Discrete severe thunderstorms initially developed in the wake of a warm front in an area of strong instability over northwestern North Dakota during the late morning hours. The storms then started spreading southeast as a cold front pushed into the area. The initial storms were primarily a hail threat, with hail the size of golf balls reported in Williams and McKenzie counties. As the storms shifted southeast and became a line, the primary threat became strong wind gusts. By the time the storms reached the Jamestown area wind gusts were around 85 mph. This resulted in widespread tree and power line damage along with campers and semi-trucks overturning along Interstate 94 resulting in a brief closure of the interstate.

Hail in MCKENZIE, NORTH DAKOTA
From 02-SEP-19 11:02:00 to 02-SEP-19 11:05:00 (MST-7)
Location: JOHNSONS CORNER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BURKE, NORTH DAKOTA
From 02-SEP-19 11:05:00 to 02-SEP-19 11:08:00 (CST-6)
Location: BATTLEVIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCKENZIE, NORTH DAKOTA
From 02-SEP-19 10:10:00 to 02-SEP-19 10:13:00 (MST-7)
Location: ALEXANDER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in MCKENZIE, NORTH DAKOTA
From 02-SEP-19 10:11:00 to 02-SEP-19 10:12:00 (MST-7)
Location: ALEXANDER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WILLIAMS, NORTH DAKOTA
From 02-SEP-19 10:00:00 to 02-SEP-19 10:03:00 (CST-6)
Location: BONETRAILL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCKENZIE, NORTH DAKOTA
From 02-SEP-19 10:36:00 to 02-SEP-19 10:39:00 (MST-7)
Location: WATFORD CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WILLIAMS, NORTH DAKOTA
From 02-SEP-19 10:42:00 to 02-SEP-19 10:44:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCKENZIE, NORTH DAKOTA
From 02-SEP-19 10:55:00 to 02-SEP-19 10:58:00 (MST-7)
Location: JOHNSONS CORNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:35:00 to 02-SEP-19 15:37:00 (CST-6)
Location: MEDINA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A fire department official reported thunderstorm wind gusts of 60 mph.

Hail in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:50:00 to 02-SEP-19 15:53:00 (CST-6)
Location: BUCHANAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 02-SEP-19 15:51:00 to 02-SEP-19 15:54:00 (CST-6)
Location: TAPPEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Hail in LA MOURE, NORTH DAKOTA
From 02-SEP-19 16:30:00 to 02-SEP-19 16:33:00 (CST-6)
Location: JUD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:54:00 to 02-SEP-19 15:57:00 (CST-6)
Location: ELDRIDGE
Magnitude: 70.00 MG
Property damage: 80.00K
Crop damage: 0.00K
Reported by: Mesonet

A semi-truck and a camper were overturned by the strong thunderstorm wind gusts.

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:46:00 to 02-SEP-19 15:48:00 (CST-6)
Location: (JMS)JAMESTOWN MUNI
Magnitude: 74.00 MG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple vehicles were overturned on Interstate 94 in the Jamestown area including semi-trucks and campers. This led to Interstate 94 being closed due to debris on the roadway. Tree branches breaking and falling on power lines led to multiple fire reports, along with widespread power outages. Also, many roadways were blocked by fallen trees and branches. A brick wall that was being constructed as part of a school expansion project collapsed as a result of the strong winds.

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 02-SEP-19 12:52:00 to 02-SEP-19 12:55:00 (CST-6)
Location: RAUB
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Hail in MCLEAN, NORTH DAKOTA
From 02-SEP-19 14:00:00 to 02-SEP-19 14:03:00 (CST-6)
Location: FALKIRK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in SHERIDAN, NORTH DAKOTA
From 02-SEP-19 14:05:00 to 02-SEP-19 14:08:00 (CST-6)
Location: DENHOFF
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SHERIDAN, NORTH DAKOTA
From 02-SEP-19 14:10:00 to 02-SEP-19 14:13:00 (CST-6)
Location: MARTIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WELLS, NORTH DAKOTA
From 02-SEP-19 14:26:00 to 02-SEP-19 14:28:00 (CST-6)
Location: CHASELEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported thunderstorm wind gusts of 60 mph.

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 02-SEP-19 14:45:00 to 02-SEP-19 14:48:00 (CST-6)
Location: ROBINSON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Hail in FOSTER, NORTH DAKOTA
From 02-SEP-19 15:00:00 to 02-SEP-19 15:03:00 (CST-6)
Location: CARRINGTON
Magnitude: 1.25 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Cars were dented from the hail.

Hail in FOSTER, NORTH DAKOTA
From 02-SEP-19 15:02:00 to 02-SEP-19 15:05:00 (CST-6)
Location: CARRINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:05:00 to 02-SEP-19 15:08:00 (CST-6)
Location: WOODWORTH
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:20:00 to 02-SEP-19 15:22:00 (CST-6)
Location: EDMUNDS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 02-SEP-19 15:32:00 to 02-SEP-19 15:34:00 (CST-6)
Location: COURTENAY
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet