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Mount Lyell (California): Difference between revisions

Coordinates: 37°44′22″N 119°16′18″W / 37.739424367°N 119.271568894°W / 37.739424367; -119.271568894
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m Robot - Speedily moving category United States National Park high points to Category:Highest points of United States national parks per CFDS.
Made a climate section and made a weatherbox of the 1991-2020 normals for Mount Lyell
 
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{{Short description|Mountain in the American state of California}}
{{Infobox mountain
{{Infobox mountain
| name = Mount Lyell
| name = Mount Lyell
| photo = MtLyell.jpg
| photo = File:Mt Lyell from Donahue shoulder.jpg
| photo_caption = Mount Lyell, June 2005
| photo_caption = Mount Lyell from Donahue shoulder
| elevation = {{convert|13120|ft|0|abbr=on}}<!-- currently necessary -->
| elevation = {{cvt|13120|ft|0}}<!-- currently necessary -->
| elevation_ref = {{NAVD88}}<ref name="ngs">{{cite ngs |id=HR2884 |name=Lyell 2 |accessdate=2009-06-22}}</ref>
| elevation_ref = {{NAVD88}}<ref name="ngs">{{cite ngs |id=HR2884 |name=Lyell 2 |access-date=2009-06-22}}</ref>
| prominence_ft = 1927
| prominence_ft = 1927
| prominence_ref = <ref name="pb">{{cite peakbagger |pid=2629 |name=Mount Lyell, California |accessdate=2009-06-22}}</ref>
| prominence_ref = <ref name="pb">{{cite peakbagger |pid=2629 |name=Mount Lyell, California |access-date=2009-06-22}}</ref>
| parent_peak = [[Mount Ritter]]<ref name=loj>{{cite loj |id=17797 |name=Mount Lyell |accessdate=2012-03-31}}</ref>
| parent_peak = [[Mount Ritter]]<ref name="pb"/>
| listing = {{unbulleted list
| listing = {{unbulleted list
| U.S. National Park High Point 10th<ref name=pbl>{{cite peakbagger |lid=1821 |title=U.S. National Park High Points |accessdate=2016-03-27}}</ref>
| U.S. National Park High Point 10th<ref name=pbl>{{cite peakbagger |lid=1821 |title=U.S. National Park High Points |access-date=2016-03-27}}</ref>
| [[List of highest points in California by county|California county high point]] 7th
| [[List of highest points in California by county|California county high points]] 7th
| [[List of highest mountain peaks of California|California highest major peaks]] 17th
⚫
| [[SPS Emblem]] peak<ref name="SPS">{{cite sps |accessdate=2008-09-28}}</ref>
| Western States Climbers peak<ref name="wsc">{{cite wsc |accessdate=2016-03-27}}</ref>
| [[Sierra Peaks Section|{{abbr|SPS|Sierra Peaks Section}}]] [[SPS Emblem|Emblem]] peak<ref name="SPS">{{cite sps |access-date=2008-09-28}}</ref>
⚫
| Western States Climbers peak<ref name="wsc">{{cite wsc |access-date=2016-03-27}}</ref> }}
⚫
}}
| location = [[Madera County, California|Madera]] and [[Tuolumne County, California|Tuolumne]] counties, [[California]], [[United States|U.S.]]
| location = [[Madera County, California|Madera]] and [[Tuolumne County, California|Tuolumne]] counties, [[California]], [[United States|U.S.]]
| range = [[Cathedral Range]], [[Sierra Nevada (U.S.)|Sierra Nevada]]
| range = [[Cathedral Range]], [[Sierra Nevada (U.S.)|Sierra Nevada]]
| map = USA California#USA
| map = USA California#USA
| map_width = 220
| map_width = 200
| map_caption = {{sp}}<!-- none -->
| map_caption = none
| coordinates = {{coord|37.739424367|N|119.271568894|W|type:mountain_region:US-CA_scale:100000_source:NGS|format=dms|display=inline,title}}
| coordinates = {{coord|37.739424367|N|119.271568894|W|type:mountain_region:US-CA_scale:100000_source:NGS|format=dms|display=inline,title}}
| range_coordinates =
| coordinates_ref = <ref name="ngs"/>
| coordinates_ref = <ref name="ngs"/>
| topo = [[United States Geological Survey|USGS]] Mount Lyell
| topo = [[United States Geological Survey|USGS]] Mount Lyell
Line 27: Line 27:
}}
}}


