Mount Persis

Mount Persis is a 5,464 ft summit located in Snohomish County, of Washington state.[3] The mountain is part of the Cascade Range and is situated in the Mount Baker-Snoqualmie National Forest. The mountain was named for Persis Gunn, the wife of homesteader/miner Amos Gunn who started the nearby town of Index, Washington, and also named nearby Mount Index. Precipitation runoff from the mountain drains into tributaries of the Skykomish River. The rocks of Mount Persis are volcanic in origin and are considered amongst some of the earliest expressions of volcanism in the Cascade Mountain range in Washington.

Mount Persis
Mount Persis seen from Index, WA
Highest point
Elevation5,464 ft (1,665 m)[1]
Prominence544 ft (170 m)[1]
Parent peakMount Index (5,991 ft)[2]
Isolation1.59 mi (2.56 km)[2]
Coordinates47°47.26′N 121°36.43′W
Geography
Mount Persis is located in Washington (state)
Mount Persis
Mount Persis
Location in Washington
Mount Persis is located in the United States
Mount Persis
Mount Persis
Mount Persis (the United States)
LocationSnohomish County, Washington
Parent rangeCascade Range
Topo mapUSGS Index
Geology
Age of rockTertiary
Type of rockgranodiorite
Climbing
Easiest routeTrail + class 2 scrambling

Climate

Mount Persis is located in the marine west coast climate zone of western North America.[4] Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains. As fronts approach the North Cascades, 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 snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall.[4] Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below 0 °F (−18 °C) or above 80 °F (27 °C).[4] 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.[4] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.[4]

See also

References
  1. "Mount Persis, Washington". Peakbagger.com.
  2. "Persis, Mount WA - 5,464'". Lists of John. Retrieved 2021-04-24.
  3. "Mount Persis". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2021-04-24.
  4. Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
Mt Index (left) and Mt Persis (right)
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