On June 7th, 500mb ridging had set up over eastern Minnesota into Wisconsin, with southwest flow over the Dakotas into northwest Minnesota. At the surface, by mid afternoon, a cold front had moved into central North Dakota, with a stationary boundary just to the east of the Red River Valley. It was hot and windy over eastern North Dakota into the Valley, with temperatures peaking in the upper 80s to upper 90s (Fargo set a record high of 99 degrees), and dew points in the 60s to low 70s. South winds were strong all day, gusting into the 45 mph range consistently. East of the Red River Valley, in northwest Minnesota, temperatures were cooler with lower wind speeds. By mid afternoon, thunderstorms flared up over northwest Minnesota. Through the rest of the late afternoon and evening, numerous severe storms occurred over eastern North Dakota into the Red River Valley, producing large hail, damaging winds, and even a tornado.

Hail in KITTSON, MINNESOTA
From 07-JUN-20 17:55:00 to 07-JUN-20 17:55:00 (CST-6)
Location: LANCASTER ARPT
Magnitude: 1.00 
Reported by: Other Federal Agency

The hail fell along the highway near the border.

Hail in MARSHALL, MINNESOTA
From 07-JUN-20 18:00:00 to 07-JUN-20 18:00:00 (CST-6)
Location: ALVARADO
Magnitude: 1.25 
Reported by: Trained Spotter

Nickel to half dollar sized hail fell.

Hail in MARSHALL, MINNESOTA
From 07-JUN-20 18:17:00 to 07-JUN-20 18:17:00 (CST-6)
Location: STEPHEN
Magnitude: 1.00 
Reported by: Trained Spotter

Dime to quarter sized hail was reported along highway 75.

Hail in KITTSON, MINNESOTA
From 07-JUN-20 18:44:00 to 07-JUN-20 18:44:00 (CST-6)
Location: HALMA
Magnitude: 1.25 
Reported by: Law Enforcement

Hail in MARSHALL, MINNESOTA
From 07-JUN-20 19:22:00 to 07-JUN-20 19:22:00 (CST-6)
Location: STEPHEN
Magnitude: 1.25 
Reported by: Trained Spotter

Thunderstorm Wind in POLK, MINNESOTA
From 07-JUN-20 20:45:00 to 07-JUN-20 20:45:00 (CST-6)
Location: CLIMAX
Magnitude: 56.00 EG
Reported by: Social Media

A tree was blown over in a yard.

Thunderstorm Wind in POLK, MINNESOTA
From 07-JUN-20 21:02:00 to 07-JUN-20 21:02:00 (CST-6)
Location: HIXON
Magnitude: 54.00 MG
Reported by: AWOS

The wind gust was measured at the Crookston airport.

Thunderstorm Wind in PENNINGTON, MINNESOTA
From 07-JUN-20 21:18:00 to 07-JUN-20 21:18:00 (CST-6)
Location: (TVF)THIEF RVR FALLS
Magnitude: 54.00 MG
Reported by: AWOS

The wind gust was measured at the Thief River Falls airport.

Thunderstorm Wind in CLAY, MINNESOTA
From 07-JUN-20 21:20:00 to 07-JUN-20 21:20:00 (CST-6)
Location: DILWORTH
Magnitude: 56.00 EG
Reported by: Public

Large tree branches, power lines, and sections of fencing were blown down between north Moorhead and Dilworth.

Thunderstorm Wind in PENNINGTON, MINNESOTA
From 07-JUN-20 21:22:00 to 07-JUN-20 21:22:00 (CST-6)
Location: THIEF RIVER FALLS
Magnitude: 61.00 EG
Reported by: Social Media

Roofing was torn off a trailer home and numerous large tree branches were blown down.

Thunderstorm Wind in MAHNOMEN, MINNESOTA
From 07-JUN-20 21:30:00 to 07-JUN-20 21:30:00 (CST-6)
Location: MAHKONCE
Magnitude: 52.00 EG
Reported by: Public

A few large tree branches were blown down near the Island Lake boat dock.

Thunderstorm Wind in MARSHALL, MINNESOTA
From 07-JUN-20 21:35:00 to 07-JUN-20 21:35:00 (CST-6)
Location: HOLT
Magnitude: 50.00 EG
Reported by: Public

Four to 6 inch diameter branches were blown down in a farm yard.

Thunderstorm Wind in CLAY, MINNESOTA
From 07-JUN-20 21:40:00 to 07-JUN-20 21:40:00 (CST-6)
Location: BARNESVILLE
Magnitude: 52.00 EG
Reported by: Social Media

Large branches were blown down in a farm yard.

Thunderstorm Wind in RED LAKE, MINNESOTA
From 07-JUN-20 21:45:00 to 07-JUN-20 21:45:00 (CST-6)
Location: BROOKS
Magnitude: 56.00 EG
Reported by: Social Media

Large branches were blown down and numerous power outages were reported.