'''Mount Lyell''' is the highest point in [[Yosemite National Park]], at {{convert|13114|ft|m}}. It is located at the southeast end of the [[Cathedral Range]], {{convert|1.2|mi|km}} northwest of Rodgers Peak. The peak as well as nearby [[Lyell Canyon]] is named after [[Charles Lyell]], a well-known 19th century geologist.<ref name="farquhar">{{cite Farquhar |index=L |accessdate=2009-06-22}}</ref> The peak had one of the last remaining [[glaciers]] in Yosemite, [[Lyell Glacier]]. The Lyell Glacier is currently considered to be a permanent ice field, not a living glacier.
'''Mount Lyell''' is the highest point in [[Yosemite National Park]], at {{convert|13114|ft|m}}. It is located at the southeast end of the [[Cathedral Range]], {{convert|1+1/4|mi|km|0|abbr=off|sp=us}} northwest of [[Rodgers Peak (California)|Rodgers Peak]]. The peak as well as nearby [[Lyell Canyon]] is named after [[Charles Lyell]], a well-known 19th century geologist.<ref name="farquhar">{{cite Farquhar |index=L |access-date=2009-06-22}}</ref> The peak had one of the last remaining [[glaciers]] in Yosemite, [[Lyell Glacier]]. The Lyell Glacier is currently considered to be a permanent ice field, not a living glacier.
Mount Lyell divides the [[Tuolumne River]] watershed to the north, the [[Merced River|Merced]] to the west, and the Rush Creek drainage in the Mono Lake Basin to the southeast.
Mount Lyell divides the [[Tuolumne River]] watershed to the north, the [[Merced River|Merced]] to the west, and the Rush Creek drainage in the Mono Lake Basin to the southeast.


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Most summit ascents are done either over or around the Lyell Glacier. Seasonal and year-to-year variations on the glacier make it necessary to assess current conditions before choosing a route to the summit. The northwest Ridge, from the saddle between Mount Lyell and nearby [[Mount Maclure]], offers {{YDS|2 to 3}} climbing with high snow levels on the glacier. Low snow levels increases the grade to class 3 to 4 on the exposed granite ledges, in which cases it may be easier to ascend the glacier more directly to the summit.
Most summit ascents are done either over or around the Lyell Glacier. Seasonal and year-to-year variations on the glacier make it necessary to assess current conditions before choosing a route to the summit. The northwest Ridge, from the saddle between Mount Lyell and nearby [[Mount Maclure]], offers {{YDS|2 to 3}} climbing with high snow levels on the glacier. Low snow levels increases the grade to class 3 to 4 on the exposed granite ledges, in which cases it may be easier to ascend the glacier more directly to the summit.


The summit block of Mount Lyell is composed of dark volcanic granite, similar to its neighbors do the southeast, Rodgers Peak, Mount Davis, Banner Peak, and Mount Ritter. This rock is very loose and unstable for climbing, making the ascent to the summit plateau dangerous when the glacier is low, exposing the lower reaches of the summit block. For this reason, some climbers consider Mount Lyell and nearby Mount Maclure to actually be geologically part of the Ritter Range.
The summit block of Mount Lyell is composed of dark volcanic granite, similar to its neighbors to the southeast, Rodgers Peak, Mount Davis, Banner Peak, and Mount Ritter. This rock is very loose and unstable for climbing, making the ascent to the summit plateau dangerous when the glacier is low, exposing the lower reaches of the summit block. For this reason, some climbers consider Mount Lyell and nearby Mount Maclure to actually be geologically part of the Ritter Range.


