Extreme Cold/Wind Chill — Upper Blackfoot and Macdonald Pass, Montana

2025-02-03 to 2025-02-04 · Upper Blackfoot and Macdonald Pass, Montana

Event narrative

Mesonet sensor MTMDP MacDonald Pass measured a wind chill of 40F or less twice.

Wider weather episode

Several waves ejecting from an upper level low near the Pacific NW coast resulted in periods of snow at times, with cold air filtering in from Canada resulting in extreme cold in northern areas. Overall the snow event fell short of expectations, but there were still a few locations that saw heavy snow.

Source: NOAA Storm Events Database, event_id 1245099. Narrative written by the NWS forecast office that issued the report.