Special Weather Statement
None

Significant rainfall over the past week has increased soil moisture to high levels across western Washington. Additional rainfall of 1 to 2 inches is expected through Friday. This amount of rain will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas, with this new rainfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides continue to be possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn

Boston Peak Mountain Peaks

Mountain Peaks

Pacific Ranges

Cascade Range

Last Updated: December 17, 2025

Boston Peak is a prominent mountaineering destination located in the Pacific Ranges mountain range, in northwest Washington state.

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Summary

With an impressive elevation of 8,894 feet (2,711 meters), it offers breathtaking views and a challenging ascent for experienced mountaineers. This glacier-clad peak is known for its sizeable south-facing snowfields, which provide excellent opportunities for skiing and snowboarding during the winter season.

During the winter months, Boston Peak experiences a significant snowpack range, with depths varying between 5 to 15 feet (1.5 to 4.5 meters). This makes it an ideal destination for backcountry skiing and snowshoeing. The mountain's snowpack is influenced by its proximity to several creeks and rivers that receive runoff from its slopes. The most notable of these is the South Fork Cascade River, which flows through the valley to the east of the peak. This water source contributes to the overall beauty and grandeur of the surrounding landscape.

The name "Boston Peak" is said to have been given by Albert Hale Sylvester, a prominent mountaineer and early explorer of the North Cascades. The origin of the name is not entirely clear, but it is believed to be named after the city of Boston, Massachusetts, possibly as a tribute or in reference to a mountaineering club from that area. While no specific legends or lore are associated with Boston Peak, its challenging terrain and scenic beauty have undoubtedly sparked the imaginations of many adventurers who have tackled its slopes throughout history.

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Special Weather Statement
Until 2025-12-18T16:00:00-08:00 • National Weather Service
Significant rainfall over the past week has increased soil moisture to high levels across western Washington. Additional rainfall of 1 to 2 inches is expected through Friday. This amount of rain will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas, with this new rainfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides continue to be possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn