The weather pattern across the region directed strong upper-level winds and a marginally unstable atmosphere into an area of plentiful moisture that sustained multiple severe thunderstorms through the afternoon and evening hours.

Hail in PRAIRIE, MONTANA
From 22-JUL-21 12:15:00 to 22-JUL-21 12:15:00 (MST-7)
Location: MILDRED
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported ping pong size hail.  Time estimated from radar.

Heavy Rain in PRAIRIE, MONTANA
From 22-JUL-21 12:15:00 to 22-JUL-21 12:15:00 (MST-7)
Location: MILDRED
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported 2 inches of rain fell during a two hour period.  The rain came in two waves with most of it falling during the first 30 minutes.  Time estimated from radar.

Thunderstorm Wind in DAWSON, MONTANA
From 22-JUL-21 12:53:00 to 22-JUL-21 12:53:00 (MST-7)
Location: BEAVER HILL DOT
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 73mph was reported at the Mesonet Station MTBVR.  This was higher than a previous wind gust reported earlier.

Thunderstorm Wind in DAWSON, MONTANA
From 22-JUL-21 12:41:00 to 22-JUL-21 12:41:00 (MST-7)
Location: BEAVER HILL DOT
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet Station MTBVR measured a wind gust of 69mph.

Thunderstorm Wind in PRAIRIE, MONTANA
From 22-JUL-21 12:15:00 to 22-JUL-21 12:15:00 (MST-7)
Location: MILDRED
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Multiple well established cottonwood trees on a property, ranging from 30 to 40 feet tall and 1 to 3 feet in diameter were uprooted or blown over.  Estimated wind was 70mph.

Thunderstorm Wind in MCCONE, MONTANA
From 22-JUL-21 17:35:00 to 22-JUL-21 17:35:00 (MST-7)
Location: FT PECK LAKE HANDAR
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Mesonet Station GGWFP at Fort Peck dam reported a 58mph wind gust.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 22-JUL-21 18:32:00 to 22-JUL-21 18:32:00 (MST-7)
Location: WOLF PT INTL AIRPORT(KOLF)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 58mph wind gust was measured at the Wolf Point Airport ASOS site.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 22-JUL-21 18:48:00 to 22-JUL-21 18:48:00 (MST-7)
Location: MCDONALDS DOT
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station MTMCD located on Montana Highway 13, mile marker 125.5, measured a 75mph wind gust.

Thunderstorm Wind in DANIELS, MONTANA
From 22-JUL-21 18:55:00 to 22-JUL-21 18:55:00 (MST-7)
Location: SCOBEY
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported, via Facebook, 65mph winds.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 22-JUL-21 19:00:00 to 22-JUL-21 19:00:00 (MST-7)
Location: POPLAR ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A 58mph wind gust was measured at the Poplar Airport AWOS KPO1 site.

Thunderstorm Wind in DANIELS, MONTANA
From 22-JUL-21 19:19:00 to 22-JUL-21 19:19:00 (MST-7)
Location: NAVAJO
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site MTRED located on Montana state highway 5 near Navajo reported a wind gust of 67mph.

Thunderstorm Wind in VALLEY, MONTANA
From 22-JUL-21 17:40:00 to 22-JUL-21 17:40:00 (MST-7)
Location: GLASGOW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported, via Facebook, shingles blown off the roof.  Estimated wind speed was 60mph.

Thunderstorm Wind in VALLEY, MONTANA
From 22-JUL-21 17:45:00 to 22-JUL-21 17:45:00 (MST-7)
Location: GLASGOW
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A NWS Employee reported tree damage.  Estimated wind was speed 70mph.  The time was estimated.

Thunderstorm Wind in VALLEY, MONTANA
From 22-JUL-21 17:45:00 to 22-JUL-21 17:45:00 (MST-7)
Location: GLASGOW INTL AIRPORT (KGGW)
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported, via Facebook, a 20 year pine tree had fallen over.  The time was estimated.

Thunderstorm Wind in VALLEY, MONTANA
From 22-JUL-21 17:41:00 to 22-JUL-21 17:41:00 (MST-7)
Location: GLASGOW INTL AIRPORT (KGGW)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 69mph wind gust was measured at the Glasgow Airport ASOS site.