A Pacific cold front resulted in a period of showers and thunderstorms that produced severe caliber winds across most of the forecast area August 29th and into the 30th, initially across western and southwestern areas, spreading northeastward through the overnight period. Behind the Pacific front, zonal flow was sufficiently strong to result in isolated instances of High Wind Warning criteria gusts across the plains of North-central Montana.

Thunderstorm Wind in BEAVERHEAD, MONTANA
From 29-AUG-23 16:47:00 to 29-AUG-23 16:47:00 (MST-7)
Location: GRANT
Magnitude: 51.00 MG
Reported by: RAWS

Measured by RAWS site brrm8 near Brenner.

Thunderstorm Wind in BEAVERHEAD, MONTANA
From 29-AUG-23 18:36:00 to 29-AUG-23 18:36:00 (MST-7)
Location: LAKEVIEW
Magnitude: 64.00 MG
Reported by: RAWS

Peak hourly gust as measured by RAWS station RRDM8 near Red Rock. Time of occurrence based on radar.

Thunderstorm Wind in GALLATIN, MONTANA
From 29-AUG-23 19:55:00 to 29-AUG-23 19:55:00 (MST-7)
Location: PATTERSON
Magnitude: 53.00 MG
Reported by: Mesonet

Measured via Ambient Weather site.

Thunderstorm Wind in GALLATIN, MONTANA
From 29-AUG-23 19:47:00 to 29-AUG-23 19:47:00 (MST-7)
Location: BOZEMAN HOT SPGS
Magnitude: 51.00 MG
Reported by: Mesonet

Measured via Ambient Weather site.

Thunderstorm Wind in GALLATIN, MONTANA
From 29-AUG-23 19:52:00 to 29-AUG-23 20:08:00 (MST-7)
Location: BELGRADE
Magnitude: 52.00 MG
Reported by: ASOS

Prolonged severe convective wind event recorded at KBZN ASOS. Severe wind gusts lasted for nearly 20 minutes.

Thunderstorm Wind in PONDERA, MONTANA
From 29-AUG-23 18:58:00 to 29-AUG-23 18:58:00 (MST-7)
Location: VALIER
Magnitude: 55.00 MG
Reported by: Mesonet

Measured via Ambient Weather.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 17:34:00 to 29-AUG-23 17:34:00 (MST-7)
Location: FAIRFIELD
Magnitude: 57.00 MG
Reported by: Mesonet

Ambient Weather site measured a sustained mind of 58mph with a peak gust of 66 mph.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 17:37:00 to 29-AUG-23 17:37:00 (MST-7)
Location: EASTHAM JCT
Magnitude: 52.00 MG
Reported by: AWOS

Measured via military AWOS station K1FM Foxtrot.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 18:15:00 to 29-AUG-23 18:15:00 (MST-7)
Location: AGAWAM
Magnitude: 54.00 MG
Reported by: Mesonet

Measured via site RICMT near Rice Ridge.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 18:22:00 to 29-AUG-23 18:22:00 (MST-7)
Location: PENDROY
Magnitude: 50.00 MG
Reported by: Mesonet

Measured via station MTPND near Pendroy.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 17:59:00 to 29-AUG-23 17:59:00 (MST-7)
Location: BOLE
Magnitude: 55.00 MG
Reported by: AWOS

Measured via military AWOS station K1HM located six miles north/northeast of Fairfield.

Thunderstorm Wind in GALLATIN, MONTANA
From 29-AUG-23 19:55:00 to 29-AUG-23 19:55:00 (MST-7)
Location: BOZEMAN
Magnitude: 56.00 MG
Reported by: Mesonet

Two sensors along Triple Tree Road, and located about 1/4 mile apart from each other, recorded gusts of 65 mph.

Thunderstorm Wind in HILL, MONTANA
From 29-AUG-23 23:26:00 to 29-AUG-23 23:26:00 (MST-7)
Location: (HVR)HAVRE CITY-CO A
Magnitude: 55.00 MG
Reported by: ASOS

Measured by Havre Airport ASOS station khvr.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 18:15:00 to 29-AUG-23 18:15:00 (MST-7)
Location: KOYL
Magnitude: 58.00 MG
Reported by: COOP Observer

Peak gust measured by COOP observer.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-23 17:45:00 to 29-AUG-23 17:45:00 (MST-7)
Location: BYNUM
Magnitude: 50.00 MG
Reported by: Trained Spotter

Measured gust reported by spotter. Also reported the wind was strong enough to move heavy furniture across the yard.

Thunderstorm Wind in LIBERTY, MONTANA
From 30-AUG-23 00:04:00 to 30-AUG-23 00:04:00 (MST-7)
Location: ALMA
Magnitude: 51.00 MG
Reported by: Mesonet

Measured by Ambient Weather site.

Thunderstorm Wind in GALLATIN, MONTANA
From 29-AUG-23 19:59:00 to 29-AUG-23 19:59:00 (MST-7)
Location: AMSTERDAM ARPT
Magnitude: 55.00 MG
Reported by: Mesonet

Peak gust measured by Ambient Weather site.

High Wind in EASTERN PONDERA AND EASTERN TETON, MONTANA
From 30-AUG-23 09:11:00 to 30-AUG-23 09:11:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An ambient weather sensor 4 miles north of Fairfield measured a 59 mph gust.