Foss Peak is a summit in the Tatoosh Range which is a sub-range of the Cascade Range. It is located south of Mount Rainier within Mount Rainier National Park, in Lewis County of Washington state. The peak is named for Thea Foss (1857–1927), who founded the Foss Maritime Company with her husband in 1889. The peak also has an alternate name, Manatee Mountain.
Climate
Foss Peak is located in the marine west coast climate zone of western North America.
[Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.] Most
originating in the Pacific Ocean travel northeast toward the Cascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range (
orographic lift), causing them to drop their moisture in the form of rain or snow onto the Cascades. As a result, the west side of the Cascades experiences high precipitation, especially during the winter months in the form of snowfall.
Because of
Oceanic climate, snow tends to be wet and heavy, resulting in
avalanche danger.
During winter months, weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.
Gallery
File:Unicorn and Foss.jpg|Unicorn Peak (left) and Foss Peak (right) in winter
File:Foss Peak aka Manatee Mountain.jpg|Foss Peak (aka Manatee Mountain)
File:Unicorn Peak 8421s.JPG|Unicorn Peak (left), West Unicorn Peak, and Foss Peak (right)
File:Louise Lake, Foss Peak, Unicorn Peak.jpg| Louise Lake, Foss Peak, and Unicorn Peak.
File:Foss Peak.jpg|North-northeast aspect of Foss Peak
External links
