On the evening of June 16th, mid level temperatures were very warm over the eastern half of North Dakota and the northwest quarter of Minnesota, which helped prevent any thunderstorms from forming. However, just after midnight CDT of the 17th, a few weaker thunderstorms formed and tracked along the Canadian border in northeast North Dakota and northwest Minnesota. Then, around sunrise of the 17th, severe thunderstorms formed around the Maddock and New Rockford, ND, area, and began to track east-northeast. These storms quickly turned into a line of storms that showed bowing segments, or indications of strong winds, as well as hail. These storms reached the central and northern Red River Valley early in the morning, where the line expanded further southward into most of northwest Minnesota by mid to late morning.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 17-JUN-16 06:23:00 to 17-JUN-16 06:23:00 (CST-6)
Location: SHARON
Magnitude: 56.00 EG
Reported by: Emergency Manager

Trees and power lines were blown down.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 17-JUN-16 06:25:00 to 17-JUN-16 06:25:00 (CST-6)
Location: FINLEY
Magnitude: 65.00 EG
Reported by: Trained Spotter

A large tree and several smaller branches were blown down.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:40:00 to 17-JUN-16 06:40:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 56.00 EG
Reported by: Amateur Radio

Trees and power lines were blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 07:00:00 to 17-JUN-16 07:00:00 (CST-6)
Location: GILBY
Magnitude: 56.00 EG
Reported by: Social Media

Trees and power lines were blown down.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:30:00 to 17-JUN-16 06:30:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 67.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:58:00 to 17-JUN-16 06:58:00 (CST-6)
Location: FOREST RIVER COLONY
Magnitude: 58.00 MG
Reported by: Mesonet

The wind gust was measured at a NDAWN mesonet site.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 06:59:00 to 17-JUN-16 06:59:00 (CST-6)
Location: FORDVILLE
Magnitude: 52.00 EG
Reported by: Public

A tree was snapped off at its base and the Fordville scale house was blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:58:00 to 17-JUN-16 06:58:00 (CST-6)
Location: NORTHWOOD
Magnitude: 52.00 EG
Reported by: Public

Strong winds moved through Northwood.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:59:00 to 17-JUN-16 06:59:00 (CST-6)
Location: (RDR)GRAND FORKS AFB
Magnitude: 52.00 MG
Reported by: Other Federal Agency

Strong winds hit the Grand Forks Air Force Base.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:28:00 to 17-JUN-16 06:28:00 (CST-6)
Location: LOGAN CENTER
Magnitude: 52.00 MG
Reported by: Mesonet

The wind gust was measured by a home weather station.

Hail in EDDY, NORTH DAKOTA
From 17-JUN-16 05:20:00 to 17-JUN-16 05:20:00 (CST-6)
Location: SHEYENNE
Magnitude: 2.75 
Reported by: Fire Department/Rescue

Thunderstorm Wind in PEMBINA, NORTH DAKOTA
From 17-JUN-16 07:55:00 to 17-JUN-16 07:55:00 (CST-6)
Location: DRAYTON
Magnitude: 65.00 EG
Reported by: Emergency Manager

A semi was blown off of Interstate 29.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:26:00 to 17-JUN-16 07:26:00 (CST-6)
Location: WARSAW
Magnitude: 64.00 MG
Reported by: Mesonet

The wind gust was measured by a home weather station.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:15:00 to 17-JUN-16 07:15:00 (CST-6)
Location: PARK RIVER
Magnitude: 56.00 EG
Reported by: Amateur Radio

Trees and power lines were blown down all around Park River.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:12:00 to 17-JUN-16 07:12:00 (CST-6)
Location: VESELEYVILLE
Magnitude: 78.00 EG
Reported by: Broadcast Media

A steel grain bin was blown off its foundation and an old barn was blown down.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:55:00 to 17-JUN-16 06:55:00 (CST-6)
Location: DAHLEN
Magnitude: 78.00 EG
Reported by: Public

A steel clad pole shed was destroyed by the wind and wooden poles were pulled up from the soil.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:10:00 to 17-JUN-16 07:10:00 (CST-6)
Location: VOSS
Magnitude: 56.00 EG
Reported by: COOP Observer

Four box elder trees were uprooted and 2.28 inches of rain fell.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:10:00 to 17-JUN-16 07:10:00 (CST-6)
Location: CONWAY
Magnitude: 59.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:47:00 to 17-JUN-16 06:47:00 (CST-6)
Location: NIAGARA
Magnitude: 70.00 EG
Reported by: Amateur Radio

A semi was blown off of U. S. Highway 2.

Hail in BENSON, NORTH DAKOTA
From 17-JUN-16 05:37:00 to 17-JUN-16 05:51:00 (CST-6)
Location: TOKIO
Magnitude: 2.50 
Reported by: Public

The hail ranged from 2 to 2.5 inches.

