/18/2003528099}}</ref>


Officials of the [[Port of Port Hedland]], an important [[iron ore]] exporting terminal, closed and evacuated the port by the morning of 16 March, operating under standard emergency preparedness procedure.<ref>{{cite news|author=Rania Spooner|date=16 March 2012|title=Pilbara miners brace for Cyclone Lua|publisher=''WA News''|accessdate=22 November 2013|url=http://www.watoday.com.au/business/pilbara-miners-brace-for-cyclone-lua-20120316-1v9fz.html}}</ref> Overall, nearly 40 ships in the port were relocated from the port out of the path of the storm.<ref name="wa"/> The [[Dampier,_Western_Australia#Port|Port of Dampier]] was also closed.<ref name="bloom"/> The Port of Port Hedland reopened to shipping on 18 March, about 52 hours after its closure, with little or no damage reported,<ref>{{cite news|author=Daisy Tseng|title=Iron ore shipping resumes as Port Hedland avoids big hit from cyclone|date=18 March 2012|newspaper=Metal Bulletin}}{{subscription required|via=LexisNexis}}</ref> though the downtime drove iron ore prices up for a time, and reduced exports of the raw material by 4.7% compared to the previous month. In total, Lua cost natural resources companies over $217 million (2012 [[Australian dollar|AUD]]; $230 million 2012 [[United States Dollar|USD]]) in stunted industry, accounting for nearly all of the monetary losses resulting from the storm.<ref>{{cite news|author=Rania Spooner and Peter Ker|title=Mining recovers after cyclone hit|date=20 March 2012|newspaper=The Melbourne Age}}{{subscription required|via=LexisNexis}}</ref><ref>{{cite news|author=Ginger Ding|title=Iron ore from Port Hedland to China drops in March|date=9 April 2012|newspaper=Metal Bulletin}}{{subscription required|via=LexisNexis}}</ref>
Officials of the [[Port of Port Hedland]], an important iron ore exporting terminal, closed and evacuated the port by the morning of 16 March, operating under standard emergency preparedness procedure.<ref>{{cite news|author=Rania Spooner|date=16 March 2012|title=Pilbara miners brace for Cyclone Lua|publisher=WA News|access-date=22 November 2013|url=http://www.watoday.com.au/business/pilbara-miners-brace-for-cyclone-lua-20120316-1v9fz.html}}</ref> Overall, nearly 40 ships in the port were relocated from the port out of the path of the storm.<ref name="wa"/> The [[Dampier, Western Australia#Port|Port of Dampier]] was also closed.<ref name="bloom"/> The Port of Port Hedland reopened to shipping on 18 March, about 52 hours after its closure, with little or no damage reported,<ref>{{cite news|author=Daisy Tseng|title=Iron ore shipping resumes as Port Hedland avoids big hit from cyclone|date=18 March 2012|newspaper=Metal Bulletin}}{{subscription required|work=LexisNexis}}</ref> though the downtime drove iron ore prices up for a time, and reduced exports of the raw material by 4.7% compared to the previous month. In total, Lua cost natural resources companies over $217&nbsp;million (2012 [[Australian dollar|AUD]]; $230&nbsp;million 2012 [[United States Dollar|USD]]) in stunted industry, accounting for nearly all of the monetary losses resulting from the storm.<ref>{{cite news|author=Rania Spooner and Peter Ker|title=Mining recovers after cyclone hit|date=20 March 2012|newspaper=The Melbourne Age}}{{subscription required|work=LexisNexis}}</ref><ref>{{cite news|author=Ginger Ding|title=Iron ore from Port Hedland to China drops in March|date=9 April 2012|newspaper=Metal Bulletin}}{{subscription required|work=LexisNexis}}</ref>


