| Green Mountain | |
|---|---|
 Green Mountain with Middle Fork Snoqualmie River | |
| Highest point | |
| Elevation | 4,824 ft (1,470 m)[1] |
| Prominence | 464 ft (141 m)[1] |
| Parent peak | Moolock Mountain (4,965 ft)[2] |
| Isolation | 2.53 mi (4.07 km)[2] |
| Coordinates | 47°31′03″N121°40′25″W / 47.517633°N 121.673602°W /47.517633; -121.673602[1] |
| Geography | |
  Green Mountain Location in Washington Show map of Washington (state) Green Mountain Green Mountain (the United States) Show map of the United States | |
| Location | King County,Washington state, U.S. |
| Parent range | Cascade Range |
| Topo map | USGSMount Si |
| Climbing | |
| Easiest route | Scrambling |
Green Mountain is a 4,824-foot (1,470-metre) mountain summit located inKing County ofWashington state.[3] It's situated at the western edge of theCascade Range on land managed byMount Baker-Snoqualmie National Forest. Green Mountain is more notable for its large, steep rise above local terrain than for its absolute elevation. Its nearest neighbor isMount Teneriffe, 1.18 miles (1.90 km) to the southwest, and the nearest higher peak isMoolock Mountain, 2.53 miles (4.07 km) to the northeast.[1] Precipitationrunoff from Green Mountain drains into tributaries of theSnoqualmie River.
Green Mountain is located in themarine west coast climate zone of westernNorth America.[4] Mostweather fronts originate in thePacific Ocean, and travel northeast toward theCascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the west side of the Cascades experiences high precipitation, especially during the winter months in the form of snowfall. 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 ofmaritime influence, snow tends to be wet and heavy, resulting inavalanche danger.[4]
The history of the formation of the Cascade Mountains dates back millions of years ago to the lateEocene Epoch.[5] During thePleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[5] The last glacial retreat in the area began about 14,000 years ago and was north of the Canada–US border by 10,000 years ago.[5] The U-shaped cross section of the river valleys is a result of that recent glaciation.Uplift andfaulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the Cascade Range.