The grade of the East [[Arête|Arete]] likewise increases with low snow conditions, going from class 3 to class 4 (the looseness of the rock underlying the glacier on the East Arete makes it somewhat dangerous in low snow conditions). Other routes exist on the south and west sides, but of greater difficulty and longer approaches.
The grade of the East [[Arête|Arete]] likewise increases with low snow conditions, going from class 3 to class 4 (the looseness of the rock underlying the glacier on the East Arete makes it somewhat dangerous in low snow conditions). Other routes exist on the south and west sides, but of greater difficulty and longer approaches.

==Climate==
{{Weather box
|location = Mount Lyell 37.7418 N, 119.2731 W, Elevation: {{cvt|12362|ft}} (1991–2020 normals)
|single line = y

|Jan high F = 29.3
|Feb high F = 28.2
|Mar high F = 31.1
|Apr high F = 34.0
|May high F = 41.4
|Jun high F = 50.9
|Jul high F = 58.6
|Aug high F = 58.0
|Sep high F = 52.6
|Oct high F = 44.0
|Nov high F = 35.6
|Dec high F = 29.2

|Jan mean F = 19.1
|Feb mean F = 17.5
|Mar mean F = 19.9
|Apr mean F = 22.6
|May mean F = 29.8
|Jun mean F = 39.1
|Jul mean F = 46.7
|Aug mean F = 46.0
|Sep mean F = 40.4
|Oct mean F = 32.6
|Nov mean F = 25.0
|Dec mean F = 19.1

|Jan low F = 9.0
|Feb low F = 6.7
|Mar low F = 8.7
|Apr low F = 11.2
|May low F = 18.3
|Jun low F = 27.3
|Jul low F = 34.8
|Aug low F = 34.0
|Sep low F = 28.2
|Oct low F = 21.1
|Nov low F = 14.4
|Dec low F = 9.0

|precipitation colour = green
|Jan precipitation inch = 11.01
|Feb precipitation inch = 9.01
|Mar precipitation inch = 8.75
|Apr precipitation inch = 4.72
|May precipitation inch = 2.64
|Jun precipitation inch = 0.87
|Jul precipitation inch = 0.65
|Aug precipitation inch = 0.42
|Sep precipitation inch = 0.74
|Oct precipitation inch = 2.65
|Nov precipitation inch = 4.06
|Dec precipitation inch = 9.62

|source=PRISM Climate Group<ref>{{cite web
|url= http://prism.oregonstate.edu/explorer/
|title= PRISM Climate Group, Oregon State University
|publisher= PRISM Climate Group, Oregon State University
|access-date= October 8, 2023
|quote= To find the table data on the PRISM website, start by clicking ''Coordinates'' (under ''Location''); copy ''Latitude'' and ''Longitude figures'' from top of table; click ''Zoom to location''; click ''Precipitation, Minimum temp, Mean temp, Maximum temp''; click ''30-year normals, 1991-2020''; click ''800m''; click ''Retrieve Time Series'' button.}}</ref>
⚫
}}


== See also ==
== See also ==
* [[List of highest points in California by county]]
* [[List of highest points in California by county]]
* [[Lyell Canyon]]
* [[Lyell Meadow]]


== References ==
== References ==
{{reflist}}
{{Reflist}}


{{refbegin}}
{{Refbegin}}
* {{cite journal
* {{cite book
| last = Townsend
| last = Townsend
| first = Charles E.
| first = Charles E.
Line 55: Line 123:
| pages = 567–588
| pages = 567–588
| url = https://books.google.com/books?id=UlU4AAAAIAAJ&pg=PA3 }}
| url = https://books.google.com/books?id=UlU4AAAAIAAJ&pg=PA3 }}
{{refend}}
{{Refend}}