With the destruction wrought by [[Cyclone Laurence]] in 2009 still fresh in their minds, residents, business owners, and farmers worked hurriedly to prepare their properties and livestock for Lua's onslaught.<ref name="pilbara">{{cite news|title=Pilbara residents brace for cyclone Lua|date=16 March 2012|url=http://www.news.com.au/breaking-news/pilbara-residents-brace-for-cyclone-lua/story-e6frfku0-1226301760118|publisher=NewsComAu|access-date=22 November 2013|archive-date=17 March 2012|archive-url=https://web.archive.org/web/20120317090934/http://www.news.com.au/breaking-news/pilbara-residents-brace-for-cyclone-lua/story-e6frfku0-1226301760118|url-status=dead}}</ref> [[Horizon Power]] temporarily redirected power supply in the towns of [[Marble Bar, Western Australia|Marble Bar]] and [[Nullagine, Western Australia|Nullagine]] from [[solar power]] stations to diesel generator stations.<ref>{{cite web|author=Jennifer Fry|title=Tropical Cyclone Lua passes Marble Bar and Nullagine and continues towards the Mid-West|date=18 March 2012|publisher=[[Horizon Power]]|access-date=22 November 2013|url=http://www.horizonpower.com.au/news_tropical_cyclone_lua.html|archive-url=https://web.archive.org/web/20140213084543/http://horizonpower.com.au/news_tropical_cyclone_lua.html|archive-date=13 February 2014|url-status=dead}}</ref> Evacuation shelters were opened to refugees of the storm with no safe living arrangements starting 16 March.<ref name="wa">{{cite news|author=Rania Spooner|date=16 March 2012|title=Cyclone Lua gains strength as it nears WA coast|publisher=WA News|access-date=22 November 2013|url=http://www.watoday.com.au/wa-news/cyclone-lua-gains-strength-as-it-nears-wa-coast-20120316-1va9f.html}}</ref> About 110 individuals sought shelter at one such location in Nullagine.<ref>{{cite news|agency=Australian Associated Press|title=Pilbara on alert for Cyclone Lua|date=18 March 2012|newspaper=Sunshine Coast Sunday}}{{subscription required|work=LexisNexis}}</ref> As the storm moved inland, flood warnings were posted throughout the [[Kimberley (Western Australia)|Kimberley]] and the Pilbara,<ref name="pilbara"/> where officials closed public access to [[Karijini National Park]].<ref name="wa"/> The impending cyclone forced the closure of the [[Great Northern Highway|Great Northern]] and [[North West Coastal Highway|North West Coast]] highways,<ref name="bloom">{{cite news|author=Joe Schneider|title=Cyclone Lua Batters Western Australian Mining Region|date=17 March 2012|newspaper=Bloomberg Businessweek|access-date=22 November 2013|url=http://www.businessweek.com/news/2012-03-16/cyclone-lua-strengthens-heads-toward-australian-coast|archive-url=https://web.archive.org/web/20120317094706/http://www.businessweek.com/news/2012-03-16/cyclone-lua-strengthens-heads-toward-australian-coast|url-status=dead|archive-date=17 March 2012}}</ref> while flights to and from several airports were cancelled.<ref>{{cite news|title=The Pilbara braces as Cyclone Lua approaches|date=16 March 2012|publisher=[[Australian Broadcasting Corporation]]|access-date=22 November 2013|url=http://www.bom.gov.au/announcements/sevwx/wa/watc20120309.shtml}}</ref>
[[File:Cyclone Lua microwave March 17 2012.jpg|left|thumb|320px|Microwave-enhanced satellite image of Lua at 0000 UTC on 17 March, at peak intensity; a well-defined center is visible]]
With the destruction wrought by [[Cyclone Laurence]] in 2009 still fresh in their minds, residents, business owners, and farmers worked hurriedly to prepare their properties and livestock for Lua's onslaught.<ref name="pilbara">{{cite news|title=Pilbara residents brace for cyclone Lua|date=16 March 2012|url=http://www.news.com.au/breaking-news/pilbara-residents-brace-for-cyclone-lua/story-e6frfku0-1226301760118|publisher=''NewsComAu''|accessdate=22 November 2013}}</ref> [[Horizon Power]] temporarily redirected power supply in the towns of [[Marble Bar, Western Australia|Marble Bar]] and [[Nullagine, Western Australia|Nullagine]] from [[solar power]] stations to diesel generator stations.<ref>{{cite web|author=Jennifer Fry|title=Tropical Cyclone Lua passes Marble Bar and Nullagine and continues towards the Mid-West|date=18 March 2012|publisher=[[Horizon Power]]|accessdate=22 November 2013|url=http://www.horizonpower.com.au/news_tropical_cyclone_lua.html}}</ref> Evacuation shelters were opened to refugees of the storm with no safe living arrangements starting 16 March.<ref name="wa">{{cite news|author=Rania Spooner|date=16 March 2012|title=Cyclone Lua gains strength as it nears WA coast|publisher=''WA News''|accessdate=22 November 2013|url=http://www.watoday.com.au/wa-news/cyclone-lua-gains-strength-as-it-nears-wa-coast-20120316-1va9f.html}}</ref> About 110 individuals sought shelter at one such location in Nullagine.<ref>{{cite news|author=Australian Associated Press|title=Pilbara on alert for Cyclone Lua|date=18 March 2012|newspaper=Sunshine Coast Sunday}}{{subscription required|via=LexisNexis}}</ref> As the storm moved inland, flood warnings were posted throughout the [[Kimberley (Western Australia)|Kimberley]] and the Pilbara,<ref name="pilbara"/> where officials closed public access to [[Karijini National Park]].<ref name="wa"/> The impending cyclone forced the closure of the [[Great Northern Highway|Great Northern]] and [[North West Coastal Highway|North West Coast]] highways,<ref name="bloom">{{cite news|author=Joe Schneider|title=Cyclone Lua Batters Western Australian Mining Region|date=17 March 2012|newspaper=Bloomberg Businessweek|accessdate=22 November 2013|url=http://www.businessweek.com/news/2012-03-16/cyclone-lua-strengthens-heads-toward-australian-coast}}</ref> while flights to and from several airports were cancelled.<ref>{{cite news|title=The Pilbara braces as Cyclone Lua approaches|date=16 March 2012|newspaper=[[Australian Broadcasting Corporation]]|accessdate=22 November 2013|url=http://www.bom.gov.au/announcements/sevwx/wa/watc20120309.shtml}}</ref>


