An upper low moved across south central Wyoming during the late night hours of the 29th through the 30th. This resulted in a deep upslope flow across much of the Billings Forecast Area. Heavy snow, along with some freezing rain and freezing drizzle were widespread across the area. Severe driving conditions were common. I-90 was closed for a period of time through Big Horn County into Sheridan County Wyoming.

Winter Storm in CRAZY MOUNTAINS, MONTANA
From 29-NOV-19 06:00:00 to 30-NOV-19 09:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 11+ inches was reported across the Melville area.

Winter Storm in ABSAROKA / BEARTOOTH MOUNTAINS, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Cole Creek and Box Canyon Snotels received 12 inches of snow.

Winter Storm in SOUTHERN WHEATLAND, MONTANA
From 29-NOV-19 06:00:00 to 30-NOV-19 09:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 5 to 10 inches was reported across the area.

Winter Storm in MELVILLE FOOTHILLS, MONTANA
From 29-NOV-19 06:00:00 to 30-NOV-19 09:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 9 to 11 inches was reported across the area.

Winter Storm in NORTHERN SWEET GRASS, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 09:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 7 inches was reported across the area along with severe driving conditions on I-90 from Reed Point to Springdale.

Winter Storm in CARTER, MONTANA
From 29-NOV-19 09:50:00 to 30-NOV-19 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ekalaka reported 8 to 12 inches of snow. Black ice was also reported across the area.

Winter Storm in POWDER RIVER, MONTANA
From 29-NOV-19 07:45:00 to 30-NOV-19 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 5 to 12 inches along with black ice was reported across the area.

Winter Storm in FALLON, MONTANA
From 29-NOV-19 09:45:00 to 30-NOV-19 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 8 inches along with black ice was reported across the area.

Winter Storm in BIGHORN CANYON, MONTANA
From 29-NOV-19 06:00:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Fort Smith received 8 inches of snow.

Winter Storm in SOUTHERN BIG HORN, MONTANA
From 29-NOV-19 09:15:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 8 to 9 inches along with black ice was reported across the area. I-90 was closed from Hardin to the state line.

Winter Storm in SOUTHERN ROSEBUD, MONTANA
From 29-NOV-19 09:10:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow and black ice resulted in chains being required from Lame Deer to Ashland.

Winter Storm in NORTHERN BIG HORN, MONTANA
From 29-NOV-19 07:45:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 inches along with black ice was reported across the area. I-90 was closed from Hardin to the state line.

Winter Storm in NORTHERN ROSEBUD, MONTANA
From 29-NOV-19 09:50:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 4 to 6 inches, along with freezing drizzle and black ice, were reported across the area. I-94 was closed due to accidents.

Winter Storm in TREASURE, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 12 inches, along with freezing rain, was reported across the area.

Winter Storm in SOUTHWESTERN YELLOWSTONE, MONTANA
From 29-NOV-19 05:30:00 to 30-NOV-19 13:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 4 to 8 inches was reported across the area.

Winter Storm in NORTHEASTERN YELLOWSTONE, MONTANA
From 29-NOV-19 05:40:00 to 30-NOV-19 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 9 inches fell across the area.

Winter Storm in NORTHERN CARBON, MONTANA
From 29-NOV-19 05:30:00 to 30-NOV-19 12:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 8 inches was reported across the area.

Winter Storm in SOUTHEASTERN CARBON, MONTANA
From 29-NOV-19 04:30:00 to 30-NOV-19 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 3 to 4 inches, along with freezing drizzle, was reported across the area.

Winter Storm in RED LODGE FOOTHILLS, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 12:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 8 to 10 inches was reported across the area.

Winter Storm in GOLDEN VALLEY, MONTANA
From 29-NOV-19 06:30:00 to 30-NOV-19 11:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 12 inches was reported across the area.

Winter Storm in NORTHERN STILLWATER, MONTANA
From 29-NOV-19 05:30:00 to 30-NOV-19 10:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 11 inches was reported across the area.

Winter Storm in MUSSELSHELL, MONTANA
From 29-NOV-19 06:30:00 to 30-NOV-19 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The Bull Mountains reported 6 inches of snow.

Winter Storm in PARADISE VALLEY, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Emigrant and Pray received 10 inches of snow.

Winter Storm in BEARTOOTH FOOTHILLS, MONTANA
From 29-NOV-19 05:00:00 to 30-NOV-19 22:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 12 inches was reported across the area.

Winter Storm in LIVINGSTON AREA, MONTANA
From 29-NOV-19 05:45:00 to 30-NOV-19 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 10 inches was reported across the area.