Cold/Wind Chill — Eastern Roosevelt, Montana

2022-12-21 to 2022-12-23 · Eastern Roosevelt, Montana

Event narrative

For multiple sites across Eastern Roosevelt County, temperatures in the teens to 30s below zero and breezy winds created intermittent periods of wind chills of -40 or worse from early morning of the 21st into the late morning of the 23rd. The peak wind chill of -53 was recorded at 8:25 AM on the 23rd at the Big Sky Field Airport AWOS (KS85).

Wider weather episode

An Arctic Air Mass brought the coldest temperatures that northeast Montana has seen in 3 years. Wind chills with this cold air outbreak measured lower than -60 degrees in places.

Source: NOAA Storm Events Database, event_id 1066820. Narrative written by the NWS forecast office that issued the report.