Extreme Cold/Wind Chill — Southern Rocky Mountain Front, Montana

2022-12-20 · Southern Rocky Mountain Front, Montana

Event narrative

One location measured a wind chill of -40 F or less, which was the Benchmark RAWS (BEFM8) which measured a minimum wind chill of -41 F.

Wider weather episode

Arctic air dropped south from Canada the week before Christmas bringing widespread frigid wind chills to the region. The arctic front reported in strong wind gusts and blizzard conditions in Southwest Montana. Additional areas of light to moderate snow affected much of the region.

Source: NOAA Storm Events Database, event_id 1070166. Narrative written by the NWS forecast office that issued the report.