An active pattern developed across the area with Pacific moisture moving into the region and northwest flow aloft overrunning a strong cold front. Widespread areas of northeast Montana received several inches of snow from this storm system.

Winter Storm in CENTRAL AND SE PHILLIPS, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Observations from multiple sources, including Montana Department of Transportation sites and cooperative observers, showed that generally 4 to 10 inches of snow fell across central and southeast Phillips County from the late evening on the 7th through the day on the 8th. The greatest snowfall reported was 10 inches at a Department of Transportation site south of Malta. Road conditions were treacherous on the 8th, with ice and snow covered roads as well as reduced visibility due to blowing and drifting snow.

Winter Storm in GARFIELD, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Generally 5 to 9 inches of snow fell across Garfield County from the night of the 7th and through the day on the 8th. There were reports of 9 inches from a cooperative observer 4 miles east northeast of Mosby and 12 inches from a cooperative observer 3 miles north of Brusett. Roads across the area, including Highway 200, were ice and snow covered with significant drifts.

Winter Storm in LITTLE ROCKY MOUNTAINS, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Several inches of snow fell across the area from the night of the 7th and throughout the day on the 8th. Roads across the area, including Highway 191, were ice and snow covered with significant drifts. A cooperative observer in Zortman reported a 2 day snowfall total of 10 inches.

Winter Storm in CENTRAL AND SOUTHERN VALLEY, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Across central and southern Valley county, 3 to 6 inches of new snowfall were common.  Up to 8 inches of snow was reported approximately 45 miles southwest of Glasgow. Road conditions were treacherous on the 8th, with ice and snow covered roads as well as reduced visibility due to blowing and drifting snow.

Winter Storm in PRAIRIE, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Several inches of snow fell across Prairie County the night of the 7th through the morning hours on the 9th. Cooperative observers reported 5 inches of snow in 24 hours 5 miles north of Mildred, and 8 inches in Terry. The 8 inch storm total was 4 inches in two 24 hour periods. Additionally, roads became snow and ice covered, leading to treacherous driving conditions.

Winter Storm in NORTHERN PHILLIPS, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Northern Phillips County received 3 to 5 inches of snow from this storm system. Blowing and drifting snow created treacherous driving conditions throughout the day on the 8th.

Winter Storm in PETROLEUM, MONTANA
From 07-FEB-18 18:00:00 to 09-FEB-18 02:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Up to 9 inches of snow fell across the area from the night of the 7th and through the day on the 8th. Roads across the area, including Highway 200, were ice and snow covered with significant drifts.