An approaching low pressure system from the west and unstable atmosphere combined over Montana to produce severe thunderstorms which eventually clustered together and moved through eastern Montana with very strong and damaging winds.

Thunderstorm Wind in VALLEY, MONTANA
From 14-JUL-19 20:20:00 to 14-JUL-19 20:20:00 (MST-7)
Location: SAINT MARIE
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 75 mph wind gust was measured at the Saint Marie Mesonet MARCO site (07MT).

Thunderstorm Wind in PRAIRIE, MONTANA
From 14-JUL-19 20:42:00 to 14-JUL-19 20:42:00 (MST-7)
Location: MC CLOUD
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 58 mph wind gusts.

Thunderstorm Wind in DAWSON, MONTANA
From 14-JUL-19 20:53:00 to 14-JUL-19 20:53:00 (MST-7)
Location: LINDSAY DIVIDE DOT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A 68 mph wind gust was measured at the Lindsay Divide MT-200 DOT site (MTLND).

Thunderstorm Wind in DAWSON, MONTANA
From 14-JUL-19 21:17:00 to 14-JUL-19 21:17:00 (MST-7)
Location: GLENDIVE DAWSON ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 62 mph wind gust was measured at the the Glendive Airport ASOS (KGDV).

Thunderstorm Wind in DAWSON, MONTANA
From 14-JUL-19 22:08:00 to 14-JUL-19 22:08:00 (MST-7)
Location: BEAVER HILL DOT
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A 75 mph wind gust was measured at the Beaver Hill I-94 DOT site (MTBVR).

Thunderstorm Wind in PETROLEUM, MONTANA
From 14-JUL-19 18:06:00 to 14-JUL-19 18:06:00 (MST-7)
Location: WINNETT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported wind damage in the town of Winnett, including power lines and trees blown down, and a roof ripped off a house.  Time estimated by radar.

Thunderstorm Wind in PETROLEUM, MONTANA
From 14-JUL-19 18:03:00 to 14-JUL-19 18:03:00 (MST-7)
Location: DRY BLOOD CREEK RAWS
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter measured a 63 mph wind gust.

Thunderstorm Wind in PETROLEUM, MONTANA
From 14-JUL-19 18:30:00 to 14-JUL-19 18:30:00 (MST-7)
Location: WINNETT
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 78 mph wind gust was measured at the Winnett Handar site (GGWWT).

Thunderstorm Wind in VALLEY, MONTANA
From 14-JUL-19 19:40:00 to 14-JUL-19 19:40:00 (MST-7)
Location: KING COULEE RAWS
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A 63 mph wind gust was measured at the King Coulee RAWS site (KIGM8).

Thunderstorm Wind in GARFIELD, MONTANA
From 14-JUL-19 18:50:00 to 14-JUL-19 18:50:00 (MST-7)
Location: SOUTH SAWMILL RAWS
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A 68 mph wind gust was measured at the South Sawmill Creek RAWS site (SSMM8).

Thunderstorm Wind in GARFIELD, MONTANA
From 14-JUL-19 18:40:00 to 14-JUL-19 18:40:00 (MST-7)
Location: LUFBOROUGH HILL DOT
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A 74 mph wind gust was measured at the Lufborough Hill MT-200 DOT site (MTLUF).