A moist, mid-level occluded front interacted with arctic air entrenched across western Montana and brought periods of heavy snow, gusty winds and sub-zero wind chills.

Winter Weather in KOOTENAI/CABINET REGION, MONTANA
From 07-NOV-22 03:24:00 to 07-NOV-22 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Snow showers brought several inches of snow to the region, including 3.1 inches in Kila and 2.1 inches in Marion. The slick roads contributed to two fatalities on US-2 west of Libby at 1423MST in the afternoon.

Cold/Wind Chill in WEST GLACIER REGION, MONTANA
From 06-NOV-22 19:00:00 to 07-NOV-22 16:00:00 (MST-7)
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills fell as low as 16 below zero at Marias Pass, but in the higher elevations wind chill values were as low as 43 below in Glacier National Park. Strong wind gusts close to 50 mph caused tree damage and power outages in the northern Whitefish Lake area and also near Big Mountain. Mountain top easterly arctic winds were very strong over the Whitefish and Swan Ranges and also in Glacier. Garden Wall saw gusts to 72 mph while the top of Mount Aeneas at 7,120 feet, gusted as high as 73 mph during the event.

Winter Weather in FLATHEAD/MISSION VALLEYS, MONTANA
From 07-NOV-22 03:00:00 to 07-NOV-22 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Strong gusty northeast winds between 40 and 50 mph and wind chills down to 3 below occurred between Glacier Park Int. Airport and Badrock Canyon. The winds limited the snowfall in the eastern Flathead Valley, but up to 2.5 inches fell northwest of the City of Kalispell. Between 2 and 4 inches of snow fell in the Mission Valley, causing slick roads. Sustained northeast winds of 41 mph occurred at Yellow Bay Point. Power outages from the strong winds occurred in the northern Flathead Valley.

Winter Weather in LOWER CLARK FORK REGION, MONTANA
From 07-NOV-22 01:43:00 to 07-NOV-22 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Between 1 to 3 inches of snow caused slick conditions along Highway 200 and Interstate 90. Heavy snow showers brought low visibility from 1000 to 1300MST to Evaro Hill and I-90 between Tarkio and Missoula.

Winter Weather in MISSOULA / BITTERROOT VALLEYS, MONTANA
From 07-NOV-22 07:20:00 to 07-NOV-22 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Between 2 and 4 inches of snow fell in the Bitterroot Valley and to 1.5 inches in the southern Missoula Valley. The snow fell at moderate to heavy rates at times with showers and squalls. The snow caused slick roads with a few accidents in the region.

Winter Weather in MISSOULA / BITTERROOT VALLEYS, MONTANA
From 07-NOV-22 09:50:00 to 07-NOV-22 12:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Snow Squall Heavy snow combined with gusty east winds sustained at 20 mph with gusts to 30 mph caused low visibility, and slick roads which contributed to several accidents in the Missoula and Bitterroot Valleys. The Missoula Police department issued a MEANS alert due to icy roads and multiple crashes at 1227MST.

Winter Weather in POTOMAC / SEELEY LAKE REGION, MONTANA
From 07-NOV-22 10:00:00 to 07-NOV-22 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Between 1 and 3 inches of snow fell from Clinton to Seeley Lake and Lindbergh Lake which caused slick roads. Heavy snow showers impacted the region from 1040MST to 1500MST.

Winter Weather in BUTTE / BLACKFOOT REGION, MONTANA
From 07-NOV-22 03:00:00 to 07-NOV-22 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The arctic cold front pushed west over the Divide by late morning on the 6th, and the east winds became very strong with frequent gusts over 50 mph in the Helmville area from 1800MST Nov. 6 to 1200MST Nov. 7 (Peak gust was 59 mph). Snow showers brought slick roads to the region with snow amounts ranging from a 1 to to 4 inches.