Heavy Snow in Gallatin Valley, Montana

Heavy Snow October 22, 2022 – October 23, 2022 · Gallatin Valley, Montana

What the National Weather Service wrote

Spotter reports 10.5 inches new snow accumulation. Bozeman MSU co-op reported 12.3 inches storm total accumulation.

The wider storm

An unusually deep longwave trough overspread the region from the 22nd through the 23rd, bringing ample Pacific moisture for an impactful winter storm. Initially, the thought was that mountain snow and lower elevation rain would occur, but as the event got closer, it became evident that snow at lower elevation would occur, which prompted the expansion of Winter Storm Warnings to lower elevations.

Source: NOAA Storm Events Database, event 1059559. Narratives are written by the National Weather Service forecast office that issued the report.

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