Hail in BENSON, NORTH DAKOTA
From 17-JUN-16 05:40:00 to 17-JUN-16 05:40:00 (CST-6)
Location: FT TOTTEN
Magnitude: 2.00 
Reported by: Emergency Manager

Large hail damaged the siding on a house, broke windows on the house, and damaged five vehicles.

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 17-JUN-16 05:50:00 to 17-JUN-16 05:50:00 (CST-6)
Location: FT TOTTEN
Magnitude: 78.00 EG
Reported by: Emergency Manager

Roofing and siding was torn off of two trailer homes.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:45:00 to 17-JUN-16 06:45:00 (CST-6)
Location: NIAGARA
Magnitude: 65.00 EG
Reported by: Amateur Radio

Trees and power lines were blown down.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:43:00 to 17-JUN-16 06:43:00 (CST-6)
Location: PETERSBURG
Magnitude: 78.00 EG
Reported by: Social Media

Siding and panels were torn off a grain elevator.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:50:00 to 17-JUN-16 06:50:00 (CST-6)
Location: EDISONS
Magnitude: 61.00 EG
Reported by: Amateur Radio

Large trees were blown down on the north side of U. S. Highway 2 at the rest area and points west.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 17-JUN-16 05:58:00 to 17-JUN-16 05:58:00 (CST-6)
Location: HAMAR
Magnitude: 68.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in RAMSEY, NORTH DAKOTA
From 17-JUN-16 05:59:00 to 17-JUN-16 05:59:00 (CST-6)
Location: CAMP GRAFTON
Magnitude: 55.00 MG
Reported by: Mesonet

The wind gust was measured by a ND DOT RWIS sensor.

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 17-JUN-16 05:55:00 to 17-JUN-16 05:55:00 (CST-6)
Location: WARWICK
Magnitude: 65.00 EG
Reported by: Emergency Manager

A large tree was uprooted and it fell across power lines and a house roof.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:20:00 to 17-JUN-16 06:20:00 (CST-6)
Location: LAKOTA
Magnitude: 70.00 EG
Reported by: Emergency Manager

Campers and travel trailers were flipped over at the Northern View Campground on the north side of Stump Lake.

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 17-JUN-16 05:05:00 to 17-JUN-16 05:05:00 (CST-6)
Location: JOSEPHINE
Magnitude: 78.00 EG
Reported by: Public

A pole barn was blown down by the strong wind.

Thunderstorm Wind in RAMSEY, NORTH DAKOTA
From 17-JUN-16 06:05:00 to 17-JUN-16 06:05:00 (CST-6)
Location: CRARY
Magnitude: 65.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:09:00 to 17-JUN-16 06:09:00 (CST-6)
Location: PEKIN
Magnitude: 63.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 17-JUN-16 06:10:00 to 17-JUN-16 06:10:00 (CST-6)
Location: MC VILLE
Magnitude: 61.00 EG
Reported by: Trained Spotter

Trees were blown down.

Flash Flood in WALSH, NORTH DAKOTA
From 17-JUN-16 07:45:00 to 17-JUN-16 12:45:00 (CST-6)
Location: GRAFTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 50.00K
Reported by: Emergency Manager

Heavy rain flooded fields and farm access roads across several townships in central and eastern Walsh County.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 06:30:00 to 17-JUN-16 06:30:00 (CST-6)
Location: LOGAN CENTER
Magnitude: 70.00 EG
Reported by: Trained Spotter

Large trees were blown down or uprooted in shelterbelts.

Flash Flood in GRAND FORKS, NORTH DAKOTA
From 17-JUN-16 07:40:00 to 17-JUN-16 12:45:00 (CST-6)
Location: INKSTER
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 10.00K
Reported by: Public

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:48:00 to 17-JUN-16 07:48:00 (CST-6)
Location: HERRICK
Magnitude: 70.00 EG
Reported by: NWS Storm Survey

A small 5,000 bushel steel grain bin was blown off its pad.

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 17-JUN-16 05:37:00 to 17-JUN-16 05:37:00 (CST-6)
Location: TOKIO
Magnitude: 65.00 EG
Reported by: Public

Strong winds snapped or uprooted several cedar and oak trees.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:38:00 to 17-JUN-16 07:38:00 (CST-6)
Location: OAKWOOD
Magnitude: 55.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor.

Flash Flood in PEMBINA, NORTH DAKOTA
From 17-JUN-16 07:50:00 to 17-JUN-16 12:45:00 (CST-6)
Location: DRAYTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 25.00K
Reported by: Emergency Manager

Interstate 29 near Drayton was temporarily closed due to flooding.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 17-JUN-16 07:28:00 to 17-JUN-16 07:28:00 (CST-6)
Location: GRAFTON
Magnitude: 56.00 EG
Reported by: Law Enforcement

Trees were blown down.