Artic air plunged southward behind a Canadian cold front, bringing dangerously cold wind chills to most of North-central and Southwest Montana.

Cold/Wind Chill in BEAVERHEAD, MONTANA
From 22-FEB-22 08:37:00 to 23-FEB-22 07:10:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Multiple sensors in Beaverhead county reported wind chills of -40F or lower on Feb 22 and 23, including mesonet station mtbhp Big Hole Pass (mt dot). Temperature of -18f with a sustained wind of 17 mph at the time of the report.

Cold/Wind Chill in CASCADE, MONTANA
From 23-FEB-22 06:35:00 to 23-FEB-22 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station mtmon Monarch Canyon (mt dot) measured a wind chill of -43F. Additionally, a report was made by the public of a -41F wind chill.

Cold/Wind Chill in FERGUS, MONTANA
From 23-FEB-22 05:58:00 to 23-FEB-22 05:58:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

AWOS station K1MM mike reported a wind chill of -41F the morning of Feb 23.

Cold/Wind Chill in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 22-FEB-22 06:36:00 to 23-FEB-22 05:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Two mesonets in the zone reported wind chills from -42F to -49F from Feb 22 to 23.

Cold/Wind Chill in EASTERN GLACIER, MONTANA
From 23-FEB-22 06:15:00 to 23-FEB-22 06:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS station KCTB Cut Bank Airport reported a wind chill of -41 F on Feb 23.

Cold/Wind Chill in HILL, MONTANA
From 23-FEB-22 06:30:00 to 23-FEB-22 06:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station dw0217 Havre reported a wind chill of -46F the morning of Feb 23.

Cold/Wind Chill in JEFFERSON, MONTANA
From 23-FEB-22 05:57:00 to 23-FEB-22 08:42:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Two sites, including mesonet station mtelk Elk Park (mt dot), reported wind chills from -40 to -54F the morning of Feb 23.

Cold/Wind Chill in JUDITH BASIN, MONTANA
From 23-FEB-22 03:53:00 to 23-FEB-22 06:21:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Two sites, including mesonet station sfjm8 S. Fork Judith Raws 12 NE Checkerboard reported wind chills of -40F or colder the morning of Feb 23.

Cold/Wind Chill in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 22-FEB-22 22:30:00 to 23-FEB-22 07:08:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Multiple sensors along the Southern Rocky Mountain Front reported wind chills between -40 and -46, including the Benchmark RAWS.

Cold/Wind Chill in EASTERN PONDERA, MONTANA
From 23-FEB-22 12:55:00 to 23-FEB-22 12:55:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet in Eastern Pondera county observed a wind chill of -47F.

Cold/Wind Chill in TOOLE, MONTANA
From 23-FEB-22 05:50:00 to 23-FEB-22 07:50:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station mtswt Sweetgrass (mt dot) observed wind chills between -42 and -46F the morning of Feb 23.

Cold/Wind Chill in MADISON, MONTANA
From 22-FEB-22 04:00:00 to 23-FEB-22 07:10:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Multiple sensors observed wind chills between -40 and -44F on Feb 22 and Feb 23, including mesonet station mtnor Norris Hill (mt dot).

Cold/Wind Chill in MEAGHER, MONTANA
From 22-FEB-22 07:05:00 to 23-FEB-22 02:08:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Multiple sensors observed wind chills between -42 and -45 F on Feb 22 and 23, including mesonet station ncrm8 Newlan Creek RAWS.