Just after sunrise, a line of thunderstorms was located around the Jamestown, North Dakota, area. This line quickly took on a bowing structure and tracked from Jamestown down into far southeast North Dakota. These storms produced some large hail, but mainly strong wind gusts.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 06:30:00 to 18-AUG-16 06:30:00 (CST-6)
Location: ECKELSON
Magnitude: 70.00 EG
Reported by: Storm Chaser

A wide swath of damaging winds and hail raked across northern Hemen Township. Wind driven hail stripped maturing bean and corn fields down to stumps. Trees were broken down, steel grain bins were dented in, and roofing materials were torn off of farm outbuildings.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 06:50:00 to 18-AUG-16 06:50:00 (CST-6)
Location: VALLEY CITY
Magnitude: 51.00 MG
Reported by: AWOS

The wind gust was measured at the Valley City airport.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 18-AUG-16 08:25:00 to 18-AUG-16 08:25:00 (CST-6)
Location: HANKINSON
Magnitude: 52.00 EG
Reported by: NWS Storm Survey

Several large tree branches and limbs were blown down in shelterbelts along Interstate 29 between mile point eight and mile point two, in southern Waldo and northern Greendale townships.

Hail in RANSOM, NORTH DAKOTA
From 18-AUG-16 07:33:00 to 18-AUG-16 07:33:00 (CST-6)
Location: LISBON
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in RANSOM, NORTH DAKOTA
From 18-AUG-16 07:40:00 to 18-AUG-16 07:40:00 (CST-6)
Location: LISBON
Magnitude: 1.00 
Reported by: 911 Call Center

Thunderstorm Wind in SARGENT, NORTH DAKOTA
From 18-AUG-16 08:02:00 to 18-AUG-16 08:02:00 (CST-6)
Location: BRAMPTON
Magnitude: 55.00 MG
Reported by: Mesonet

The wind gust was measured by a personal weather station near the South Dakota border.

Thunderstorm Wind in SARGENT, NORTH DAKOTA
From 18-AUG-16 08:20:00 to 18-AUG-16 08:20:00 (CST-6)
Location: RUTLAND
Magnitude: 52.00 EG
Reported by: Public

Several four to six inch diameter tree branches were blown down around farmsteads and in shelterbelts across Tewaukon Township. There was also a brief period of dime to nickel sized hail.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 06:55:00 to 18-AUG-16 06:55:00 (CST-6)
Location: PEAK
Magnitude: 70.00 EG
Reported by: Broadcast Media

A semi tractor and trailer combination was blown off of Interstate 94 just east of Valley City.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 07:05:00 to 18-AUG-16 07:05:00 (CST-6)
Location: KOLDOK
Magnitude: 70.00 EG
Reported by: Broadcast Media

A semi carrying anhydrous ammonia rolled on its side in the eastbound lane of Interstate 94.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 06:25:00 to 18-AUG-16 06:25:00 (CST-6)
Location: ECKELSON
Magnitude: 70.00 EG
Reported by: Public

A semi tractor and trailer combination was blown off of Interstate 94 near mile point 178. Large tree branches were broken down in shelterbelts across southern Potter Township.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 18-AUG-16 06:18:00 to 18-AUG-16 06:18:00 (CST-6)
Location: ECKELSON
Magnitude: 70.00 EG
Reported by: Public

A five to ten inch diameter tree was snapped by the strong winds. Nearby, one shed was tipped over and a second was flattened.