The combination of a moist Pacific storm system and the intrusion of cold Arctic air produced a wide range of weather conditions.  Strong gusty winds produced very cold wind chill temperatures.  Heavy snow and wind produced areas of blowing snow, along with isolated near blizzard condition.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall was measured at 13 inches by a trained spotter, 6 miles south-southwest of Eureka Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A listener called in to a local tv station estimating snowfall of 13 inches in Eureka Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow measured at 11 inches was reported 5 miles north-northwest of Eureka Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Estimated snowfall of 8 inches at the fire department in Eureka Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow measured at 6.6 inches was reported in Troy Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Snowfall estimated at 6 inches in Troy Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall measured at 8 inches was reported 5 miles southeast of Yaak Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall was measured at 7 inches 9 miles north-northeast of Yaak Montana.

Heavy Snow in KOOTENAI/CABINET REGION, MONTANA
From 22-FEB-11 03:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Snowfall was estimated at 5 inches in Libby Montana. Libby sheriff dispatch reported accidents across the town.

Heavy Snow in LOWER CLARK FORK REGION, MONTANA
From 21-FEB-11 21:00:00 to 22-FEB-11 07:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall of 11.4 inches was measured 2 miles northwest of Heron Montana.

Heavy Snow in WEST GLACIER REGION, MONTANA
From 21-FEB-11 22:00:00 to 22-FEB-11 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall was measured at 9 inches northeast of Essex Montana.  At 830 am the snow was falling at a rate of 1 inch per hour.

Extreme Cold/Wind Chill in WEST GLACIER REGION, MONTANA
From 24-FEB-11 03:08:00 to 24-FEB-11 04:45:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Temperatures of -4 to -5 degrees F, along with wind gusts of 15 to 29 mph produced wind chill temperatures 20 below zero degrees F at Esses Montana on US highway 2.