A broad, deep upper level trough set up over most of the CONUS, resulting in northwesterly flow across Montana. Multiple waves moved through the area embedded within this flow, resulting in periods of snow, which were heavy at times. In addition to the snow, winds would occasionally be gusty, and combined with low temperatures to occasionally produce low wind chills. However, wind chills warranting Wind Chill Warnings would not be seen until later in the week.

Heavy Snow in BEAVERHEAD, MONTANA
From 05-FEB-21 04:30:00 to 06-FEB-21 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS station mt-bv-18 reports 5.5IN of snow.

Winter Weather in CHOUTEAU, MONTANA
From 05-FEB-21 08:00:00 to 06-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Co-op observer station ftbm8 fort benton coop reports 3 inches of snow.

Winter Weather in BLAINE, MONTANA
From 05-FEB-21 13:00:00 to 06-FEB-21 05:45:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Co-op observer station cnkm8 chinook coop reports 1.5 inches of snow.

Heavy Snow in BEAVERHEAD, MONTANA
From 06-FEB-21 12:00:00 to 07-FEB-21 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm total so far for Saturday through mid-afternoon Sunday. Still snowing.

Winter Weather in CASCADE, MONTANA
From 05-FEB-21 04:00:00 to 07-FEB-21 14:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One additional inch of snow fell since 2/6 at noon, resulting in a storm total of 5 inches since Friday. Overnight low was -14F.

Winter Weather in BEAVERHEAD, MONTANA
From 05-FEB-21 04:00:00 to 07-FEB-21 10:45:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Storm total of 4.9 inches.

Winter Weather in CASCADE, MONTANA
From 05-FEB-21 04:00:00 to 07-FEB-21 10:45:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Storm total of 4.9 inches of snow.

Winter Weather in CHOUTEAU, MONTANA
From 05-FEB-21 07:00:00 to 06-FEB-21 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Co-op observer station lomm8 loma 1 wnw coop reports 3 inches of snow.

Heavy Snow in FERGUS, MONTANA
From 05-FEB-21 09:00:00 to 06-FEB-21 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated about 7 inches storm total since Friday morning. Visibility about 1/2 mile right now.

Heavy Snow in GALLATIN, MONTANA
From 06-FEB-21 19:00:00 to 07-FEB-21 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

New snow accumulated 5.8 inches overnight. Snow continues.

Heavy Snow in EASTERN GLACIER, MONTANA
From 05-FEB-21 06:00:00 to 06-FEB-21 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Estimated 7 inches of snowfall in the cut bank area since Friday.

Heavy Snow in JEFFERSON, MONTANA
From 05-FEB-21 03:00:00 to 07-FEB-21 13:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Storm total snowfall of one foot reported near Clancy.

Heavy Snow in JEFFERSON, MONTANA
From 05-FEB-21 03:00:00 to 05-FEB-21 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public estimate of 10 inches of new snow on Friday.

Heavy Snow in JUDITH BASIN, MONTANA
From 05-FEB-21 04:00:00 to 07-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter estimated 12 inches storm total snow. Drifted with variable depth.

Heavy Snow in SOUTHERN LEWIS AND CLARK, MONTANA
From 06-FEB-21 08:00:00 to 07-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

New snow in the last 24 hours is 8 inches. Storm total snowfall of 11.9 inches.

Heavy Snow in MADISON, MONTANA
From 07-FEB-21 03:00:00 to 07-FEB-21 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Since 3am, 10 inches of new snow (nine hours). still snowing heavy with one-eight mile visibility.

Heavy Snow in MEAGHER, MONTANA
From 05-FEB-21 14:00:00 to 06-FEB-21 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Estimated 10 inches of snowfall at showdown ski area in the last 24 hours. still snowing hard. report via facebook.

Heavy Snow in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 05-FEB-21 19:00:00 to 07-FEB-21 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Storm total snowfall of 7 inches from Friday night through Sunday mid-afternoon. Still snowing lightly, but little additional accumulation.

Heavy Snow in BEAVERHEAD, MONTANA
From 05-FEB-21 05:00:00 to 06-FEB-21 11:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm total of 6 inches of snow so far. Snow continues.

Heavy Snow in JEFFERSON, MONTANA
From 05-FEB-21 05:00:00 to 08-FEB-21 07:45:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 12 inches of snow.

Heavy Snow in FERGUS, MONTANA
From 05-FEB-21 15:00:00 to 08-FEB-21 09:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm total snow of 9.8 inches since 3PM Friday.