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Typhoon Chanthu (2021)

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Chanthu
Current storm status
Tropical storm  (JMA)
Current storm status
Tropical storm (1-min mean)
Satellite image
Forecast map
As of:12:00 UTC, September 14
Location:30°30′N 124°42′E / 30.5°N 124.7°E / 30.5; 124.7 (Chanthu)
310 nmi (570 km; 360 mi) WSW of Sasebo, Japan
Sustained winds:45 knots (85 km/h; 50 mph) (10-min mean)
gusting to 65 knots (120 km/h; 75 mph)
45 knots (85 km/h; 50 mph) (1-min mean)
Pressure:992 hPa (29.29 inHg)
Movement:SE at 6 kn (11 km/h; 6.9 mph)
See more detailed information.

Typhoon Chanthu, known in the Philippines as Typhoon Kiko, was a powerful tropical cyclone that impacted the Philippines, Taiwan, China, Japan, and the Korean Peninsula. Chanthu was the fourteenth named storm, fourth typhoon, and second super typhoon of the 2021 Pacific typhoon season.

Chanthu made two landfalls on the Batanes Islands, part of the Philippines. The storm also caused high waves and heavy rainfall in Taiwan.

Wikimedia Commons has media related to 1989 tropical depression.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  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

At 06:00 UTC on September 5, the JTWC began monitoring on an area of convection that had formed 446 nmi (513 mi; 826 km) from Legazpi, Philippines. Satellite imagery depicted a fairly defined low-level circulation center.[1] At 18:00 UTC the same day, the JMA declared it as a tropical depression.[2] Five and half hour later, the JTWC issued a TCFA as its low-level circulation center and its surrounding convection had improved significantly.[3] At 09:00 UTC the next day, the JTWC upgraded the disturbance to a tropical depression, designating as 19W.[4] At 21:00 UTC, the JTWC upgraded it to a tropical storm as it developed a compact low-level circulation center with intense deep convection surrounding it. The JTWC also noted a formation of a eye-like feature.[5] The JMA later did the same at 00:00 UTC of September 7, naming it as Chanthu.[6] At 09:30 UTC, the PAGASA reported that Chanthu entered the PAR and was named as Kiko.[7] At 12:00 UTC, the JMA upgraded it to a severe tropical storm.[8] At the same moment, Chanthu started its rapid intensification as it quickly became a Category 1-equivalent typhoon. Satellite imagery indicate a development on of a vertical hot tower over its center, with microwave imagery indicating that it had developed a very small eye feature.[9][10] At 15:00 UTC, it shortly became a Category 2-equivalent typhoon, as it continued its explosive intensification. A pinhole eye had developed by that time.[11] Six hours later, the typhoon reached Category 4 status, with one-minute sustained wind speeds of 125 kn (230 km/h; 145 mph).[12] By the next day, at 09:00 UTC, it reached Category 5-equivalent super typhoon intensity, developing a 5 nmi (10 km; 5 mi)-wide eye which was surrounded by very compact, intense convection,[13][14] making it the second super typhoon of the year, and marking the storm's initial peak intensity. After reaching its initial peak, Chanthu was downgraded to a Category 4-equivalent super typhoon at 09:00 UTC on September 9, as its pinhole-shaped eye started to fade, indicating the start of an eyewall replacement cycle, which began a weakening trend.[15] At 15:00 UTC, Chanthu was further downgraded to a Category 4-equivalent typhoon, while eye-like feature slightly degraded.[16] At 03:00 UTC on September 10, Chanthu re-intensified into a super typhoon, clearing out its eye once again. Infrared satellite imagery showed that the typhoon had undergone a secondary eyewall replacement cycle.[17] Chanthu further intensified into a Category 5-equivalent super typhoon at 09:00 UTC that day, as its eye became clearer.[18] On 05:00 PhST of September 11 (21:00 UTC of September 10), the PAGASA reported that Chanthu passed to the east of the Babuyan Islands;[19] at 08:30 PhST (00:30 UTC), Chanthu made landfall in Ivana, Batanes as a Category 5 super typhoon with winds of 265 km/h (165 mph) as the storm began to weaken slightly.[20][21]

Current storm information

As of 12:00 UTC September 14, Tropical Storm Chanthu is located near 30°30′N 124°42′E / 30.5°N 124.7°E / 30.5; 124.7 (Chanthu) or about 310 nmi (570 km; 360 mi) west-southwest of Sasebo, Japan. Maximum 10-minute sustained winds are at 45 knots (85 km/h; 50 mph), with gusts up to 65 knots (120 km/h; 75 mph) while maximum 1-minute sustained winds are at 45 knots (85 km/h; 50 mph). The minimum central barometric pressure is 992 hPa (29.29 inHg), and the system is moving southeast at 6 kn (11 km/h; 6.9 mph).

