Heavy Snow — Gallatin Valley, Montana

2022-10-22 to 2022-10-23 · Gallatin Valley, Montana

Event narrative

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

Wider weather episode

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_id 1059559. Narrative written by the NWS forecast office that issued the report.