==Meteorological effects and aftermath==
==Meteorological effects and aftermath==
[[File:Cyclone Lua microwave March 17 2012.jpg|left|thumb|300px|Microwave-enhanced satellite image of Lua at 0000 UTC on 17 March, at peak intensity; a well-defined centre is visible]]
On coming ashore, Cyclona Lua produced strong winds, gusting to {{convert|150|km/h|mph|abbr=on}} at Port Hedland,<ref name="ln">{{cite news|author=Cortlan Bennett|title=WA:Little damage from scary Cyclone Lua|date=18 March 2012|newspaper=Australian Associated Press}}{{subscription required|via=LexisNexis}}</ref> and appreciable rainfall, peaking at {{convert|88.6|mm|in|abbr=on}} at Bidyadanga.<ref name="bomreport"/> The precipitation was widespread, affecting a large area of interior Western Australia. The overcast weather led to abnormally cool temperatures, which broke monthly records in portions of the central and eastern Pilbara. For instance, the [[Port Hedland Airport]] recorded a maximum temperature of 24.1&deg;C on 17 March, the coldest March day in the station's history; the previous record of 25.8&deg;C was set 64 years prior. As the remnants of Lua continued poleward, they continued to drop heavy rainfall, including a daily total (19 March) of {{convert|75.0|mm|in|abbr=on}} at Edjudina, setting the record for the wettest March day there.<ref name="mwr"/> A barometer reading of {{convert|939|hPa|inHg|abbr=on}} at [[Rowley Shoals]] represented the lowest observed pressure associated with the storm.<ref name="bomreport"/>
On coming ashore, Cyclona Lua produced strong winds, gusting to {{convert|150|km/h|mph|abbr=on}} at Port Hedland,<ref name="ln">{{cite news|author=Cortlan Bennett|title=WA:Little damage from scary Cyclone Lua|date=18 March 2012|agency=Australian Associated Press}}{{subscription required|work=LexisNexis}}</ref> and appreciable rainfall, peaking at {{convert|88.6|mm|in|abbr=on}} at Bidyadanga.<ref name="bomreport"/> The precipitation was widespread, affecting a large area of interior Western Australia. The overcast weather led to abnormally cool temperatures, which broke monthly records in portions of the central and eastern Pilbara. For instance, the [[Port Hedland Airport]] recorded a maximum temperature of 24.1&nbsp;°C on 17 March, the coldest March day in the station's history; the previous record of 25.8&nbsp;°C was set 64 years prior. As the remnants of Lua continued poleward, they continued to drop heavy rainfall, including a daily total (19 March) of {{convert|75.0|mm|in|abbr=on}} at [[Edjudina]], setting the record for the wettest March day there.<ref name="mwr"/> A barometer reading of {{convert|939|hPa|inHg|abbr=on}} at [[Rowley Shoals]] represented the lowest observed pressure associated with the storm.<ref name="bomreport"/>


Striking a relatively isolated area, the cyclone's effects were limited, and no fatalities or injuries were reported. Indeed, a FESA official noted that initial reports of damage were "scant".<ref>{{cite news|title=Cyclone hammers small WA community|date=18 March 2012|newspaper=Australian Broadcasting Corporation}}{{subscription required|via=LexisNexis}}</ref> Preliminary assessments suggested that [[List of roadhouses in Western Australia|Pardoo Roadhouse]] and the small surrounding community bore the brunt of the storm, as most towns and farms in the region escaped relatively unscathed.<ref>{{cite news|title=Clean up begins after cyclone Lua hits|date=19 March 2012|newspaper=Australian Broadcasting Corporation}}{{subscription required|via=LexisNexis}}</ref> The manager of the roadhouse relayed that the height of the storm was "absolutely horrific", downing numerous trees and causing some structural damage.<ref name="ln"/> Some destruction was also observed at the [[List_of_homesteads_in_Western_Australia:_X-Z|Yarrie Homestead]],<ref name="bomreport"/> where return to normalcy was expected to take as long as 12 months.<ref name="ln"/> Numerous buildings on the [[List of homesteads in Western Australia: Wa-We|Warrawagine Homestead]] sustained damage such as compromised roofs and doors, which amounted to an estimated $70,000 (2012 AUD; 74,000 2012 USD<ref>{{cite web|title=USD (US Dollars) to AUD (Australian Dollars) exchange rate for March 17, 2012|publisher=Exchange-rates.org|accessdate=24 November 2013|url=http://www.exchange-rates.org/Rate/USD/AUD/3-17-2012}}</ref>). Several head of cattle were killed by the storm.<ref name="fury">{{cite news|title=Cyclone Lua's fury also brings welcome rains|date=22 March 2012|publisher=The Western Australia Countryman}}{{subscription required|via=LexisNexis}}</ref> Moderate to major flooding took place in several areas, especially along the [[De Grey River]] drainage basin,<ref>{{cite news|author=Yasmine Phillips|title=Lua Lashes Coast|date=18 March 2012|newspaper=The Sunday Times}}{{subscription required|via=LexisNexis}}</ref> though the rainfall proved beneficial in much of the climatologically dry area.<ref name="fury"/> The above-normal precipitation allowed farmers to get a head-start on planting winter crops.<ref>{{cite news|title=Seeding begins in WA|date=3 April 2012|newspaper=Australian Broadcasting Corporation}}{{subscription required|via=LexisNexis}}</ref>
Striking a relatively isolated area, the cyclone's effects were limited, and no fatalities or injuries were reported. Indeed, a FESA official noted that initial reports of damage were "scant".<ref>{{cite news|title=Cyclone hammers small WA community|date=18 March 2012|publisher=Australian Broadcasting Corporation}}{{subscription required|work=LexisNexis}}</ref> Preliminary assessments suggested that [[List of roadhouses in Western Australia|Pardoo Roadhouse]] and the small surrounding community bore the brunt of the storm, as most towns and farms in the region escaped relatively unscathed.<ref>{{cite news|title=Clean up begins after cyclone Lua hits|date=19 March 2012|publisher=Australian Broadcasting Corporation}}{{subscription required|work=LexisNexis}}</ref> The manager of the roadhouse relayed that the height of the storm was "absolutely horrific", downing numerous trees and causing some structural damage.<ref name="ln"/> Some destruction was also observed at the [[List of homesteads in Western Australia: X-Z|Yarrie Homestead]],<ref name="bomreport"/> where return to normalcy was expected to take as long as 12 months.<ref name="ln"/> Numerous buildings on the [[List of homesteads in Western Australia: Wa-We|Warrawagine Homestead]] sustained damage such as compromised roofs and doors, which amounted to an estimated $70,000 (2012 AUD; 74,000 2012 USD<ref>{{cite web|title=USD (US Dollars) to AUD (Australian Dollars) exchange rate for March 17, 2012|publisher=Exchange-rates.org|access-date=24 November 2013|url=http://www.exchange-rates.org/Rate/USD/AUD/3-17-2012}}</ref>). Several head of cattle were killed by the storm.<ref name="fury">{{cite news|title=Cyclone Lua's fury also brings welcome rains|date=22 March 2012|publisher=The Western Australia Countryman}}{{subscription required|work=LexisNexis}}</ref> Moderate to major flooding took place in several areas, especially along the [[De Grey River]] drainage basin,<ref>{{cite news|author=Yasmine Phillips|title=Lua Lashes Coast|date=18 March 2012|newspaper=The Sunday Times}}{{subscription required|work=LexisNexis}}</ref> though the rainfall proved beneficial in much of the climatologically dry area.<ref name="fury"/> The above-normal precipitation allowed farmers to get a head-start on planting winter crops.<ref>{{cite news|title=Seeding begins in WA|date=3 April 2012|publisher=Australian Broadcasting Corporation}}{{subscription required|work=LexisNexis}}</ref>


