A variety of upper level short-wave troughs combined with a surface trough and frontal boundary to produce thunderstorms during the late afternoon, evening, and late night hours. A very unstable and highly sheared atmosphere allowed many of the storms to become severe, with large hail, damaging wind gusts, and two tornadoes. Some of the wind gusts were very strong with estimated speeds up to 90 mph, causing severe damage to buildings in McIntosh, Dickey, and Morton counties. Tornadoes occurred in McIntosh and Dickey counties. The tornadoes produced no damage to evaluate and so by National Weather Service policy they were both rated EF Unknown. The largest hail reported was the size of tennis balls, which occurred early in the episode over McIntosh County.

Thunderstorm Wind in LA MOURE, NORTH DAKOTA
From 07-JUN-20 18:35:00 to 07-JUN-20 18:37:00 (CST-6)
Location: EDGELEY
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 07-JUN-20 18:56:00 to 07-JUN-20 18:58:00 (CST-6)
Location: (JMS)JAMESTOWN MUNI
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in GRANT, NORTH DAKOTA
From 07-JUN-20 19:00:00 to 07-JUN-20 19:03:00 (MST-7)
Location: ELGIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement estimated thunderstorm wind gusts of 60 mph.

Thunderstorm Wind in GRANT, NORTH DAKOTA
From 07-JUN-20 19:05:00 to 07-JUN-20 19:07:00 (MST-7)
Location: ELGIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement estimated thunderstorm wind gusts of 60 mph.

Hail in FOSTER, NORTH DAKOTA
From 07-JUN-20 19:07:00 to 07-JUN-20 19:09:00 (CST-6)
Location: BARLOW
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WELLS, NORTH DAKOTA
From 07-JUN-20 19:58:00 to 07-JUN-20 20:00:00 (CST-6)
Location: CATHAY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in MORTON, NORTH DAKOTA
From 07-JUN-20 20:40:00 to 07-JUN-20 20:43:00 (CST-6)
Location: NEW SALEM
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OLIVER, NORTH DAKOTA
From 07-JUN-20 21:11:00 to 07-JUN-20 21:13:00 (CST-6)
Location: PRICE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LA MOURE, NORTH DAKOTA
From 07-JUN-20 23:30:00 to 07-JUN-20 23:33:00 (CST-6)
Location: LA MOURE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 07-JUN-20 18:53:00 to 07-JUN-20 18:56:00 (CST-6)
Location: BLOOM
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A power line blew down onto the road.

Thunderstorm Wind in DICKEY, NORTH DAKOTA
From 07-JUN-20 20:00:00 to 07-JUN-20 20:05:00 (CST-6)
Location: ELLENDALE ARPT
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple trees and at least one power pole blew down in the city of Ellendale.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 07-JUN-20 23:20:00 to 07-JUN-20 23:30:00 (CST-6)
Location: FLASHER
Magnitude: 78.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A home sustained substantial damage due to straight line winds. Approximately one-half of the roofing on the west side of the home blew off, with much of the remaining metal roof covering on the west side also being blown off. An attached permanent front porch awning on the west side, a wheel barrow, and multiple children's toys were also blown away. The debris blew towards the east-northeast.

Thunderstorm Wind in DICKEY, NORTH DAKOTA
From 07-JUN-20 19:30:00 to 07-JUN-20 19:40:00 (CST-6)
Location: ELLENDALE
Magnitude: 78.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A 130 foot by 300 foot pole barn structure sustained substantial damage from straight line winds. Almost all of the roofing structure collapsed, along with portions of the walls. The debris was spread to the north of the structure.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-20 17:30:00 to 07-JUN-20 17:33:00 (CST-6)
Location: ASHLEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in MCINTOSH, NORTH DAKOTA
From 07-JUN-20 17:45:00 to 07-JUN-20 17:46:00 (CST-6)
Location: ASHLEY
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The tornado touched down in a field just west-northwest of Ashley. There was no damage to evaluate and so by National Weather Service policy the tornado is rated EF Unknown.

Thunderstorm Wind in MCINTOSH, NORTH DAKOTA
From 07-JUN-20 18:20:00 to 07-JUN-20 18:30:00 (CST-6)
Location: ASHLEY
Magnitude: 78.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Six structures on a farmstead were either damaged or destroyed by severe thunderstorm winds. The structures were mainly pole barns, but one was a cinder block silo which may have been stuck by other debris. The debris was spread for one-quarter mile to the northeast.

Hail in KIDDER, NORTH DAKOTA
From 07-JUN-20 18:28:00 to 07-JUN-20 18:31:00 (CST-6)
Location: DAWSON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIDDER, NORTH DAKOTA
From 07-JUN-20 18:28:00 to 07-JUN-20 18:31:00 (CST-6)
Location: DAWSON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LA MOURE, NORTH DAKOTA
From 07-JUN-20 18:35:00 to 07-JUN-20 18:37:00 (CST-6)
Location: EDGELEY
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in KIDDER, NORTH DAKOTA
From 07-JUN-20 18:02:00 to 07-JUN-20 18:05:00 (CST-6)
Location: STEELE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIDDER, NORTH DAKOTA
From 07-JUN-20 18:06:00 to 07-JUN-20 18:09:00 (CST-6)
Location: STEELE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HETTINGER, NORTH DAKOTA
From 07-JUN-20 18:06:00 to 07-JUN-20 18:08:00 (MST-7)
Location: REGENT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, NORTH DAKOTA
From 07-JUN-20 17:20:00 to 07-JUN-20 17:22:00 (MST-7)
Location: HETTINGER ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-20 17:30:00 to 07-JUN-20 17:33:00 (CST-6)
Location: VENTURA
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HETTINGER, NORTH DAKOTA
From 07-JUN-20 18:08:00 to 07-JUN-20 18:11:00 (MST-7)
Location: MOTT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-20 18:20:00 to 07-JUN-20 18:24:00 (CST-6)
Location: ZEELAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in DICKEY, NORTH DAKOTA
From 07-JUN-20 18:20:00 to 07-JUN-20 18:21:00 (CST-6)
Location: MERRICOURT
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado touched down in a field west-northwest of Merricourt, in the northwest corner of Dickey County. There was no damage to evaluate and so by National Weather Service policy the tornado is rated EF Unknown.