A progressive upper trough moved into the area from the Gulf of Alaska helped to transport moisture from the southwest while cold, arctic air was pouring south from Canada. The storm impacted Thanksgiving travellers with several inches of snow, then heavy drifting on mainly the Tuesday night and Wednesday. Dangerous windchills then affected the area Wednesday until early Thanksgiving Day.

Winter Storm in EASTERN ROOSEVELT, MONTANA
From 23-NOV-10 20:00:00 to 24-NOV-10 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds and snowfall caused severe drifting along Highway 2.

Winter Storm in GARFIELD, MONTANA
From 23-NOV-10 08:00:00 to 24-NOV-10 10:02:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0927 MST on November 24th, spotter 14 miles southwest of Brusett reported gusty winds that produced 2 foot drifts. At 0938 MST, spotter 1 mile south of Jordan reported 3 foot drifts which impacted travel. At 1002 MST, spotter 6 miles southeast of Cohagen reported 18 inch snow drifts.

Winter Storm in MCCONE, MONTANA
From 24-NOV-10 01:00:00 to 24-NOV-10 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0942 MST 28 miles west of Vida 2.5 inches of new snow fell which helped to create 2 foot drifts. At 0950 MST 14 miles west-southwest of Brockway 6 to 8 inches of new snow fell, 25 to 35 mph winds caused significant drifting. At 0958 40 miles northwest of Terry 2 inches of new snow combined with 20 to 30 mph winds created 1 to 2 foot drifts which impacted roads. At 1035 MST 14 miles west of Circle 1 inch of new snow fell along with 30 mph winds creating blowing and drifting snow.

Winter Storm in WIBAUX, MONTANA
From 24-NOV-10 03:00:00 to 24-NOV-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 1025 MST 16 miles south of Wibaux estimated 1 inch of new snow along with sustained winds of 30 mph and several drifts of 2 feet. At 1130 MST 9 miles northwest of Carlyle 1 inch of new snow with winds sustained at 25 mph causing drifting snow.

Winter Storm in NORTHERN VALLEY, MONTANA
From 23-NOV-10 08:00:00 to 24-NOV-10 09:23:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0910 MST, a spotter 14 miles southeast of Opheim reported three to seven inches of new snow. The drifting also created hazardous travel impacts.

Winter Storm in CENTRAL AND SE PHILLIPS, MONTANA
From 23-NOV-10 08:00:00 to 24-NOV-10 10:02:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0842 MST, spotter 10 miles south of Dodson reported 2 to 4 inches of new snow, but drifts of 2 to 4 feet have significantly impacted travel.

Winter Storm in LITTLE ROCKY MOUNTAINS, MONTANA
From 23-NOV-10 00:00:00 to 24-NOV-10 10:02:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0837 MST, spotter 8 miles southwest of Zortman reported drifts of 2 to 4 feet impacting road conditions. At 0839 MST, spotter in Zortman reported 4 to 5 inches of new snow.

Winter Storm in CENTRAL AND SOUTHERN VALLEY, MONTANA
From 23-NOV-10 08:00:00 to 24-NOV-10 10:02:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 0856 MST November 24th, spotter 46 miles southwest of Glasgow reported 1 to 2 inches of snow with several 2 foot drifts. At 0902 MST spotter 13 miles north of Hinsdale gusty winds overnight caused 3 foot drifts impacting road conditions on Highway 2. At 0940 MST, 8 miles north of Frazer, 3 inches of new snow was obseved with 3 foot drifts.

Winter Storm in WESTERN ROOSEVELT, MONTANA
From 23-NOV-10 20:00:00 to 24-NOV-10 14:50:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

At 1000 MST on November 24th, strong winds and snowfall caused severe drifting along Highway 2.

Winter Storm in DAWSON, MONTANA
From 24-NOV-10 01:00:00 to 24-NOV-10 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 1040 MST 3 miles southwest of Hoyt estimated 1 inch of new snow with 30 to 35 mph winds began around midnight. At 1011 MST Fallon 20 to 25 mph winds caused blowing and drifting snow.