In the aftermath of the storm, the Western Australia state government allocated relief funds to offset the cost of recovery and cleanup in several of the affected towns. Individuals and families became eligible to apply for personal grants and small business owners would be considered for special interest rates on new loans.<ref>{{cite news|author=[[Attorney-General for Australia]], Nicola Roxon|title=Tropical Cyclone Lua- Affected Western Australia Communities To Receive Disaster Assistance Under Natural Disaster Relief and Recovery Arrangements|date=24 March 2012|newspaper=Australian Government News}}{{subscription required|via=LexisNexis}}</ref> Local government entities listed under the proclamation were the [[shire]]s of [[Ashburton, Western Australia|Ashburton]], [[Broome, Western Australia|Broome]], [[East Pilbara, Western Australia|East Pilbara]], [[Meekatharra, Western Australia|Meekatharra]], and the Town of Port Hedland. Disaster assistance money in these jurisdictions would be used to restore public assets and infrastructure impaired by the storm.<ref>{{cite web|author=Department of Fire and Emergency Services|title=2011/12 Wandrra Eligible Disaster Proclamation Notification: Tropical Cyclone Lua and Associated Flooding (17 March 2012)|publisher=Government of Western Australia|accessdate=24 November 2013|url=http://www.dfes.wa.gov.au/stateemergencymanagement/grantsandrecovery/wandrra/ActivatedEvents/WANDRRA%20_Web_%20Notification%20for%20TC%20Lua%20%20Assoc%20Flooding%20_17%20March%202012.pdf}}</ref> The name ''Lua'' was later [[List of retired Australian cyclone names|retired]] from the cyclical list of tropical cyclone names due to the system's adverse effects on land.<ref>{{cite web|publisher=World Meteorological Organization|year=2012|accessdate=24 November 2013|title=Tropical Cyclone Operation Plan for the South Pacific and South-East Indian Ocean|url=http://www.wmo.int/pages/prog/www/tcp/documents/TCP24_RAVOpPlan_2012.pdf|format=PDF}}</ref>
In the aftermath of the storm, the Western Australia state government allocated relief funds to offset the cost of recovery and clean-up in several of the affected towns. Individuals and families became eligible to apply for personal grants and small business owners would be considered for special interest rates on new loans.<ref>{{cite news|author=[[Attorney-General for Australia]], Nicola Roxon|title=Tropical Cyclone Lua- Affected Western Australia Communities To Receive Disaster Assistance Under Natural Disaster Relief and Recovery Arrangements|date=24 March 2012|newspaper=Australian Government News}}{{subscription required|work=LexisNexis}}</ref> Local government entities listed under the proclamation were the [[shire]]s of [[Ashburton, Western Australia|Ashburton]], [[Broome, Western Australia|Broome]], [[Shire of East Pilbara|East Pilbara]], [[Meekatharra, Western Australia|Meekatharra]], and the Town of Port Hedland. Disaster assistance money in these jurisdictions would be used to restore public assets and infrastructure impaired by the storm.<ref>{{cite web|author=Department of Fire and Emergency Services|title=2011/12 Wandrra Eligible Disaster Proclamation Notification: Tropical Cyclone Lua and Associated Flooding (17 March 2012)|publisher=Government of Western Australia|access-date=24 November 2013|url=http://www.dfes.wa.gov.au/stateemergencymanagement/grantsandrecovery/wandrra/ActivatedEvents/WANDRRA%20_Web_%20Notification%20for%20TC%20Lua%20%20Assoc%20Flooding%20_17%20March%202012.pdf|archive-url=https://web.archive.org/web/20130424124552/http://www.dfes.wa.gov.au/stateemergencymanagement/grantsandrecovery/wandrra/ActivatedEvents/WANDRRA%20_Web_%20Notification%20for%20TC%20Lua%20%20Assoc%20Flooding%20_17%20March%202012.pdf|archive-date=24 April 2013|url-status=dead}}</ref> The name ''Lua'' was later [[List of retired Australian cyclone names|retired]] from the cyclical list of tropical cyclone names due to the system's adverse effects on land and was replaced by the name ''Luana''.<ref>{{cite web|publisher=World Meteorological Organization|year=2012|access-date=24 November 2013|title=Tropical Cyclone Operation Plan for the South Pacific and South-East Indian Ocean|url=http://www.wmo.int/pages/prog/www/tcp/documents/TCP24_RAVOpPlan_2012.pdf|format=PDF}}</ref>


==See also==
==See also==
Line 52: Line 60:
*[[Cyclone Yasi]], which struck [[Queensland]] in early 2011
*[[Cyclone Yasi]], which struck [[Queensland]] in early 2011
*[[Cyclone Laurence]], which struck [[Western Australia]] in late 2009
*[[Cyclone Laurence]], which struck [[Western Australia]] in late 2009
*Cyclones [[Cyclone Rusty|Rusty]] (2013), [[Cyclone Kelvin|Kelvin]] (2018) and [[Cyclone Ilsa|Ilsa]] (2023), which all made landfall in the same region between Port Hedland and Broome as severe tropical cyclones after Lua
*Cyclones [[Cyclone Gwenda|Gwenda]] (1999) and [[Cyclone Inigo|Inigo]] (2003), tied for the strongest Australian region tropical cyclones on record; both would strike Western Australia after peaking in strength.
*Cyclones [[Cyclone Gwenda|Gwenda]] (1999) and [[Cyclone Inigo|Inigo]] (2003), tied for the strongest Australian region tropical cyclones on record; both would strike Western Australia after peaking in strength.


