On January 19 and 20, an Arctic front and and Pacific storm system collided over Western Montana. Heavy snowfall, whiteout conditions, and dangerous wind chills were observed at several locations.

Cold/Wind Chill in POTOMAC / SEELEY LAKE REGION, MONTANA
From 20-JAN-08 04:53:00 to 21-JAN-08 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Automated weather stations at Pistol Creek and Bearmouth reported wind chills of minus 21 and 20 degrees, respectively.

Winter Storm in KOOTENAI/CABINET REGION, MONTANA
From 19-JAN-08 16:40:00 to 20-JAN-08 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Severe weather spotters in Libby and Troy reported 7.5 and 6.5 inches of new snowfall accumulations, respectively, from this event. In addition, gusty winds between 23 and 34 mph were reported in the valley locations.

Cold/Wind Chill in WEST GLACIER REGION, MONTANA
From 20-JAN-08 04:53:00 to 21-JAN-08 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills to minus 23 degrees were observed at Essex at 01:06 a.m. on January 21. Wind chills to minus 26 degrees were observed at Fielding at 08:42 a.m. on January 21.

Cold/Wind Chill in BUTTE / BLACKFOOT REGION, MONTANA
From 20-JAN-08 04:53:00 to 21-JAN-08 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Automated weather stations at Avon and Helmville reported wind chills of minus 20 degrees.

Winter Storm in LOWER CLARK FORK REGION, MONTANA
From 19-JAN-08 14:00:00 to 20-JAN-08 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The weather observation site at Lookout Pass and a severe weather spotter in Thompson Falls reported 6 inches of new snow. Winds across the Lower Clark Fork Region gusted between 27 and 35 mph.

Winter Storm in POTOMAC / SEELEY LAKE REGION, MONTANA
From 20-JAN-08 00:00:00 to 20-JAN-08 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Weather spotters in Seeley Lake and Condon reported between 8 and 12 inches of new snow. Wind gusts to 39 mph were observed at the automated weather station at Pistol Creek.

Blizzard in MISSOULA / BITTERROOT VALLEYS, MONTANA
From 20-JAN-08 00:45:00 to 20-JAN-08 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Montana Department of Transportation declared Interstate 90 emergency travel only due to blizzard conditions. Blizzard conditions were observed at the mouth of Hellgate Canyon by several NWS employees where an automated wind sensor recorded a wind gust up to 70 mph. In addition, several trees were reported to have been blown down by wind across Missoula. One large tree was blown down onto a NWS employee's house in the University District. Wind gusts to 60 mph were estimated in this area with poor visibility in blowing snow.

Blizzard in POTOMAC / SEELEY LAKE REGION, MONTANA
From 20-JAN-08 00:00:00 to 20-JAN-08 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Montana Department of Transportation declared Highway 200 from Bonner to Greenough emergency travel only due to poor visibility in snow and blowing snow. Blizzard conditions were observed in areas along this route.

Cold/Wind Chill in BITTERROOT / SAPPHIRE MOUNTAINS, MONTANA
From 20-JAN-08 22:45:00 to 21-JAN-08 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills to minus 22 degrees were observed at Tepee Point at 02:09 p.m. on January 21. In addition, Lost Trail Pass Ski Resort was closed due to dangerous wind chills.

Winter Storm in BUTTE / BLACKFOOT REGION, MONTANA
From 19-JAN-08 23:42:00 to 20-JAN-08 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Severe weather spotters in Ovando reported 6.5 inches of new snow and whiteout conditions during this event. Six inches of new snow was reported in Anaconda. Frequent wind gusts to 37 mph were observed along the Interstate 90 corridor near Deer Lodge.

Winter Storm in FLATHEAD/MISSION VALLEYS, MONTANA
From 19-JAN-08 11:00:00 to 20-JAN-08 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Weather spotters in Kalispell reported between 6 and 8 inches of new snow. 10 inches of new snow was reported 10 miles north of Bigfork. Winds across the Flathead valley frequently gusted between 33 and 46 mph.