Twin Peaks (Wyoming)
Twin Peaks (13,191 ft (4,021 m)) is located in the Wind River Range in the U.S. state of Wyoming.[3] Twin Peaks is the 20th highest peak in Wyoming.[4] Twin Peaks is in the Bridger Wilderness of Bridger-Teton National Forest and is .58 mi (0.93 km) southwest of Mount Woodrow Wilson and about the same distance southeast of Split Mountain. Mammoth Glacier flows from the north slopes of the peak while the smaller Twins Glacier flows to the southeast.[3]
| Twin Peaks | |
|---|---|
 North aspect above Mammoth Glacier | |
| Highest point | |
| Elevation | 13,191 ft (4,021 m)[1] |
| Prominence | 385 ft (117 m)[1] |
| Coordinates | 43°09′36″N 109°39′31″W[2] |
| Geography | |
  Twin Peaks Location in Wyoming  Twin Peaks Location in the United States | |
| Location | Sublette County, Wyoming, Wyoming, U.S. |
| Parent range | Wind River Range |
| Topo map | USGS Gannett Peak |
| Geology | |
| Mountain type | Batholith |
| Climbing | |
| First ascent | 1930 (Henry Buchtel and Dudley Smith) |
Hazards
Encountering bears is a concern in the Wind River Range.[5] There are other concerns as well, including bugs, wildfires, adverse snow conditions and nighttime cold temperatures.[6]
Importantly, there have been notable incidents, including accidental deaths, due to falls from steep cliffs (a misstep could be fatal in this class 4/5 terrain) and due to falling rocks, over the years, including 1993,[7] 2007 (involving an experienced NOLS leader),[8] 2015[9] and 2018.[10] Other incidents include a seriously injured backpacker being airlifted near Squaretop Mountain[11] in 2005,[12] and a fatal hiker incident (from an apparent accidental fall) in 2006 that involved state search and rescue.[13] The U.S. Forest Service does not offer updated aggregated records on the official number of fatalities in the Wind River Range.
Climate
| Climate data for East Twin Peak (WY) 43.1593 N, 109.6592 W, Elevation: 12,503 ft (3,811 m) (1991–2020 normals) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average high °F (°C) | 19.2 (−7.1) |
18.9 (−7.3) |
24.4 (−4.2) |
29.9 (−1.2) |
38.8 (3.8) |
49.3 (9.6) |
58.9 (14.9) |
57.6 (14.2) |
48.9 (9.4) |
36.4 (2.4) |
24.9 (−3.9) |
18.5 (−7.5) |
35.5 (1.9) |
| Daily mean °F (°C) | 9.4 (−12.6) |
8.2 (−13.2) |
13.0 (−10.6) |
17.9 (−7.8) |
26.6 (−3.0) |
36.5 (2.5) |
45.2 (7.3) |
44.4 (6.9) |
36.1 (2.3) |
25.0 (−3.9) |
15.2 (−9.3) |
9.0 (−12.8) |
23.9 (−4.5) |
| Average low °F (°C) | −0.4 (−18.0) |
−2.5 (−19.2) |
1.6 (−16.9) |
5.8 (−14.6) |
14.4 (−9.8) |
23.6 (−4.7) |
31.5 (−0.3) |
31.2 (−0.4) |
23.4 (−4.8) |
13.7 (−10.2) |
5.6 (−14.7) |
−0.5 (−18.1) |
12.3 (−11.0) |
| Average precipitation inches (mm) | 3.08 (78) |
3.11 (79) |
3.96 (101) |
5.53 (140) |
4.25 (108) |
2.97 (75) |
2.01 (51) |
2.02 (51) |
3.18 (81) |
3.94 (100) |
2.99 (76) |
2.83 (72) |
39.87 (1,012) |
| Source: PRISM Climate Group[14] | |||||||||||||
References
- "Mount Koven, Wyoming". Peakbagger.com. Retrieved December 8, 2013.
- "Twin Peaks". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved December 8, 2013.
- Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved December 8, 2013.
- "Wyoming 13,000-foot Peaks". Peakbagger.com. Retrieved December 8, 2013.
- Staff (April 24, 2017). "Bear Safety in Wyoming's Wind River Country". WindRiver.org. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Ballou, Dawn (July 27, 2005). "Wind River Range condition update - Fires, trails, bears, Continental Divide". PineDaleOnline News. Archived from the original on April 21, 2021. Retrieved May 31, 2022.
- Staff (1993). "Falling Rock, Loose Rock, Failure to Test Holds, Wyoming, Wind River Range, Seneca Lake". American Alpine Club. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- MacDonald, Dougald (August 14, 2007). "Trundled Rock Kills NOLS Leader". Climbing. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Staff (December 9, 2015). "Officials rule Wind River Range climbing deaths accidental". Casper Star-Tribune. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Dayton, Kelsey (August 24, 2018). "Deadly underestimation". WyoFile News. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Funk, Jason (2009). "Squaretop Mountain Rock Climbing". Mountain Project. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Staff (July 22, 2005). "Injured man rescued from Square Top Mtn - Tip-Top Search & Rescue helps 2 injured on the mountain". PineDaleOnline News. Archived from the original on July 26, 2021. Retrieved May 31, 2022.
- Staff (September 1, 2006). "Incident Reports - September, 2006 - Wind River Search". WildernessDoc.com. Archived from the original on January 27, 2020. Retrieved May 31, 2022.
- "PRISM Climate Group, Oregon State University". PRISM Climate Group, Oregon State University. Retrieved October 14, 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.