Line 58: Line 67:


==External links==
==External links==
{{Commons category}}
* [http://www.usno.navy.mil/JTWC Joint Typhoon Warning Center (JTWC)]
* [http://www.usno.navy.mil/JTWC Joint Typhoon Warning Center (JTWC)] {{Webarchive|url=https://web.archive.org/web/20100301105349/http://www.usno.navy.mil/JTWC |date=1 March 2010 }}
* [http://www.bom.gov.au/weather/cyclone/ Australian Bureau of Meteorology (TCWCs Perth, Darwin & Brisbane)]
* [http://www.bom.gov.au/weather/cyclone/ Australian Bureau of Meteorology (TCWCs Perth, Darwin & Brisbane)] {{Webarchive|url=https://web.archive.org/web/20091112010420/http://www.bom.gov.au/weather/cyclone/ |date=12 November 2009 }}
* [[YouTube]] footage of Lua's passage:
* YouTube footage of Lua's passage:
** [http://www.youtube.com/watch?v=e0c3tyAavvI Pardoo Station, 16 seconds]
** [http://www.youtube.com/watch?v=lfeQ08tQwLQ Pardoo Station, 13 seconds]
** [https://www.youtube.com/watch?v=e0c3tyAavvI Pardoo Station, 16 seconds]
** [https://www.youtube.com/watch?v=lfeQ08tQwLQ Pardoo Station, 13 seconds]
* [http://www.3news.co.nz/Cyclone-Lua-causes-heartbreaking-damage/tabid/417/articleID/247181/Default.aspx#.UpJtb-JsbNA Video report] from ''[[3 News]]''
* [https://archive.today/20131124225626/http://www.3news.co.nz/Cyclone-Lua-causes-heartbreaking-damage/tabid/417/articleID/247181/Default.aspx%23.UpJtb-JsbNA Video report] from ''[[3 News]]''


{{2011–12 Australian region cyclone season buttons}}
{{2011–12 Australian region cyclone season buttons}}
{{Retired Australian cyclones}}
{{Retired Australian cyclones}}
{{Category 3 Australian region tropical cyclones}}


{{DEFAULTSORT:Lua 2012}}
{{DEFAULTSORT:Lua 2012}}
[[Category:Category 3 Australian region cyclones]]
[[Category:Category 3 Australian region cyclones]]
[[Category:2012 in Australia]]
[[Category:2012 in Australia]]
[[Category:Cyclones in Australia]]
[[Category:Tropical cyclones in Western Australia]]
[[Category:2011–12 Australian region cyclone season]]
[[Category:2011–12 Australian region cyclone season]]
[[Category:Retired Australian region cyclones]]
[[Category:Tropical cyclones in 2012|Lua]]
[[Category:2010s in Western Australia]]

Latest revision as of 00:39, 28 May 2024

Severe Tropical Cyclone Lua
Cyclone Lua near landfall on 17 March
Meteorological history
Formed12 March 2012
Dissipated18 March 2012
Category 3 severe tropical cyclone
10-minute sustained (BOM)
Highest winds155 km/h (100 mph)
Highest gusts220 km/h (140 mph)
Lowest pressure935 hPa (mbar); 27.61 inHg
Category 2-equivalent tropical cyclone
1-minute sustained (SSHWS/JTWC)
Highest winds175 km/h (110 mph)
Lowest pressure952 hPa (mbar); 28.11 inHg
Overall effects
FatalitiesNone
Damage>$230 million (2012 USD)
Areas affectedWestern Australia
IBTrACSEdit this at Wikidata

Part of the 2011–12 Australian region cyclone season

Severe Tropical Cyclone Lua affected a sparsely populated region of Western Australia during mid-March 2012. Originating in a broad low pressure area that formed northwest of Australia by 8 March, the storm was plagued by inhibiting wind shear for the duration of its formative stages. However, it gradually organised, and received the name Lua on 13 March. The cyclone meandered for the first several days of its existence, caught between weak and competing steering currents. After the cyclone drifted northwestward, a building ridge of high pressure to the north drove Lua southeastward toward the Pilbara region. Ultimately intensifying into an upper-end Category 3 severe tropical cyclone with maximum sustained 10-minute winds of 155 km/h (96 mph), Lua made landfall near the remote community of Pardoo, about 150 km (93 mi) east of Port Hedland. It steadily weakened as it progressed south over interior Western Australia, diminishing below tropical cyclone status on 18 March.

The threat of the impending cyclone halted local industries such as oil production and iron ore mining and exporting. The Port of Port Hedland, a highly important iron ore shipping terminal, was forced to close for about 52 hours, contributing to inflated iron ore prices and delayed shipments. Multiple companies suspended work at oil fields and mines throughout the region, cutting national oil production by 25% and iron ore exports by 4.7% versus the previous month. Overall, Lua is attributed to $217 million (2012 AUD; $230 million 2012 USD) in lost revenue. Lua produced strong winds and widespread rainfall on land, but damage was limited by the lack of population in the storm's path. The Pardoo Roadhouse bore the brunt of the storm, and damage was reported at several other cattle stations and homesteads; at these sites, the storm damaged the exteriors of various structures and brought down swaths of trees. Central Western Australia endured several days of record-breaking rainfall and cool weather. The Government of Western Australia provided disaster relief funds to the hardest-hit areas, and Lua was later retired from the list of tropical cyclone names.

