A negatively tilted trough and associated cold front pushed across the CWA on the morning of June 11th. Severe thunderstorms developed along the pre-frontal trough, as well as the cold front. Numerous wind damage, and hail reports were submitted, as well as a tornado.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 11-JUN-21 02:49:00 to 11-JUN-21 02:49:00 (CST-6)
Location: WIMBLEDON
Magnitude: 70.00 EG
Reported by: Broadcast Media

Large, empty grain bins at an elevator complex were caved in and collapsed. Peak winds estimated to be 80 mph, with multiple long duration gusts.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 11-JUN-21 02:56:00 to 11-JUN-21 02:56:00 (CST-6)
Location: HAMAR
Magnitude: 50.00 MG
Reported by: Mesonet

Wind gust of 58 mph reported via NDAWN.

Thunderstorm Wind in GRIGGS, NORTH DAKOTA
From 11-JUN-21 03:05:00 to 11-JUN-21 03:05:00 (CST-6)
Location: COOPERSTOWN
Magnitude: 50.00 MG
Reported by: Mesonet

Peak wind was measured at an NDAWN station.

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 11-JUN-21 03:08:00 to 11-JUN-21 03:08:00 (CST-6)
Location: TOKIO
Magnitude: 56.00 MG
Reported by: Mesonet

Peak wind was measured at a North Dakota DOT RWIS station.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 11-JUN-21 03:08:00 to 11-JUN-21 03:08:00 (CST-6)
Location: PEKIN
Magnitude: 63.00 MG
Reported by: Mesonet

Peak wind report at 10 meters via NDAWN.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 11-JUN-21 03:10:00 to 11-JUN-21 03:10:00 (CST-6)
Location: PEKIN
Magnitude: 56.00 MG
Reported by: Mesonet

Peak gust of 65 mph reported via NDAWN.

Thunderstorm Wind in GRIGGS, NORTH DAKOTA
From 11-JUN-21 03:15:00 to 11-JUN-21 03:15:00 (CST-6)
Location: COOPERSTOWN ARPT
Magnitude: 70.00 MG
Reported by: AWOS

Peak wind measured at the Cooperstown Airport KS32.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 11-JUN-21 03:15:00 to 11-JUN-21 03:15:00 (CST-6)
Location: PICKERT
Magnitude: 74.00 MG
Reported by: Trained Spotter

Peak wind measured at a personal weather station.

Thunderstorm Wind in GRIGGS, NORTH DAKOTA
From 11-JUN-21 03:15:00 to 11-JUN-21 03:15:00 (CST-6)
Location: COOPERSTOWN
Magnitude: 70.00 MG
Reported by: AWOS

Peak gust of 81 mph reported at the Cooperstown Airport AWOS.

Thunderstorm Wind in CAVALIER, NORTH DAKOTA
From 11-JUN-21 03:22:00 to 11-JUN-21 03:22:00 (CST-6)
Location: CLYDE
Magnitude: 55.00 MG
Reported by: Mesonet

Peak wind was measured at an NDAWN station at 10 meters.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 11-JUN-21 03:24:00 to 11-JUN-21 03:24:00 (CST-6)
Location: LUVERNE
Magnitude: 72.00 MG
Reported by: Public

Wind gust of 83 mph was measured at a personal weather station.

Thunderstorm Wind in RAMSEY, NORTH DAKOTA
From 11-JUN-21 03:25:00 to 11-JUN-21 03:25:00 (CST-6)
Location: EDMORE
Magnitude: 51.00 MG
Reported by: Mesonet

Wind gust of 59 mph was reported via NDAWN.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 11-JUN-21 03:25:00 to 11-JUN-21 03:25:00 (CST-6)
Location: LISBON MUNI ARPT
Magnitude: 63.00 MG
Reported by: Mesonet

Wind gust of 72 mph was reported by the NDAWN in Lisbon.

Hail in RANSOM, NORTH DAKOTA
From 11-JUN-21 03:30:00 to 11-JUN-21 03:30:00 (CST-6)
Location: FT RANSOM
Magnitude: 1.75 
Reported by: Broadcast Media

Hail report was relayed via media.

Thunderstorm Wind in SARGENT, NORTH DAKOTA
From 11-JUN-21 03:35:00 to 11-JUN-21 03:35:00 (CST-6)
Location: GWINNER ARPT
Magnitude: 51.00 MG
Reported by: AWOS

Peak wind gust was measured at the Gwinner Airport KGWR.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 11-JUN-21 03:36:00 to 11-JUN-21 03:36:00 (CST-6)
Location: LOGAN CENTER
Magnitude: 54.00 MG
Reported by: Mesonet

Peak wind gust measured via NDAWN at 10 meters.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 11-JUN-21 03:38:00 to 11-JUN-21 03:38:00 (CST-6)
Location: AYR
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Peak wind was measured at a North Dakota DOT RWIS station.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 03:45:00 to 11-JUN-21 03:45:00 (CST-6)
Location: PORTLAND
Magnitude: 60.00 EG
Reported by: Broadcast Media

Tree branches were toppled and partially uprooted. Time estimated from radar.

