Just after midnight, or during the early morning hours of July 8th, a stationary boundary was draped from the northern Red River Valley back to south of Bismarck. South of the boundary, temperatures were still in the lower 80s with dew points in the lower 70s. Just after 3 am CDT, an area of thunderstorms moved into the New Rockford, ND, area, while another thunderstorm formed around Thief River Falls, MN. Both areas of storms moved east-northeast, keeping most of the thunderstorm activity along the U. S. Highway 2 corridor. Other than a few reports of large hail, these storms primarily produced damaging wind gusts.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 02:30:00 to 08-JUL-18 02:30:00 (CST-6)
Location: NEW ROCKFORD
Magnitude: 80.00 EG
Reported by: Trained Spotter

Significant tree damage was reported.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 02:38:00 to 08-JUL-18 02:38:00 (CST-6)
Location: DIVIDE SIDING
Magnitude: 80.00 EG
Reported by: Public

Multiple trees were blown down and a machine shed was damaged.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 02:43:00 to 08-JUL-18 02:43:00 (CST-6)
Location: SHEYENNE
Magnitude: 70.00 EG
Reported by: NWS Storm Survey

Several 12 to 18 inch diameter trees were blown down.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 03:04:00 to 08-JUL-18 03:04:00 (CST-6)
Location: HAMAR
Magnitude: 54.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor along highway 20. Widespread tree damage was reported throughout central Colvin Township.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 08-JUL-18 03:18:00 to 08-JUL-18 03:18:00 (CST-6)
Location: PEKIN
Magnitude: 65.00 EG
Reported by: NWS Storm Survey

Widespread tree damage was noted along highway 15 through central Osago Township.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 08-JUL-18 03:36:00 to 08-JUL-18 03:36:00 (CST-6)
Location: ANETA GEHRKE ARPT
Magnitude: 65.00 EG
Reported by: Public

Widespread tree damage was noted in farmsteads and shelterbelts along highway 32 through western Rugh Township.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 08-JUL-18 03:56:00 to 08-JUL-18 03:56:00 (CST-6)
Location: LARIMORE
Magnitude: 55.00 EG
Reported by: Public

Tree branches were torn down and a roof was damaged.

Hail in GRAND FORKS, NORTH DAKOTA
From 08-JUL-18 04:26:00 to 08-JUL-18 04:26:00 (CST-6)
Location: BOLACK
Magnitude: 0.75 
Reported by: NWS Employee

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 08-JUL-18 04:27:00 to 08-JUL-18 04:27:00 (CST-6)
Location: GRAND FORKS
Magnitude: 55.00 EG
Reported by: Public

A tree was blown down onto Washington Street, near Gateway Drive.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 08-JUL-18 04:30:00 to 08-JUL-18 04:30:00 (CST-6)
Location: GRAND FORKS
Magnitude: 55.00 EG
Reported by: NWS Employee

A street pole light was bent down to the ground. Numerous large tree branches were also blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 08-JUL-18 04:35:00 to 08-JUL-18 04:35:00 (CST-6)
Location: GRAND FORKS
Magnitude: 55.00 EG
Reported by: Public

Large branches were blown down in Riverside Park.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 02:33:00 to 08-JUL-18 02:33:00 (CST-6)
Location: NEW ROCKFORD
Magnitude: 80.00 EG
Property damage: 500.00K
Reported by: NWS Storm Survey

Numerous trees were uprooted in town. Some of the trees fell on power lines, leading to widespread power outages.

High Wind in EDDY, NORTH DAKOTA
From 08-JUL-18 02:34:00 to 08-JUL-18 02:34:00 (CST-6)
Magnitude: 96.00 EG
Property damage: 650.00K
Reported by: NWS Storm Survey

An airport hangar sustained significant damage, with half of the roof removed and the outside walls on the north end of the building collapsed. Heavier debris was scattered approximately 50 to 150 feet northeast of the hangar, while lighter debris was scattered as far as 400 yards away. The damage was consistent with a microburst, with estimated winds of 95 to 110 mph.