Meteorological history

[edit]
Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Cyclone Lua originated in a broad area of disturbed weather that was spawned by a deep trough of low pressure and enhanced by a Madden–Julian oscillation pulse.[1] The precursor to Lua was first identified through satellite imagery by 8 March 2012, while situated about 1,100 km (680 mi) to the north-northwest of Learmonth.[2] Analysis of the disturbance revealed a diffuse low-level centre of circulation loosely bounded by sporadic, but multiplying, convection.[2] On 9 March, the Bureau of Meteorology's (BoM) Tropical Cyclone Warning Center (TCWC) in Perth recognised the developing system and remarked on the potential for tropical cyclone formation over the following several days.[3] The low pressure area meandered for several days, making some progress toward the east, and gradually consolidated.[4]

By 12 March, the system had developed persistent deep convection over the eastern half of its core and organised banding features elsewhere. Moderate vertical wind shear initially hampered intensification,[5] though the BoM designated the system Tropical Low 16U; at the time, it was centred roughly 230 km (140 mi) northwest of Karratha, Western Australia.[6] At 2300 UTC on 12 March, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert.[7] With increasingly favourable environmental conditions—including warm ocean waters and dwindling wind shear—the low organised significantly between 12 and 13 March, and at 0600 UTC on the 13th, TCWC Perth upgraded the low to Tropical Cyclone Lua.[8] Simultaneously, the JTWC issued its first tropical cyclone warning on 17S.[9] Contrary to real-time operations, the official BoM "best track" database does not list the storm as having attained Category 1 tropical cyclone intensity until 0000 UTC on 14 March.[4]

At the time of its designation, Lua was nearly stationary in terms of forward movement, caught in the equilibrium between a blocking ridge to the southwest and increasing monsoonal winds from the northwest.[8] The ridge began to drive Lua north-northwestward at up to 20 km/h (12 mph),[10] before the storm resumed its slow pace on 14 March.[11] The storm remained relatively disorganised, its strengthening limited by moderate wind shear and dry air entering its centre. Consequently, a large void of thunderstorm activity created a "horseshoe pattern".[12] Nonetheless, Lua proved resilient, and good outflow helped compensate for the adverse shear.[13] The southwesterly steering currents weakened, causing the storm to begin its anticipated curve toward the east and east-southeast.[14] According to the JTWC, the storm completed a small loop as a result of competing steering factors. At the same time, the upper levels of the atmosphere became far more conducive to the cyclone's intensification, and the storm's banding pattern tightened.[15] With a building ridge to its north, Lua accelerated east-southeastward on 15 March,[16] and with wind shear oscillating but generally decreasing, the storm became a Category 3 severe tropical cyclone at 1800 UTC.[4]

Continuing to intensify, Lua began to exhibit an ill-defined eye on visible satellite imagery on 16 March. The storm was expansive, producing storm-force winds in a circular area 850 km (530 mi) across.[17] Still, the deepest convection and most favourable outflow was focused away from the eastern semicircle due to persistent light easterly wind shear.[18] The storm's structure improved throughout the day and into the night,[19] and at 1800 UTC on 16 March, the storm attained its peak 10-minute maximum sustained winds of 155 km/h (96 mph), classifying it as an upper-end Category 3 severe tropical cyclone.[20] Early on 17 March, the storm turned due south toward the Pilbara coast, and the JTWC reported that Lua's peak strength was marked by 1-minute sustained winds of 175 km/h (109 mph), at 0600 UTC.[21] At its deepest, the storm possessed a central barometric pressure of 935 hPa (27.6 inHg). Lua made landfall near Pardoo, about 150 km (93 mi) east-northeast of Port Hedland, at 0700 UTC while still at peak intensity.[1] The cyclone steadily weakened as it progressed southward,[22] tracking directly over the Yarrie mine before passing about halfway between Newman and Jigalong.[1] With little extant convection and a shallow, exposed centre, Lua deteriorated below tropical cyclone status early on 18 March near Wiluna. The cyclone's remnants later entered the Goldfields-Esperance region.[11]

Preparations and economic impact

[edit]
Tropical Low 16U meandering off the Australian coast on 13 March

The BoM hoisted its first Cyclone Watch on 14 March for coastal areas between Mardie Station and Cape Leveque.[23] A Cyclone Warning was posted the next day for a smaller stretch of coastline within that range.[24] As Lua approached the coastline, the Cyclone Warning was in place from Cape Leveque to Dampier. Communities between Bidyadanga and Port Hedland were under a Red Alert, the highest level of caution issued by the Fire and Emergency Services Authority of Western Australia (FESA). The alert advised included residents to "go to shelter immediately". Localities elsewhere between Broome and Whim Creek were on Yellow Alert, while a Blue Alert was issued between Whim Creek and Dampier, to the west of the Yellow Alert area.[25] Work at multiple oil fields and mining sites was suspended or slowed, with non-essential staff being removed at the sites remaining in operation.[26] It was estimated that national oil production was reduced by about 25% during the storm's approach.[27]

Officials of the Port of Port Hedland, an important iron ore exporting terminal, closed and evacuated the port by the morning of 16 March, operating under standard emergency preparedness procedure.[28] Overall, nearly 40 ships in the port were relocated from the port out of the path of the storm.[29] The Port of Dampier was also closed.[30] The Port of Port Hedland reopened to shipping on 18 March, about 52 hours after its closure, with little or no damage reported,[31] though the downtime drove iron ore prices up for a time, and reduced exports of the raw material by 4.7% compared to the previous month. In total, Lua cost natural resources companies over $217 million (2012 AUD; $230 million 2012 USD) in stunted industry, accounting for nearly all of the monetary losses resulting from the storm.[32][33]