For the latest official information see:


Preparations

In the Philippines, 415 people were evacuated.[22] As Chanthu came closer towards Luzon, the PAGASA issued Signal No. 1 warnings over Cagayan and Isabela provinces.[23] At 23:00 PhST of September 9, the PAGASA raised a Signal No. 2 warning over northeastern part of Cagayan and eastern part of Babuyan and Signal No. 1 was further extended over Batanes, rest of Cagayan and Babuyan, northeastern part of Apayao and eastern part of Isabela.[24] AT 05:00 PhST next day, a Signal No. 3 warning was raised over Santa Ana, Cagayan.[25]

At 05:30 NST of September 10, the Central Weather Bureau in Taiwan issued a sea warning,[26] which was followed by a land warning for Super Typhoon Chanthu.[27] At 17:00 PhST, the PAGASA raised a Signal No. 4 warning over the northeast portion of Babuyan Islands.[28] President of Taiwan, Tsai Ing-wen advised people to stay indoors due to torrential rain and strong winds.[22] Transportation in Taiwan was also halted, with over 100 flights,[29] trains, and 46 ferries to Matsu and other surrounding islands cancelled.[22] Around 2,000 people in landslide-prone areas in the eastern portions of Hualien County were evacuated, and sections of highway in the area were closed by authorities. The Taiwanese Defence Ministry put 31,000 troops on standby.[29]

The storm shut down both China's Shanghai Port and the Port of Ningbo-Zhoushan, the world’s largest port by cargo throughput, between September 12–14. About 86 vessels were left waiting outside the ports.[30]

Impact

Philippines

The Batanes Islands suffered a direct hit from Chanthu, which destroyed infrastructure and caused power outages there. Some local residents called it "the strongest typhoon" they had seen.[31] More than 30,000 residents were affected in the Ilocos, Cagayan Valley, Central Luzon, and the Cordillera Administrative Region. Four municipalities lost power, and one municipality experienced a water supply outage; those services were still not restored as of September 15. There were also reports of landslide and flooding, mostly from Ilocos and Central Luzon. According to the National Disaster Risk Reduction and Management Council (NDRRMC), total damages from the typhoon were up to ₱18.3 million (US$368,000).[32]

Taiwan

The eastern portions of Hualien and Taitung counties received around 200 mm (7.9 in) of rain from the typhoon. The storm brought waves of up to 7 m (23 ft) on Orchid Island. Authorities reported that 26,000 houses lost power.[33] The capital city of Taiwan, Taipei, also received heavy rainfall. Winds up to 164 km/h (102 mph) were reported.[34]

