Extreme Cold/Wind Chill — Big Belt, Bridger and Castle Mountains, Montana

2025-02-11 · Big Belt, Bridger and Castle Mountains, Montana

Event narrative

Mesonet sensor MTBZH Bozeman Pass (MT DOT) measured a wind chill of -35F.

Wider weather episode

A cyclonic flow aloft, with several embedded shortwaves passing through it, allowed for several pushes of bitterly cold air to filter into the region from Canada in the early to mid February timeframe.

Source: NOAA Storm Events Database, event_id 1246403. Narrative written by the NWS forecast office that issued the report.