Hydrologic Outlook
None

ESFSEW A series of atmospheric rivers will provide rounds of increasingly impactful rainfall starting on Friday and continuing through early next week. Snow levels will remain around 5000 to 6000 feet. Expect rising rivers with potential for flooding especially for rivers flowing off the Olympics and Cascades. Urban flooding and landslides are also possible throughout this period as the soil conditions remain wet.


North Twin Sister Mountain Peaks

Last Updated: December 4, 2025

North Twin Sister is a prominent peak located in the Pacific Ranges mountain range in Washington, USA.


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Summary

With an impressive elevation of 6,140 feet, it offers breathtaking views and challenging mountaineering opportunities. This mountain is known for its rugged terrain and stunning alpine scenery.

During the winter season, North Twin Sister accumulates a substantial snowpack, making it a popular destination for backcountry skiing and snowshoeing enthusiasts. The snowpack range varies depending on the specific year and weather conditions, typically ranging from several feet to over ten feet deep. This makes it an excellent location for winter sports and activities.

Several creeks and rivers receive runoff from North Twin Sister, providing a vital water source for surrounding ecosystems. While specific creeks and rivers are not mentioned in the available sources, it can be inferred that the mountain contributes to the overall hydrology of the region.

Regarding its name origin and folklore, there is limited information available from the provided sources. Further research is recommended to uncover any potential historical or cultural significance associated with North Twin Sister.

       

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Area Campgrounds

Location Reservations Toilets
North Twin Sisterlow camp Preview low camp
North Twin SisterHogsback Camp Preview Hogsback Camp
North Twin SisterGargoyle Rocks Preview Gargoyle Rocks