With the destruction wrought by Cyclone Laurence in 2009 still fresh in their minds, residents, business owners, and farmers worked hurriedly to prepare their properties and livestock for Lua's onslaught.[26] Horizon Power temporarily redirected power supply in the towns of Marble Bar and Nullagine from solar power stations to diesel generator stations.[34] Evacuation shelters were opened to refugees of the storm with no safe living arrangements starting 16 March.[29] About 110 individuals sought shelter at one such location in Nullagine.[35] As the storm moved inland, flood warnings were posted throughout the Kimberley and the Pilbara,[26] where officials closed public access to Karijini National Park.[29] The impending cyclone forced the closure of the Great Northern and North West Coast highways,[30] while flights to and from several airports were cancelled.[36]

Meteorological effects and aftermath

[edit]
Microwave-enhanced satellite image of Lua at 0000 UTC on 17 March, at peak intensity; a well-defined centre is visible

On coming ashore, Cyclona Lua produced strong winds, gusting to 150 km/h (93 mph) at Port Hedland,[37] and appreciable rainfall, peaking at 88.6 mm (3.49 in) at Bidyadanga.[1] The precipitation was widespread, affecting a large area of interior Western Australia. The overcast weather led to abnormally cool temperatures, which broke monthly records in portions of the central and eastern Pilbara. For instance, the Port Hedland Airport recorded a maximum temperature of 24.1 °C on 17 March, the coldest March day in the station's history; the previous record of 25.8 °C was set 64 years prior. As the remnants of Lua continued poleward, they continued to drop heavy rainfall, including a daily total (19 March) of 75.0 mm (2.95 in) at Edjudina, setting the record for the wettest March day there.[11] A barometer reading of 939 hPa (27.7 inHg) at Rowley Shoals represented the lowest observed pressure associated with the storm.[1]

Striking a relatively isolated area, the cyclone's effects were limited, and no fatalities or injuries were reported. Indeed, a FESA official noted that initial reports of damage were "scant".[38] Preliminary assessments suggested that Pardoo Roadhouse and the small surrounding community bore the brunt of the storm, as most towns and farms in the region escaped relatively unscathed.[39] The manager of the roadhouse relayed that the height of the storm was "absolutely horrific", downing numerous trees and causing some structural damage.[37] Some destruction was also observed at the Yarrie Homestead,[1] where return to normalcy was expected to take as long as 12 months.[37] Numerous buildings on the Warrawagine Homestead sustained damage such as compromised roofs and doors, which amounted to an estimated $70,000 (2012 AUD; 74,000 2012 USD[40]). Several head of cattle were killed by the storm.[41] Moderate to major flooding took place in several areas, especially along the De Grey River drainage basin,[42] though the rainfall proved beneficial in much of the climatologically dry area.[41] The above-normal precipitation allowed farmers to get a head-start on planting winter crops.[43]

In the aftermath of the storm, the Western Australia state government allocated relief funds to offset the cost of recovery and clean-up in several of the affected towns. Individuals and families became eligible to apply for personal grants and small business owners would be considered for special interest rates on new loans.[44] Local government entities listed under the proclamation were the shires of Ashburton, Broome, East Pilbara, Meekatharra, and the Town of Port Hedland. Disaster assistance money in these jurisdictions would be used to restore public assets and infrastructure impaired by the storm.[45] The name Lua was later retired from the cyclical list of tropical cyclone names due to the system's adverse effects on land and was replaced by the name Luana.[46]

See also

[edit]
  • Cyclone Yasi, which struck Queensland in early 2011
  • Cyclone Laurence, which struck Western Australia in late 2009
  • Cyclones Rusty (2013), Kelvin (2018) and Ilsa (2023), which all made landfall in the same region between Port Hedland and Broome as severe tropical cyclones after Lua
  • Cyclones Gwenda (1999) and Inigo (2003), tied for the strongest Australian region tropical cyclones on record; both would strike Western Australia after peaking in strength.

