A strong upper level jet streak moved over North-Central Montana, bringing powerful winds to the area, especially along the Rocky Mountain Front. Wind gusts along the Rocky Mountain Front exceeded 100 mph in some locations, particularly at Deep Creek and at the Two Medicine Bridge along US 2. Wind gusts in excess of 60 mph spread across the plains, with most of North-Central Montana seeing High Wind Criteria. Of note, several fires occurred during this wind event. More information on these fires are under the episode titled Wind-fueled fires sweep across the plains.

High Wind in JEFFERSON, MONTANA
From 01-DEC-21 07:45:00 to 01-DEC-21 07:45:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station jvwm, which is 5.4 miles north of Waterloo, reports wind gust of 60 mph. This appears to be an isolated gust.

High Wind in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 01-DEC-21 08:29:00 to 01-DEC-21 08:29:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Northwest Energy meson 10 miles west of Simms reports a wind gust of 64 mph multiple times through the day.

High Wind in LIBERTY, MONTANA
From 01-DEC-21 05:30:00 to 01-DEC-21 08:00:00 (MST-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station gw0625 measures peak wing gust of 62 mph. Multiple other stations gusted over 58 mph through the period indicated.

High Wind in EASTERN PONDERA, MONTANA
From 01-DEC-21 15:15:00 to 01-DEC-21 15:15:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station mtm05 arc-wtri near Conrad MT reports wind gust of 64 mph.

High Wind in CASCADE, MONTANA
From 01-DEC-21 11:53:00 to 01-DEC-21 11:53:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Great Falls ASOS measures wind gust of 71 mph.

High Wind in EASTERN TETON, MONTANA
From 01-DEC-21 11:04:00 to 01-DEC-21 11:04:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Mesonet

Mesonet station klette reports a wind gust of 58 mph. In addition, the public reported a house with significant roof damage west of Power, MT around 10 AM.

High Wind in TOOLE, MONTANA
From 01-DEC-21 02:30:00 to 01-DEC-21 12:30:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Shelby airport reports wind gust of 71 mph at noon. Other reports of high winds were received from across the county in the time indicated.

High Wind in HILL, MONTANA
From 01-DEC-21 15:00:00 to 01-DEC-21 15:00:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reports wind gust of 61 mph.

High Wind in BLAINE, MONTANA
From 01-DEC-21 14:15:00 to 01-DEC-21 14:15:00 (MST-7)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop Observer reports wind gust of 67 mph.

High Wind in CHOUTEAU, MONTANA
From 01-DEC-21 04:00:00 to 01-DEC-21 04:00:00 (MST-7)
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Wind gust of 81 mph via Facebook. Other locations in the area gusted over to or over 63 mph.

High Wind in FERGUS, MONTANA
From 01-DEC-21 13:55:00 to 01-DEC-21 13:55:00 (MST-7)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

AWOS station at N Bar Ranch reports wind gust of 75 mph.

High Wind in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 01-DEC-21 05:23:00 to 01-DEC-21 05:23:00 (MST-7)
Magnitude: 89.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station at Two Medicine Bridge (mtbrn) measures wind gust of 108 mph.

High Wind in EASTERN GLACIER, MONTANA
From 01-DEC-21 08:56:00 to 01-DEC-21 08:56:00 (MST-7)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

First LSR of High Winds. Winds would eventually reach 77 mph around 10AM.

High Wind in JUDITH BASIN, MONTANA
From 01-DEC-21 11:39:00 to 01-DEC-21 11:39:00 (MST-7)
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

MT DOT sensor at Geyser (mtgys) reports wind gust of 66 mph.

High Wind in SOUTHERN LEWIS AND CLARK, MONTANA
From 01-DEC-21 06:40:00 to 01-DEC-21 06:40:00 (MST-7)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

MT DOT sensor at MacDonanld Pass records wind gust of 67 mph.