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Heavy Snow in Northern Clearwater Mountains, Idaho
Heavy Snow December 4, 2025 – December 5, 2025 · Northern Clearwater Mountains, Idaho
What the National Weather Service wrote
The period of highest impact occurred between 0900PST and 1515PST on December 4, when snowfall rates near 1 inch per hour frequently reduced visibility to less than one mile. The Grangemont area received an estimated 8 inches of new snowfall during that period. The snow changed to freezing rain at night in the lower elevations. The surrounding mountains received 8 to 14 inches of new snowfall.
The wider storm
A potent atmospheric river moved into the Northern Rockies between December 4 and 7, delivering significant mountain snowfall.
Source: NOAA Storm Events Database, event 1304356. Narratives are written by the National Weather Service forecast office that issued the report.
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