== External links ==
== External links ==
* {{cite gnis |id=263079 |name=Mount Lyell}}
* {{cite gnis |id=263079 |name=Mount Lyell}}
* {{cite summitpost |id=150494 |name=Mount Lyell}}
* {{cite summitpost |id=150494 |name=Mount Lyell}}
* {{cite web |url=http://www.cohp.org/ca/Tuolumne_1.html |title=Mount Lyell |publisher=County Highpointers |accessdate=2009-08-12}}
* {{cite web |url=http://www.cohp.org/ca/Tuolumne_1.html |title=Mount Lyell |publisher=County Highpointers}}
* {{cite web
* {{cite web
| url = http://yosemiteexplorer.com/trails/mount-lyell
| url = http://yosemiteexplorer.com/trails/mount-lyell
| title = Mount Lyell from Tuolumne Meadows via Lyell Canyon
| title = Mount Lyell from Tuolumne Meadows via Lyell Canyon
| publisher = Yosemite Explorer
| publisher = Yosemite Explorer }}
| accessdate = 2009-08-12 }}
* {{cite book
* {{cite book
| last = Russell
| last = Russell
Line 77: Line 144:
| isbn = 0-939666-60-X
| isbn = 0-939666-60-X
| year = 1947}}
| year = 1947}}

{{Sierra Nevada}}
{{Authority control}}


{{DEFAULTSORT:Lyell, Mount}}
{{DEFAULTSORT:Lyell, Mount}}

Latest revision as of 00:18, 9 October 2023

Mount Lyell
Mount Lyell from Donahue shoulder
Highest point
Elevation13,120 ft (3,999 m) NAVD 88[1]
Prominence1,927 ft (587 m)[2]
Parent peakMount Ritter[2]
Listing
Coordinates37°44′22″N 119°16′18″W / 37.739424367°N 119.271568894°W / 37.739424367; -119.271568894[1]
Geography
Mount Lyell is located in California
Mount Lyell
Mount Lyell
Mount Lyell is located in the United States
Mount Lyell
Mount Lyell
LocationMadera and Tuolumne counties, California, U.S.
Parent rangeCathedral Range, Sierra Nevada
Topo mapUSGS Mount Lyell
Climbing
First ascentAugust 29, 1871 by John Boies Tileston[6]
Easiest routeExposed scramble, class 3[4]

Mount Lyell is the highest point in Yosemite National Park, at 13,114 feet (3,997 m). It is located at the southeast end of the Cathedral Range, 1+1⁄4 miles (2 kilometers) northwest of Rodgers Peak. The peak as well as nearby Lyell Canyon is named after Charles Lyell, a well-known 19th century geologist.[7] The peak had one of the last remaining glaciers in Yosemite, Lyell Glacier. The Lyell Glacier is currently considered to be a permanent ice field, not a living glacier. Mount Lyell divides the Tuolumne River watershed to the north, the Merced to the west, and the Rush Creek drainage in the Mono Lake Basin to the southeast.

Climbing

[edit]

The most common approach to Mount Lyell is from Tuolumne Meadows on a highly traveled section of the John Muir Trail. The round trip is approximately 25 miles (40 km) and involves 4,500 feet (1,370 m) of elevation gain when starting from the Tuolumne Wilderness Office. The hike is easy from Tuolumne Meadows, following the Tuolumne River to the head of the Lyell Canyon, and becomes moderate as it approaches Donohue Pass. Before reaching Donahue Pass, the route leaves the trail and heads south towards Mount Lyell.

Most summit ascents are done either over or around the Lyell Glacier. Seasonal and year-to-year variations on the glacier make it necessary to assess current conditions before choosing a route to the summit. The northwest Ridge, from the saddle between Mount Lyell and nearby Mount Maclure, offers class 2 to 3 climbing with high snow levels on the glacier. Low snow levels increases the grade to class 3 to 4 on the exposed granite ledges, in which cases it may be easier to ascend the glacier more directly to the summit.

