The combination of instability and lift from terrain aided in development of isolated to scattered thunderstorms over a few afternoons.

Thunderstorm Wind in CHOUTEAU, MONTANA
From 29-AUG-13 21:36:00 to 29-AUG-13 21:36:00 (MST-7)
Location: BIG SANDY
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 60KT (69MPH) were reported 1 mile NE of Big Sandy, MT.

Thunderstorm Wind in HILL, MONTANA
From 29-AUG-13 21:40:00 to 29-AUG-13 22:00:00 (MST-7)
Location: (HVR)HAVRE CITY-CO A
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High winds measuring 62KT (71MPH) were reported 4 miles W of Havre, MT.

Thunderstorm Wind in BLAINE, MONTANA
From 29-AUG-13 20:45:00 to 29-AUG-13 20:45:00 (MST-7)
Location: HARLEM
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 57KT (66MPH) were reported 13 miles S of Harlem, MT.

Thunderstorm Wind in LIBERTY, MONTANA
From 29-AUG-13 20:36:00 to 29-AUG-13 20:36:00 (MST-7)
Location: CHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

High winds estimated at 50KT (58MPH) were reported to have damaged an airplane and a hangar in Chester, MT.

Thunderstorm Wind in TOOLE, MONTANA
From 29-AUG-13 19:11:00 to 29-AUG-13 19:11:00 (MST-7)
Location: SUNBURST
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 51KT (59MPH) were reported 20 miles E of Sunburst, MT.

Thunderstorm Wind in TOOLE, MONTANA
From 29-AUG-13 19:29:00 to 29-AUG-13 19:29:00 (MST-7)
Location: SHELBY
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 51KT (59MPH) were reported 1 mile N of Shelby, MT.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-13 19:42:00 to 29-AUG-13 19:42:00 (MST-7)
Location: CHOTEAU
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 56KT (65MPH) were reported 10 miles SW of Choteau, MT.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-13 19:59:00 to 29-AUG-13 19:59:00 (MST-7)
Location: PENDROY
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High winds measuring 50KT (58MPH) were reported 2 miles NW of Pendroy, MT.

Thunderstorm Wind in TETON, MONTANA
From 29-AUG-13 20:10:00 to 29-AUG-13 20:10:00 (MST-7)
Location: DUTTON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 52KT (60MPH) were reported 6 miles WNW of Dutton, MT.

Thunderstorm Wind in LIBERTY, MONTANA
From 29-AUG-13 20:25:00 to 29-AUG-13 20:25:00 (MST-7)
Location: CHESTER
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 62KT (71MPH) were reported 2 miles E of Chester, MT.

Thunderstorm Wind in LIBERTY, MONTANA
From 29-AUG-13 20:32:00 to 29-AUG-13 20:32:00 (MST-7)
Location: CHESTER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 52KT (60MPH) were reported at the Chester, MT courthouse.

Thunderstorm Wind in CHOUTEAU, MONTANA
From 29-AUG-13 21:21:00 to 29-AUG-13 21:21:00 (MST-7)
Location: BIG SANDY
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 58KT (67MPH) were reported 13 miles W of Big Sandy, MT.

Thunderstorm Wind in CHOUTEAU, MONTANA
From 29-AUG-13 21:22:00 to 29-AUG-13 21:22:00 (MST-7)
Location: LOMA
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High winds measuring 52KT (60MPH) were reported 1 mile N of Loma, MT.

Thunderstorm Wind in CASCADE, MONTANA
From 28-AUG-13 15:30:00 to 28-AUG-13 15:30:00 (MST-7)
Location: GREAT FALLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

High winds estimated at 50KT (58MPH) were reported as the cause for multiple power line breakages across Great Falls.

Thunderstorm Wind in CHOUTEAU, MONTANA
From 30-AUG-13 21:36:00 to 30-AUG-13 21:36:00 (MST-7)
Location: BIG SANDY
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds measuring 60KT (69MPH) were reported 1 mile SE of Big Sandy.

Thunderstorm Wind in BROADWATER, MONTANA
From 29-AUG-13 20:15:00 to 29-AUG-13 20:15:00 (MST-7)
Location: TOWNSEND
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

High winds measuring 50KT (58MPH) were reported 3 miles W of Townsend, MT.