See also

References

  1. ^ Significant Advisory for Western and Southern Pacific (Report). United States Joint Typhoon Warning Center. 6 September 2021. Archived from the original on September 5, 2021. Retrieved 6 September 2021.
  2. ^ "JMA Weather and Summary 051800". Tokyo, Japan: Japan Meteorological Agency. September 5, 2021. Archived from the original on September 6, 2021. Retrieved September 6, 2021.
  3. ^ Tropical Cyclone Formation Alert (Invest 95W) (Report). United States Joint Typhoon Warning Center. 6 September 2021. Archived from the original on September 5, 2021. Retrieved 6 September 2021.
  4. ^ Tropical Depression 19W (Nineteen) Warning No. 1 (Report). United States Joint Typhoon Warning Center. 6 September 2021. Archived from the original on September 6, 2021. Retrieved 6 September 2021.
  5. ^ Prognostic Reasoning for Tropical Storm 19W (Nineteen) Warning No. 3 (Report). United States Joint Typhoon Warning Center. 6 September 2021. Archived from the original on September 6, 2021. Retrieved 7 September 2021.
  6. ^ "RSMC Prognostic Reasoning No. 3 for Tropical Storm Chanthu (2114)". Tokyo, Japan: Japan Meteorological Agency. September 5, 2021. Archived from the original on September 7, 2021. Retrieved September 6, 2021.
  7. ^ "Tropical Cyclone Bulletin #1 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 7 September 2021. Archived from the original (PDF) on 7 September 2021. Retrieved 7 September 2021.
  8. ^ "RSMC Prognostic Reasoning No. 5 for Severe Tropical Storm Chanthu (2114)". Tokyo, Japan: Japan Meteorological Agency. September 7, 2021. Archived from the original on September 7, 2021. Retrieved September 7, 2021.
  9. ^ Prognostic Reasoning for Typhoon 19W (Chanthu) Warning No. 5 (Report). United States Joint Typhoon Warning Center. 7 September 2021. Archived from the original on September 7, 2021. Retrieved 7 September 2021.
  10. ^ Prognostic Reasoning for Typhoon 19W (Chanthu) Warning No. 6 (Report). United States Joint Typhoon Warning Center. 7 September 2021. Archived from the original on September 7, 2021. Retrieved 7 September 2021.
  11. ^ Prognostic Reasoning for Typhoon 19W (Chanthu) Warning No. 6A (Report). United States Joint Typhoon Warning Center. 7 September 2021. Retrieved 7 September 2021. {{cite report}}: |archive-date= requires |archive-url= (help)
  12. ^ Prognostic Reasoning for Typhoon 19W (Chanthu) Warning No. 7 (Report). United States Joint Typhoon Warning Center. 7 September 2021. Archived from the original on September 7, 2021. Retrieved 8 September 2021.
  13. ^ Category 4-Equivalent Super Typhoon 19W (Chanthu) Warning No. 9 (Report). United States Joint Typhoon Warning Center. 8 September 2021. Archived from the original on September 8, 2021. Retrieved 8 September 2021.
  14. ^ Prognostic Reasoning for Category 4-Equivalent Super Typhoon 19W (Chanthu) Warning No. 9 (Report). United States Joint Typhoon Warning Center. 8 September 2021. Archived from the original on September 8, 2021. Retrieved 8 September 2021.
  15. ^ Prognostic Reasoning for Category 4-Equivalent Super Typhoon 19W (Chanthu) Warning No. 13 (Report). United States Joint Typhoon Warning Center. 9 September 2021. Archived from the original on September 9, 2021. Retrieved 9 September 2021.
  16. ^ Prognostic Reasoning for Typhoon 19W (Chanthu) Warning No. 14 (Report). United States Joint Typhoon Warning Center. 9 September 2021. Archived from the original on September 9, 2021. Retrieved 9 September 2021.
  17. ^ Prognostic Reasoning for Category 4-Equivalent Super Typhoon 19W (Chanthu) Warning No. 16 (Report). United States Joint Typhoon Warning Center. 10 September 2021. Archived from the original on September 10, 2021. Retrieved 10 September 2021.
  18. ^ Prognostic Reasoning for Category 4-Equivalent Super Typhoon 19W (Chanthu) Warning No. 17 (Report). United States Joint Typhoon Warning Center. 10 September 2021. Archived from the original on September 10, 2021. Retrieved 10 September 2021.
  19. ^ "Tropical Cyclone Bulletin #19 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 9 September 2021. Archived from the original (PDF) on 9 September 2021. Retrieved 9 September 2021.
  20. ^ @dost_pagasa (September 11, 2021). "At 8:30 AM today, Typhoon #KikoPH made landfall over Ivana, Batanes" (Tweet) – via Twitter.
  21. ^ @dost_pagasa (September 11, 2021). "TROPICAL CYCLONE BULLETIN NO. 21 Typhoon "#KikoPH" (CHANTHU) Issued at 11 AM, 11 September 2021 Valid for broadcast until the next bulletin at 2 PM today "KIKO" SLIGHTLY WEAKENS AND IS NOW MOVING OVER THE COASTAL WATERS OF ITBAYAT, BATANES" (Tweet) – via Twitter.
  22. ^ a b c "Typhoon Chanthu set for Taiwan after lashing Philippines". DW. September 11, 2021. Retrieved September 15, 2021.
  23. ^ "Tropical Cyclone Bulletin #6 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 9 September 2021. Archived from the original (PDF) on 9 September 2021. Retrieved 9 September 2021.
  24. ^ "Tropical Cyclone Bulletin #9 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 9 September 2021. Archived from the original (PDF) on 9 September 2021. Retrieved 9 September 2021.
  25. ^ "Tropical Cyclone Bulletin #11 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 9 September 2021. Archived from the original (PDF) on 9 September 2021. Retrieved 9 September 2021.
  26. ^ Keoni Everington. "Taiwan issues sea warning for Super Typhoon Chanthu | Taiwan News | 2021-09-10 10:31:00". www.taiwannews.com.tw. Retrieved September 11, 2021.
  27. ^ "Typhoon Chanthu spurs land warning - Taipei Times". www.taipeitimes.com. September 11, 2021. Retrieved September 11, 2021.
  28. ^ "Tropical Cyclone Bulletin #11 for Typhoon 'Kiko' (Chanthu)" (PDF). PAGASA. 9 September 2021. Retrieved 9 September 2021.
  29. ^ a b "Taiwan cancels flights as weakened Typhoon Chanthu approaches". The Manila Bulletin. Agence-France-Presse. September 12, 2021. Retrieved September 15, 2021.
  30. ^ Siqi, Ji (September 14, 2021). "China's busiest container-shipping ports in Shanghai, Ningbo begin to reopen after Typhoon Chanthu". South China Morning Post. Retrieved September 15, 2021.
  31. ^ Blaza, Peter; Wong, Jacqueline (September 12, 2021). "Strong typhoon cuts power, causes flooding in northern Philippines". Reuters. Retrieved September 13, 2021.
  32. ^ "Sitrep no.6 for Typhoon Kiko (2021)". ndrrmc.gov.ph. National Disaster Risk Reduction and Management Council. September 15, 2021. Retrieved September 15, 2021.
  33. ^ "Typhoon Chanthu drenches Taiwan but spares island a direct hit". Channel News Asia. September 12, 2021. Retrieved September 15, 2021.
  34. ^ "Typhoon pours 5 inches of rain on Taiwan, heads for Shanghai". www.washingtonpost.com. Associated Press. September 12, 2021. Retrieved September 13, 2021.
Wikimedia Commons has media related to Typhoon Chanthu (2021).
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