Strong westerly flow continued into the middle of November over the Northern Rockies. H700 winds routinely exceeded 70 kts as surface pressure gradients assisted with mixing these winds to the surface. The strongest winds were initially observed over the Rocky Mountain Front, before expanding into the remainder of the region, when a strong Pacific trough moved through the region and a 982 mb surface low developed over the Canadian Prairies.  There were many reports of structural damage, power outages, and disruptions to travel, especially along the rocky Mountain Front.

High Wind in GALLATIN, MONTANA
From 16-NOV-21 04:00:00 to 16-NOV-21 04:00:00 (MST-7)
Magnitude: 54.00 MG
Reported by: Mesonet

La Crosse station at 6 NE Bozeman measured a 54 kt (62 mph) non-thunderstorm wind gust.

High Wind in EASTERN TETON, MONTANA
From 15-NOV-21 08:10:00 to 15-NOV-21 08:10:00 (MST-7)
Magnitude: 50.00 EG
Reported by: Public

Trees uprooted or snapped, 3 inch diameter branches damaged, and power poles blown down at 5 NNE Fairfield.

High Wind in MADISON, MONTANA
From 14-NOV-21 08:00:00 to 14-NOV-21 08:00:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Mesonet

BLM Virginia City station measured a 50 kt (58 mph) non-thunderstorm wind gust.

High Wind in SOUTHERN LEWIS AND CLARK, MONTANA
From 14-NOV-21 12:14:00 to 14-NOV-21 12:14:00 (MST-7)
Magnitude: 54.00 MG
Reported by: Department of Highways

MDT Roger's Pass station measured a 54 kt (62 mph) non-thunderstorm wind gust.

High Wind in FERGUS, MONTANA
From 14-NOV-21 12:15:00 to 14-NOV-21 12:15:00 (MST-7)
Magnitude: 51.00 EG
Reported by: AWOS

NBar Ranch AWOS measured a 51 kt (59 mph) non-thunderstorm wind gust.

High Wind in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 14-NOV-21 16:15:00 to 14-NOV-21 16:15:00 (MST-7)
Magnitude: 77.00 MG
Reported by: Mesonet

Dellwo station measured a 77 kt (89 mph) non-thunderstorm wind gust.

High Wind in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 14-NOV-21 14:23:00 to 14-NOV-21 14:23:00 (MST-7)
Magnitude: 83.00 MG
Reported by: Department of Highways

MDT Two Medicine Bridge station measured a 83 kt (96 mph) non-thunderstorm wind gust.

High Wind in EASTERN GLACIER, MONTANA
From 16-NOV-21 00:01:00 to 16-NOV-21 00:01:00 (MST-7)
Magnitude: 76.00 MG
Reported by: ASOS

KCTB measured a 76 kt (87 mph) non-thunderstorm wind gust.

High Wind in CASCADE, MONTANA
From 14-NOV-21 13:15:00 to 14-NOV-21 13:15:00 (MST-7)
Magnitude: 56.00 MG
Reported by: Mesonet

Cascade station MTM76 measured a 56 kt (64 mph) non-thunderstorm wind gust.

High Wind in TOOLE, MONTANA
From 14-NOV-21 20:53:00 to 14-NOV-21 20:53:00 (MST-7)
Magnitude: 68.00 MG
Reported by: Department of Highways

MDT Sweetgrass station measured a 68 kt (78 mph) non-thunderstorm wind gust.

High Wind in BLAINE, MONTANA
From 16-NOV-21 08:18:00 to 16-NOV-21 08:18:00 (MST-7)
Magnitude: 63.00 MG
Reported by: Mesonet

Fort Belknap station measured a 63 kt (72 mph) non-thunderstorm wind gust.

High Wind in LIBERTY, MONTANA
From 16-NOV-21 02:46:00 to 16-NOV-21 02:46:00 (MST-7)
Magnitude: 60.00 MG
Reported by: Mesonet

Chester station measured a 60 kt (69 mph) non-thunderstorm wind gust.

High Wind in BEAVERHEAD, MONTANA
From 15-NOV-21 20:16:00 to 15-NOV-21 20:16:00 (MST-7)
Magnitude: 58.00 MG
Reported by: Mesonet

Wise River station measured a 58 kt (67 mph) non-thunderstorm wind gust.

High Wind in HILL, MONTANA
From 16-NOV-21 01:46:00 to 16-NOV-21 01:46:00 (MST-7)
Magnitude: 58.00 MG
Reported by: Mesonet

Goldstone station measured a 58 kt (67 mph) non-thunderstorm wind gust.

High Wind in CHOUTEAU, MONTANA
From 16-NOV-21 02:15:00 to 16-NOV-21 02:15:00 (MST-7)
Magnitude: 58.00 MG
Reported by: Mesonet

Station at 3 SSW Loma measured a 58 kt (67 mph) non-thunderstorm wind gust.

High Wind in JUDITH BASIN, MONTANA
From 16-NOV-21 04:21:00 to 16-NOV-21 04:21:00 (MST-7)
Magnitude: 56.00 MG
Reported by: Department of Highways

MDT Geyser station measured a 56 kt (65 mph) non-thunderstorm wind gust.

High Wind in EASTERN PONDERA, MONTANA
From 16-NOV-21 00:45:00 to 16-NOV-21 00:45:00 (MST-7)
Magnitude: 56.00 MG
Reported by: Mesonet

Conrad station measured a 56 kt (64 mph) non-thunderstorm wind gust.

High Wind in MADISON, MONTANA
From 15-NOV-21 18:57:00 to 15-NOV-21 18:57:00 (MST-7)
Magnitude: 55.00 MG
Reported by: Department of Highways

MDT Norris Hill station measured a 55 kt (63 mph) non-thunderstorm wind gust.

High Wind in BROADWATER, MONTANA
From 15-NOV-21 23:54:00 to 15-NOV-21 23:54:00 (MST-7)
Magnitude: 54.00 MG
Reported by: Mesonet

Elkhorn Raws 8 W Townsend measured a 54 kt (62 mph) non-thunderstorm wind gust.