A powerful storm brought heavy snows, high winds which resulted in many road closures over the period.

Winter Storm in BEAVERHEAD-LEMHI HIGHLANDS, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Two to 4 inches of snow combined with widespread 40 to 50 mph wind gusts closed interstate 15 on teh 1st and 2nd from Hamer to the Montana border.

Heavy Snow in WOOD RIVER FOOTHILLS, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy snow amounts reported were 13.3 inches at Bellevue and 12.5 inches 1 mile northwest of Hailey.

Heavy Snow in SAWTOOTH-STANLEY BASIN, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Widespread 10 to 15 inches of snow were reported in Stanley by spotters and COOP observers.

Heavy Snow in SUN VALLEY REGION, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The Galena Lodge recorded 17 inches of snow and the Ketchum COOP observer recorded 14.5 inches.

Winter Storm in UPPER SNAKE RIVER PLAIN, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A storm system brought snow with wind gusts of 40 to 50 mph.  Snow amounts were in the 1 to 4 inch range.   The snow combined with the wind caused US Highway 26 to close from Ririe to Swan Valley with blowing and drifting snow from 11 PM on the 1st through the 2nd.   Ririe school district 252 closed due to road conditions on the 2nd.

Winter Storm in ARCO-MUD LAKE DESERT, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

One to 3 inches of snow combined with 40 to 50 mph wind gusts caused extensive blowing and drifting snow which closed interstate 15 on the afternoon of the 1st into the 2nd from Hamer to the Montana border.

Winter Storm in TETON VALLEY, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy snow combined with 40 to 50 mph wind gusts caused extensive blowing and drifting snow closing roads and schools.  Ashton recorded 13 inches of snow.   Fremont School District 215 and Teton School District 401 closed due to road conditions on the 2nd.  US Highway 20 was closed on the 1st and 2nd from Ashton to Targhee Pass.  Idaho 33 was closed from Newdale to Tetonia on the 1st and 2nd.  And Idaho 47 was closed from Ashton to northeast of Warm River on the 2nd.

Winter Storm in CENTENNIAL MOUNTAINS-ISLAND PARK, IDAHO
From 01-DEC-22 01:00:00 to 02-DEC-22 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Extremely heavy snow fell and combined with high winds with gusts 40 to 50 mph to close roads and schools on the 1st and 2nd.   Multiple reports of 15 to 20 inches of snowfall was recorded in Island Park.   Fremont County School District 215 was closed on the 2nd due to road conditions.   US Highway 20 was closed from Ashton to Targhee Pass on the 1st and 2nd.   Idaho 87 was closed from US 20 intersection north to Raynolds Pass on the 1st and 2nd, and Idaho 47 was closed from Ashton north to northeast of Warm River on the 1st and 2nd.