The summit block of Mount Lyell is composed of dark volcanic granite, similar to its neighbors to the southeast, Rodgers Peak, Mount Davis, Banner Peak, and Mount Ritter. This rock is very loose and unstable for climbing, making the ascent to the summit plateau dangerous when the glacier is low, exposing the lower reaches of the summit block. For this reason, some climbers consider Mount Lyell and nearby Mount Maclure to actually be geologically part of the Ritter Range.

The grade of the East Arete likewise increases with low snow conditions, going from class 3 to class 4 (the looseness of the rock underlying the glacier on the East Arete makes it somewhat dangerous in low snow conditions). Other routes exist on the south and west sides, but of greater difficulty and longer approaches.

Climate

[edit]
Climate data for Mount Lyell 37.7418 N, 119.2731 W, Elevation: 12,362 ft (3,768 m) (1991–2020 normals)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °F (°C) 29.3
(−1.5) 		28.2
(−2.1) 		31.1
(−0.5) 		34.0
(1.1) 		41.4
(5.2) 		50.9
(10.5) 		58.6
(14.8) 		58.0
(14.4) 		52.6
(11.4) 		44.0
(6.7) 		35.6
(2.0) 		29.2
(−1.6) 		41.1
(5.0)
Daily mean °F (°C) 19.1
(−7.2) 		17.5
(−8.1) 		19.9
(−6.7) 		22.6
(−5.2) 		29.8
(−1.2) 		39.1
(3.9) 		46.7
(8.2) 		46.0
(7.8) 		40.4
(4.7) 		32.6
(0.3) 		25.0
(−3.9) 		19.1
(−7.2) 		29.8
(−1.2)
Mean daily minimum °F (°C) 9.0
(−12.8) 		6.7
(−14.1) 		8.7
(−12.9) 		11.2
(−11.6) 		18.3
(−7.6) 		27.3
(−2.6) 		34.8
(1.6) 		34.0
(1.1) 		28.2
(−2.1) 		21.1
(−6.1) 		14.4
(−9.8) 		9.0
(−12.8) 		18.6
(−7.5)
Average precipitation inches (mm) 11.01
(280) 		9.01
(229) 		8.75
(222) 		4.72
(120) 		2.64
(67) 		0.87
(22) 		0.65
(17) 		0.42
(11) 		0.74
(19) 		2.65
(67) 		4.06
(103) 		9.62
(244) 		55.14
(1,401)
Source: PRISM Climate Group[8]

See also

[edit]

References

[edit]
  1. ^ a b "Lyell 2". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. Retrieved 2009-06-22.
  2. ^ a b "Mount Lyell, California". Peakbagger.com. Retrieved 2009-06-22.
  3. ^ "U.S. National Park High Points". Peakbagger.com. Retrieved 2016-03-27.
  4. ^ a b "Sierra Peaks Section List" (PDF). Angeles Chapter, Sierra Club. Retrieved 2008-09-28.
  5. ^ "Western States Climbers Qualifying Peak List". Climber.org. Retrieved 2016-03-27.
  6. ^ Secor, R.J. (2009). The High Sierra Peaks, Passes, and Trails (3rd ed.). Seattle: The Mountaineers. pp. 415–417. ISBN 978-0898869712.
  7. ^ Farquhar, Francis P. (1926). Place Names of the High Sierra. San Francisco: Sierra Club. Retrieved 2009-06-22.
  8. ^ "PRISM Climate Group, Oregon State University". PRISM Climate Group, Oregon State University. Retrieved October 8, 2023. To find the table data on the PRISM website, start by clicking Coordinates (under Location); copy Latitude and Longitude figures from top of table; click Zoom to location; click Precipitation, Minimum temp, Mean temp, Maximum temp; click 30-year normals, 1991-2020; click 800m; click Retrieve Time Series button.
[edit]
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