Special Weather Statement
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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

Sourdough Mountain Mountain Peaks

Mountain Peaks

Pacific Ranges

Cascade Range

Last Updated: December 17, 2025

Sourdough Mountain is located in the Pacific Ranges mountain range, known for its stunning landscapes and challenging hiking trails.

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Summary

With an elevation of 6,218 feet (1,895 meters), this prominent peak offers breathtaking views of the surrounding North Cascades National Park. The mountain's size and rugged terrain make it a popular destination for experienced mountaineers seeking a thrilling adventure.

During the winter season, Sourdough Mountain experiences a substantial snowpack, which provides opportunities for winter sports enthusiasts. The snowpack range varies depending on the year, but it is not uncommon for the mountain to receive several feet of snow, transforming the area into a winter wonderland.

Sourdough Mountain is also known for its numerous creeks and rivers that receive runoff from its slopes. Some notable waterways include the Sourdough Creek, which originates from the mountain and flows into the Skagit River, as well as the nearby Diablo Lake, formed by the Skagit River.

Regarding the history and lore of Sourdough Mountain, there are fascinating stories associated with its name. The mountain earned its name from the sourdough starter carried by miners during the Klondike Gold Rush in the late 1800s. The miners used the starter to make bread while prospecting in the area. This historical connection adds a sense of adventure and nostalgia to the mountain, inviting visitors to explore its rich and captivating past.

Sources:
- National Park Service: www.nps.gov
- Washington Trails Association: www.wta.org

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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