The severe weather outbreak on Wednesday, June 17th, had a similar set up to the ones from June 7th and 8th. By the mid afternoon of June 17th, a stationary boundary was located over the central Dakotas, with eastern North Dakota and the adjacent area of the northwest quarter of Minnesota in the warm sector. Temperatures in the warm sector peaked in the upper 80s to middle 90s, with dew points in the 60s to around 70 degrees. The 500mb pattern featured ridging over the Great Lakes, with southwest flow over eastern North Dakota and northwest Minnesota. A lone thunderstorm initially formed over western Marshall County (Minnesota), and tracked northeast, passing west of Roseau. By that time, additional storms had formed between Jamestown and Grand Forks. This line of storms then tracked to the northeast, passing through the central and northern Red River Valley and Lake of the Woods region.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 17-JUN-20 18:45:00 to 17-JUN-20 18:45:00 (CST-6)
Location: LISBON
Magnitude: 56.00 EG
Reported by: Public

Tree damage was reported.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-20 18:46:00 to 17-JUN-20 18:46:00 (CST-6)
Location: NORTHWOOD
Magnitude: 50.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-20 18:56:00 to 17-JUN-20 18:56:00 (CST-6)
Location: (RDR)GRAND FORKS AFB
Magnitude: 60.00 MG
Reported by: AWOS

The wind gust was measured at the Grand Forks Air Force Base.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 17-JUN-20 19:14:00 to 17-JUN-20 19:14:00 (CST-6)
Location: REYNOLDS
Magnitude: 60.00 MG
Reported by: Amateur Radio

The wind gust was measured by a personal weather station.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 17-JUN-20 19:31:00 to 17-JUN-20 19:38:00 (CST-6)
Location: BUXTON
Magnitude: 57.00 MG
Reported by: Mesonet

The wind gust was measured by a RWIS mesonet sensor.

Hail in CASS, NORTH DAKOTA
From 17-JUN-20 19:48:00 to 17-JUN-20 19:48:00 (CST-6)
Location: NOLAN
Magnitude: 1.50 
Reported by: Public

Quarter to ping pong ball sized hail was reported.

Hail in CASS, NORTH DAKOTA
From 17-JUN-20 19:59:00 to 17-JUN-20 19:59:00 (CST-6)
Location: ABSARAKA
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 17-JUN-20 20:05:00 to 17-JUN-20 20:05:00 (CST-6)
Location: GALESBURG
Magnitude: 50.00 EG
Reported by: Public

Branches were blown down.

Hail in CASS, NORTH DAKOTA
From 17-JUN-20 20:14:00 to 17-JUN-20 20:17:00 (CST-6)
Location: ERIE
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 17-JUN-20 20:35:00 to 17-JUN-20 20:35:00 (CST-6)
Location: MURRAY
Magnitude: 56.00 EG
Reported by: Public

Tree limbs were blown down and power poles were broken.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 17-JUN-20 21:35:00 to 17-JUN-20 21:35:00 (CST-6)
Location: HILLSBORO
Magnitude: 56.00 EG
Reported by: Broadcast Media

The awning was twisted at a gas station.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 18-JUN-20 00:24:00 to 18-JUN-20 00:24:00 (CST-6)
Location: ERIE
Magnitude: 54.00 MG
Reported by: Mesonet

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 18-JUN-20 00:35:00 to 18-JUN-20 00:35:00 (CST-6)
Location: GALESBURG
Magnitude: 52.00 EG
Reported by: Public

Tree damage was reported.

Hail in RAMSEY, NORTH DAKOTA
From 17-JUN-20 16:56:00 to 17-JUN-20 16:56:00 (CST-6)
Location: DOYON
Magnitude: 1.00 
Reported by: Public

Large hail fell along highway 2, about a mile west of the racetrack.

Hail in RAMSEY, NORTH DAKOTA
From 17-JUN-20 17:20:00 to 17-JUN-20 17:20:00 (CST-6)
Location: BROCKET
Magnitude: 2.00 
Reported by: Social Media

Hail in WALSH, NORTH DAKOTA
From 17-JUN-20 17:35:00 to 17-JUN-20 17:35:00 (CST-6)
Location: ADAMS
Magnitude: 1.50 
Reported by: Law Enforcement

Hail in NELSON, NORTH DAKOTA
From 17-JUN-20 17:43:00 to 17-JUN-20 17:43:00 (CST-6)
Location: PELTO
Magnitude: 1.75 
Reported by: Social Media

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-20 17:44:00 to 17-JUN-20 17:44:00 (CST-6)
Location: PEKIN
Magnitude: 50.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Hail in GRIGGS, NORTH DAKOTA
From 17-JUN-20 17:48:00 to 17-JUN-20 17:48:00 (CST-6)
Location: HANNAFORD
Magnitude: 1.50 
Reported by: Broadcast Media

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-20 17:52:00 to 17-JUN-20 17:57:00 (CST-6)
Location: HERRICK
Magnitude: 56.00 EG
Reported by: NWS Storm Survey

Numerous trees were snapped in shelterbelts along Interstate 29 near the Alexander Henry Rest Area, from mile points 179 to 184.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 17-JUN-20 18:25:00 to 17-JUN-20 18:25:00 (CST-6)
Location: KOLDOK
Magnitude: 65.00 EG
Reported by: Law Enforcement

A semi trailer was blown off Interstate 94 near Oriska. A boat also blew off a trailer.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 17-JUN-20 18:29:00 to 17-JUN-20 18:33:00 (CST-6)
Location: SHERBROOKE
Magnitude: 65.00 EG
Reported by: Trained Spotter

Multiple boats, pontoons, and sections of boat docks were flipped on Golden Lake. Several large trees were snapped or uprooted on the east side of the lake. A section of roofing was torn off of two cabins and numerous tree branches were blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-20 18:31:00 to 17-JUN-20 18:31:00 (CST-6)
Location: (RDR)GRAND FORKS AFB
Magnitude: 50.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 17-JUN-20 18:35:00 to 17-JUN-20 18:35:00 (CST-6)
Location: TOWER CITY
Magnitude: 56.00 EG
Reported by: Public

Several trees were blown down in town.