Widespread wind damage occurred with these severe thunderstorms. Strong thunderstorms developed over western North Dakota in the late evening, and continued to push east through the overnight hours ahead and south of a deep upper level low. Damaging wind gusts and large hail developed in a moisture rich atmosphere with moderate deep layer shear. The greatest damage occurred in the southwest part of the state from Golden Valley County, across Billings County, and through Stark County, where winds estimated close to 100 mph developed along the leading edge of the storms. Reports of strong winds continued into central North Dakota. The largest hail of one-inch in diameter was reported over Golden Valley and Billings counties.

Thunderstorm Wind in WARD, NORTH DAKOTA
From 06-SEP-15 00:55:00 to 06-SEP-15 00:57:00 (CST-6)
Location: RYDER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 06-SEP-15 00:42:00 to 06-SEP-15 00:44:00 (CST-6)
Location: PARSHALL
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 05-SEP-15 22:00:00 to 05-SEP-15 22:03:00 (MST-7)
Location: GRASSY BUTTE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The strong thunderstorm wind gust speed was estimated by a COOP observer.

Hail in BILLINGS, NORTH DAKOTA
From 05-SEP-15 21:45:00 to 05-SEP-15 21:50:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GOLDEN VALLEY, NORTH DAKOTA
From 05-SEP-15 20:49:00 to 05-SEP-15 20:52:00 (MST-7)
Location: SENTINEL BUTTE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in STARK, NORTH DAKOTA
From 05-SEP-15 22:00:00 to 05-SEP-15 22:10:00 (MST-7)
Location: BELFIELD
Magnitude: 78.00 EG
Property damage: 125.00K
Crop damage: 50.00K
Reported by: Public

Significant damage was done from extreme winds on the leading edge of the line of thunderstorms. Outbuildings were damaged, trees were snapped and some uprooted. The heaviest damage was about 6 miles northeast of Belfield.

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 06-SEP-15 01:26:00 to 06-SEP-15 01:29:00 (CST-6)
Location: UNDERWOOD
Magnitude: 59.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A partially build garage was damaged by the strong winds.

Thunderstorm Wind in GOLDEN VALLEY, NORTH DAKOTA
From 05-SEP-15 21:10:00 to 05-SEP-15 21:25:00 (MST-7)
Location: GOLVA
Magnitude: 86.00 EG
Property damage: 450.00K
Crop damage: 250.00K
Reported by: Utility Company

Significant and severe damage was done from extreme winds on the leading edge of the line of thunderstorms. Twenty-four consecutive wooden power poles were snapped, brand new storage bins were destroyed, trailers and a camper were flipped, and outbuildings were damaged. Nearly 100 hay bales were rolled, most of them destroyed. There was significant crop damage.

Thunderstorm Wind in BILLINGS, NORTH DAKOTA
From 05-SEP-15 21:45:00 to 05-SEP-15 22:00:00 (MST-7)
Location: FRYBURG
Magnitude: 82.00 EG
Property damage: 175.00K
Crop damage: 100.00K
Reported by: Public

Significant and severe damage was done from extreme winds on the leading edge of the line of thunderstorms. Outbuildings and vehicles badly damaged, some destroyed.