Thunderstorm Wind in STEELE, NORTH DAKOTA
From 11-JUN-21 03:47:00 to 11-JUN-21 03:47:00 (CST-6)
Location: FINLEY
Magnitude: 60.00 EG
Reported by: Public

Large tree branches were broken and one tree was snapped.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 11-JUN-21 03:50:00 to 11-JUN-21 03:50:00 (CST-6)
Location: FAIRDALE
Magnitude: 60.00 EG
Reported by: Public

Large 4 to 6 inch diameter branches broken down across town.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 11-JUN-21 03:55:00 to 11-JUN-21 03:55:00 (CST-6)
Location: VENLO
Magnitude: 58.00 MG
Reported by: Mesonet

Peak wind gust measured at a RAWS station. Time estimated based on radar data.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 03:56:00 to 11-JUN-21 03:56:00 (CST-6)
Location: MAYVILLE
Magnitude: 50.00 MG
Reported by: Mesonet

The NDAWN 2E of Mayville reported a 58 mph wind gust.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 11-JUN-21 04:00:00 to 11-JUN-21 04:00:00 (CST-6)
Location: LAKOTA
Magnitude: 60.00 EG
Reported by: Law Enforcement

Law enforcement reports large trees are down across the area.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 04:02:00 to 11-JUN-21 04:02:00 (CST-6)
Location: BUXTON
Magnitude: 60.00 EG
Reported by: Public

Large tree branches broken, time estimated via radar.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 04:07:00 to 11-JUN-21 04:07:00 (CST-6)
Location: REYNOLDS
Magnitude: 60.00 EG
Reported by: Public

Public report of downed trees and power lines.

Hail in CASS, NORTH DAKOTA
From 11-JUN-21 04:10:00 to 11-JUN-21 04:10:00 (CST-6)
Location: ARGUSVILLE
Magnitude: 1.25 
Reported by: Public

Public report of hail via social media. Time estimate based on radar.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 04:13:00 to 11-JUN-21 04:13:00 (CST-6)
Location: BLANCHARD
Magnitude: 54.00 MG
Reported by: Mesonet

Peak wind gust measured at a personal weather station.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 11-JUN-21 04:15:00 to 11-JUN-21 04:15:00 (CST-6)
Location: FAIRVIEW JCT
Magnitude: 52.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in PEMBINA, NORTH DAKOTA
From 11-JUN-21 04:15:00 to 11-JUN-21 04:15:00 (CST-6)
Location: CONCRETE
Magnitude: 60.00 EG
Reported by: Emergency Manager

A tree was blown down, blocking Highway 32.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 11-JUN-21 04:22:00 to 11-JUN-21 04:22:00 (CST-6)
Location: (GFK)GRAND FORKS INT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Peak wind of 63 mph was measured at KGFK.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 11-JUN-21 04:23:00 to 11-JUN-21 04:23:00 (CST-6)
Location: FAIRVIEW JCT
Magnitude: 52.00 MG
Reported by: Mesonet

Peak wind was measured at a North Dakota DOT RWIS station.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 04:26:00 to 11-JUN-21 04:26:00 (CST-6)
Location: REYNOLDS
Magnitude: 60.00 EG
Reported by: Broadcast Media

A semi truck was blown over along Interstate 29.

Hail in CASS, NORTH DAKOTA
From 11-JUN-21 04:30:00 to 11-JUN-21 04:30:00 (CST-6)
Location: FARGO
Magnitude: 1.00 
Reported by: Public

Relayed via broadcast media.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 11-JUN-21 04:35:00 to 11-JUN-21 04:35:00 (CST-6)
Location: WAHPETON
Magnitude: 65.00 EG
Reported by: Emergency Manager

Large trees were snapped or uprooted. Timing based on radar analysis.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 11-JUN-21 04:39:00 to 11-JUN-21 04:39:00 (CST-6)
Location: WIMBLEDON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One foot diameter trees were blown down.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 11-JUN-21 04:52:00 to 11-JUN-21 04:52:00 (CST-6)
Location: ALTON
Magnitude: 60.00 EG
Reported by: Broadcast Media

Semi truck was flipped over on Interstate 29.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 11-JUN-21 14:57:00 to 11-JUN-21 14:57:00 (CST-6)
Location: PEKIN
Magnitude: 63.00 MG
Reported by: Mesonet

Peak wind gust at 10 meters, reported via NDAWN.