A potent Pacific storm system emerging from the northern Rockies combined with an arctic air mass from Canada to develop into a winter storm over northeast montana with Blizzard conditions developing for some locations.

Winter Storm in CENTRAL AND SOUTHERN VALLEY, MONTANA
From 10-JAN-13 19:00:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Several snowfall reports across the area including the NWS office in Glasgow ranged from 6 to 8 inches with 8.5 inches being reported at Hinsdale.

Winter Storm in GARFIELD, MONTANA
From 10-JAN-13 18:00:00 to 11-JAN-13 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported 8 inches of snow in Brusett.

Winter Storm in DANIELS, MONTANA
From 10-JAN-13 22:00:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Cooperative observer located 3.8 miles NW of Scobey reported 8 inches of snow.

Winter Storm in NORTHERN PHILLIPS, MONTANA
From 10-JAN-13 07:00:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Border agents at the Port of Morgan border station reported 9 inches of snow.

Winter Storm in PETROLEUM, MONTANA
From 10-JAN-13 18:00:00 to 11-JAN-13 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Petroleum County sheriff reported 6 inches of snow in Winnett.

Winter Storm in LITTLE ROCKY MOUNTAINS, MONTANA
From 10-JAN-13 04:00:00 to 11-JAN-13 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Public and cooperative observers reported 6 to 7 inches of snow.

Winter Storm in SHERIDAN, MONTANA
From 11-JAN-13 02:00:00 to 11-JAN-13 19:40:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow reports of at least 7 inches were common with a maximum of 9.5 inches reported at the Port of Raymond border station.

Blizzard in DANIELS, MONTANA
From 11-JAN-13 08:43:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported white-out conditions and visibility as low as 100 yards between Peerless and Scobey in blowing snow.

Blizzard in NORTHERN VALLEY, MONTANA
From 11-JAN-13 11:35:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Cooperative observer in Baylor reported near white-out conditions with visibility around 100 yards.

Blizzard in SHERIDAN, MONTANA
From 11-JAN-13 10:06:00 to 11-JAN-13 19:40:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Reports of blizzard conditions were common across the county. Trained spotter in Reserve reported the worst blizzard conditions they've ever seen with visibility as low as 50 yards.

Blizzard in WESTERN ROOSEVELT, MONTANA
From 11-JAN-13 13:28:00 to 11-JAN-13 16:58:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter in Poplar reported blizzard conditions with visibility around 500 feet, and worse conditions outside of town.  Travel along US Highway 2 restricted to emergency traffic only.

Blizzard in EASTERN ROOSEVELT, MONTANA
From 11-JAN-13 12:01:00 to 11-JAN-13 21:24:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported blizzard conditions with visibility as low as 100 yards and snow drifts up to 5 feet high.  Travel along US Highway 2 restricted to emergency traffic only.

Winter Storm in CENTRAL AND SE PHILLIPS, MONTANA
From 10-JAN-13 07:00:00 to 11-JAN-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snow fall reports of 6 to 7 inches were common across the area with 7.5 inches reported by the cooperative observer in Malta.