Thunderstorm Wind in CLAY, MINNESOTA
From 07-JUN-20 21:50:00 to 07-JUN-20 21:50:00 (CST-6)
Location: HAWLEY
Magnitude: 56.00 EG
Reported by: Broadcast Media

One 8 to 10 inch diameter tree was snapped and numerous other branches were blown down.

Thunderstorm Wind in ROSEAU, MINNESOTA
From 07-JUN-20 22:14:00 to 07-JUN-20 22:14:00 (CST-6)
Location: SWIFT
Magnitude: 51.00 MG
Reported by: Mesonet

The wind gust was measured by a personal weather station.

Thunderstorm Wind in PENNINGTON, MINNESOTA
From 07-JUN-20 22:35:00 to 07-JUN-20 22:35:00 (CST-6)
Location: ERIE
Magnitude: 61.00 EG
Reported by: NWS Storm Survey

A few 10 to 12 inch diameter trees were snapped and other large branches were blown down in a grove.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 07-JUN-20 22:37:00 to 07-JUN-20 22:37:00 (CST-6)
Location: BERNER
Magnitude: 61.00 EG
Reported by: NWS Storm Survey

A few trees were snapped in a grove.

Thunderstorm Wind in NORMAN, MINNESOTA
From 07-JUN-20 23:20:00 to 07-JUN-20 23:20:00 (CST-6)
Location: PERLEY
Magnitude: 56.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in NORMAN, MINNESOTA
From 07-JUN-20 23:29:00 to 07-JUN-20 23:29:00 (CST-6)
Location: ADA
Magnitude: 51.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in NORMAN, MINNESOTA
From 07-JUN-20 23:30:00 to 07-JUN-20 23:30:00 (CST-6)
Location: ADA
Magnitude: 56.00 EG
Reported by: Social Media

Tree branches and power lines were blown down.

Thunderstorm Wind in NORMAN, MINNESOTA
From 07-JUN-20 23:50:00 to 07-JUN-20 23:50:00 (CST-6)
Location: GARY
Magnitude: 52.00 EG
Reported by: Broadcast Media

Large tree limbs were blown down.

Hail in POLK, MINNESOTA
From 07-JUN-20 14:10:00 to 07-JUN-20 14:10:00 (CST-6)
Location: GENTILLY
Magnitude: 1.00 
Reported by: Social Media

Hail in PENNINGTON, MINNESOTA
From 07-JUN-20 14:50:00 to 07-JUN-20 14:50:00 (CST-6)
Location: (TVF)THIEF RVR FALLS
Magnitude: 1.25 
Reported by: Public

Hail in PENNINGTON, MINNESOTA
From 07-JUN-20 15:05:00 to 07-JUN-20 15:05:00 (CST-6)
Location: THIEF RIVER FALLS
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in MARSHALL, MINNESOTA
From 07-JUN-20 15:25:00 to 07-JUN-20 15:25:00 (CST-6)
Location: HOLT
Magnitude: 1.00 
Reported by: Park/Forest Service

Hail in ROSEAU, MINNESOTA
From 07-JUN-20 15:35:00 to 07-JUN-20 15:35:00 (CST-6)
Location: STRATHCONA
Magnitude: 1.00 
Reported by: Public

Hail in ROSEAU, MINNESOTA
From 07-JUN-20 15:59:00 to 07-JUN-20 15:59:00 (CST-6)
Location: GREENBUSH
Magnitude: 0.75 
Reported by: Public

Hail in MARSHALL, MINNESOTA
From 07-JUN-20 16:20:00 to 07-JUN-20 16:20:00 (CST-6)
Location: STEPHEN ARPT
Magnitude: 1.50 
Reported by: Public

Hail in KITTSON, MINNESOTA
From 07-JUN-20 16:25:00 to 07-JUN-20 16:25:00 (CST-6)
Location: HALMA
Magnitude: 1.00 
Reported by: Law Enforcement

Hail in NORMAN, MINNESOTA
From 07-JUN-20 16:30:00 to 07-JUN-20 16:30:00 (CST-6)
Location: ADA
Magnitude: 0.88 
Reported by: Social Media

Hail in CLAY, MINNESOTA
From 07-JUN-20 16:35:00 to 07-JUN-20 16:35:00 (CST-6)
Location: ULEN
Magnitude: 1.50 
Reported by: Social Media

Hail in NORMAN, MINNESOTA
From 07-JUN-20 16:52:00 to 07-JUN-20 16:52:00 (CST-6)
Location: TWIN VLY
Magnitude: 1.00 
Reported by: Social Media

Hail in KITTSON, MINNESOTA
From 07-JUN-20 17:30:00 to 07-JUN-20 17:30:00 (CST-6)
Location: HALLOCK ARPT
Magnitude: 0.75 
Reported by: Department of Highways

Brief heavy rain and hail was reported. There was some standing water in the fields.

Hail in KITTSON, MINNESOTA
From 07-JUN-20 17:30:00 to 07-JUN-20 17:35:00 (CST-6)
Location: CARIBOU
Magnitude: 1.00 
Reported by: Public

Dime to quarter sized hail fell.