References

[edit]
  1. ^ a b c d e f "Severe Tropical Cyclone Lua". Bureau of Meteorology. Retrieved 22 November 2013.
  2. ^ a b "Significant Tropical Weather Advisory for the Indian Ocean, 8 March 2012 1951z". Joint Typhoon Warning Center. 8 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  3. ^ Tropical Cyclone Warning Center Perth (9 March 2012). "Tropical Cyclone three-day outlook for the Western Region, 12:47 pm WST on Friday the 9th of March 2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  4. ^ a b c International Best Track Archive for Climate Stewardship. "2012 LUA (2012069S14111)". University of North Carolina, Asheville. Archived from the original on 5 March 2016. Retrieved 22 November 2013.
  5. ^ "Significant Tropical Weather Advisory for the Indian Ocean, 12 March 2012 0752z". Joint Typhoon Warning Center. 12 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  6. ^ Tropical Cyclone Warning Center Perth (12 March 2012). "Tropical Cyclone three-day outlook for the Western Region, 12:27 pm WST on Friday the 12th of March 2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  7. ^ "Tropical Cyclone Formation Alert, 12 March 2012 2300z". Joint Typhoon Warning Center. 12 March 2012. Archived from the original on 21 October 2011. Retrieved 22 November 2012.
  8. ^ a b Tropical Cyclone Warning Center Perth. "Tropical Cyclone Technical Bulletin, 0704z 13/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  9. ^ "Tropical Cyclone 17S (Lua) Warning Number 1". Joint Typhoon Warning Center. 13 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  10. ^ Tropical Cyclone Warning Center Perth. "Tropical Cyclone Technical Bulletin, 0145z 14/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  11. ^ a b c Western Australia Climate Services Centre (24 May 2012). "March 2012 Western Australia Monthly Weather Review" (PDF). Bureau of Meteorology. Retrieved 22 November 2013.
  12. ^ "Tropical Cyclone 17S (Lua) Warning Number 5". Joint Typhoon Warning Center. 14 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  13. ^ "Tropical Cyclone 17S (Lua) Warning Number 6". Joint Typhoon Warning Center. 14 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  14. ^ Tropical Cyclone Warning Center Perth (15 March 2012). "Tropical Cyclone Technical Bulletin, 0104z 15/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  15. ^ "Tropical Cyclone 17S (Lua) Warning Number 7". Joint Typhoon Warning Center. 14 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  16. ^ "Tropical Cyclone 17S (Lua) Warning Number 8". Joint Typhoon Warning Center. 15 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  17. ^ Tropical Cyclone Warning Center Perth (16 March 2012). "Tropical Cyclone Technical Bulletin, 0701z 16/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  18. ^ "Tropical Cyclone 17S (Lua) Warning Number 9". Joint Typhoon Warning Center. 16 March 2012. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  19. ^ Tropical Cyclone Warning Center Perth (16 March 2012). "Tropical Cyclone Technical Bulletin, 1853z 16/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  20. ^ Meteorology, corporateName=Bureau of. "Tropical Cyclones". bom.gov.au. Retrieved 9 August 2017.
  21. ^ "17S.Lua Best Track" (txt). Joint Typhoon Warning Center. Retrieved 22 November 2013.
  22. ^ Tropical Cyclone Warning Center Perth (17 March 2012). "Tropical Cyclone Technical Bulletin, 2109z 17/03/2012". Bureau of Meteorology. Archived from the original on 22 May 2024. Retrieved 22 November 2013.
  23. ^ Tropical Cyclone Warning Center Perth (14 March 2012). "Tropical Cyclone Advice Number 1". Bureau of Meteorology. Archived from the original on 26 July 2009. Retrieved 22 November 2013.
  24. ^ Tropical Cyclone Warning Center Perth (15 March 2012). "Tropical Cyclone Advice Number 6". Bureau of Meteorology. Archived from the original on 26 July 2009. Retrieved 22 November 2013.
  25. ^ Tropical Cyclone Warning Center Perth (17 March 2012). "Tropical Cyclone Advice Number 26". Bureau of Meteorology. Archived from the original on 26 July 2009. Retrieved 22 November 2013.
  26. ^ a b c "Pilbara residents brace for cyclone Lua". NewsComAu. 16 March 2012. Archived from the original on 17 March 2012. Retrieved 22 November 2013.
  27. ^ "Northwest Australia takes measures to face cyclone". The Taipei Times. Reuters. 18 March 2012. Retrieved 23 November 2013.
  28. ^ Rania Spooner (16 March 2012). "Pilbara miners brace for Cyclone Lua". WA News. Retrieved 22 November 2013.
  29. ^ a b c Rania Spooner (16 March 2012). "Cyclone Lua gains strength as it nears WA coast". WA News. Retrieved 22 November 2013.
  30. ^ a b Joe Schneider (17 March 2012). "Cyclone Lua Batters Western Australian Mining Region". Bloomberg Businessweek. Archived from the original on 17 March 2012. Retrieved 22 November 2013.
  31. ^ Daisy Tseng (18 March 2012). "Iron ore shipping resumes as Port Hedland avoids big hit from cyclone". Metal Bulletin.(subscription required)
  32. ^ Rania Spooner and Peter Ker (20 March 2012). "Mining recovers after cyclone hit". The Melbourne Age.(subscription required)
  33. ^ Ginger Ding (9 April 2012). "Iron ore from Port Hedland to China drops in March". Metal Bulletin.(subscription required)
  34. ^ Jennifer Fry (18 March 2012). "Tropical Cyclone Lua passes Marble Bar and Nullagine and continues towards the Mid-West". Horizon Power. Archived from the original on 13 February 2014. Retrieved 22 November 2013.
  35. ^ "Pilbara on alert for Cyclone Lua". Sunshine Coast Sunday. Australian Associated Press. 18 March 2012.(subscription required)
  36. ^ "The Pilbara braces as Cyclone Lua approaches". Australian Broadcasting Corporation. 16 March 2012. Retrieved 22 November 2013.
  37. ^ a b c Cortlan Bennett (18 March 2012). "WA:Little damage from scary Cyclone Lua". Australian Associated Press.(subscription required)
  38. ^ "Cyclone hammers small WA community". Australian Broadcasting Corporation. 18 March 2012.(subscription required)
  39. ^ "Clean up begins after cyclone Lua hits". Australian Broadcasting Corporation. 19 March 2012.(subscription required)
  40. ^ "USD (US Dollars) to AUD (Australian Dollars) exchange rate for March 17, 2012". Exchange-rates.org. Retrieved 24 November 2013.
  41. ^ a b "Cyclone Lua's fury also brings welcome rains". The Western Australia Countryman. 22 March 2012.(subscription required)
  42. ^ Yasmine Phillips (18 March 2012). "Lua Lashes Coast". The Sunday Times.(subscription required)
  43. ^ "Seeding begins in WA". Australian Broadcasting Corporation. 3 April 2012.(subscription required)
  44. ^ Attorney-General for Australia, Nicola Roxon (24 March 2012). "Tropical Cyclone Lua- Affected Western Australia Communities To Receive Disaster Assistance Under Natural Disaster Relief and Recovery Arrangements". Australian Government News.(subscription required)
  45. ^ Department of Fire and Emergency Services. "2011/12 Wandrra Eligible Disaster Proclamation Notification: Tropical Cyclone Lua and Associated Flooding (17 March 2012)" (PDF). Government of Western Australia. Archived from the original (PDF) on 24 April 2013. Retrieved 24 November 2013.
  46. ^ "Tropical Cyclone Operation Plan for the South Pacific and South-East Indian Ocean" (PDF). World Meteorological Organization. 2012. Retrieved 24 November 2013.
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