A severe thunderstorm produced a wind gust of 60 mph at Cooperstown, ND in eastern ND. Other thunderstorms produced non severe winds and hail over parts of eastern ND.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS FGF wrote it up.
A severe thunderstorm produced a wind gust of 60 mph at Cooperstown, ND in eastern ND. Other thunderstorms produced non severe winds and hail over parts of eastern ND.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before the first event at Jun 10, 1:47 PM CST, 2 hours 27 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Grand Forks ND 247 PM CDT Wed Jun 10 2026 .KEY MESSAGES... - There is a 2 of 5 risk for severe thunderstorms this afternoon east of the Red River. Main hazards include hail to the size of ping pong balls, wind gusts to 60 mph, and perhaps a tornado. - Much cooler, windier weather Thursday into the weekend. && .DISCUSSION... Issued at 247 PM CDT Wed Jun 10 2026 ...Synopsis... A lead shortwave will come off of the main upper trough currently over the northern Rockies/Plains, lifting through our CWA this afternoon and off into southern Canada tonight. The trough axis/frontal boundary will push through our MN counties and be through most of the CWA by this evening. The main upper trough starts to move off into the Upper Midwest and Ontario tomorrow and tomorrow night. Quite a few rain showers being produced by models under fairly cool air aloft, but CAPE values look to be less than 500 J/kg so severe threat is minimal. Northwesterly flow aloft sets up for the weekend and into the first part of next week, with a few weak reinforcing shortwaves moving through. ...Severe threat this afternoon... With the SPC meso page showing around 1500-2000 J/kg ML CAPE and effective shear in the 35 to 40 kt range, the severe threat will continue over our eastern counties for at least the next few hours. Some showers and thunderstorms have also developed behind the cold front near Jamestown but instability is much weaker. Cooler temperatures and drier dew points on the backside of the surface trough, so most of our deep convection will be out ahead of it. Severe thunderstorm watch in effect for our MN counties through 01Z, but will likely be able to cancel before then as most of our severe threat will be over after the cold front pushes through. SSCRAM probabilities around 25 to 30 percent for severe hail currently drop off quickly below 10 percent, although the HRRR still tries to develop some convection over the northern Red River Valley later this evening. Low level shear is not too impressive, and tornado activity isn't super likely. However, hail up to 1.5 inches and winds to 60 mph will continue as the cold front moves across northwestern MM. ...Cooler and breezy weekend into next week... Warm signal in the ECWMF EFI just for today and into Thursday morning, then flips over to cooler than climo temperatures. Nothing really impactful, but a break from head advisory conditions we saw yesterday. Low pressure over southern Canada will continue to bring a pretty tight pressure gradient through the end of the work week and into the weekend. Decent mixing up to 800 mb, but even the bullish BUFKIT soundings stay below wind advisory criteria. Breezy conditions look likely, but nothing warranting messaging at this point. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1246 PM CDT Wed Jun 10 2026 Some of the TAF sites have gone down to MVFR or low IFR as cumulus has started to bubble along the cold front close to the Red River. But the main impacts during the next few hours will be convection. KDVL is behind the cold front and may see a few stray showers, but most of the thunderstorms will be at KFAR and the MN airports. Have some prevailing thunder for KFAR for a short time as some lightning producing convection moves in during the next hour, then VCTS and tempo groups for it and the MN airports as convection becomes less certain. Convection should move east of most of our airports by 00Z, leaving VFR conditions and southwest to west winds at 10 to 15 kts. Winds will pick up from the southwest and northwest late in the period, and most model solutions bring some MVFR ceilings into KDVL tomorrow morning, so included it in the TAF. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...None. MN...None. && DISCUSSION...JR AVIATION...JR
Hazardous Weather Outlook National Weather Service Grand Forks ND 732 AM CDT Wed Jun 10 2026 NDZ006-007-014-015-024-026-028-029-038-049-052>054-111245- Towner-Cavalier-Benson-Ramsey-Eddy-Nelson-Griggs-Steele-Barnes- Ransom-Sargent-Richland-Western Walsh- 732 AM CDT Wed Jun 10 2026 This hazardous weather outlook is for portions of eastern North Dakota. .DAY ONE...Today and Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today. MNZ001>009-013>017-022>024-027>032-040-NDZ008-016-027-030-039- 111245- West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods- West Marshall-East Marshall-North Beltrami-Pennington-Red Lake- East Polk-North Clearwater-South Beltrami-Mahnomen- South Clearwater-Hubbard-West Becker-East Becker-Wilkin- West Otter Tail-East Otter Tail-Wadena-Grant-Pembina- Eastern Walsh-Grand Forks-Traill-Cass- 732 AM CDT Wed Jun 10 2026 This hazardous weather outlook is for portions of eastern North Dakota, west central and northwest Minnesota. .DAY ONE...Today and Tonight There is a level 1 out of 5 risk for severe thunderstorms within the Red River valley and west central Minnesota and a level 2 out of 5 risk for severe thunderstorms northwest and north central Minnesota for this afternoon. Hazards include hail, severe wind gusts up to 70 mph. Isolated tornado possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today.
Preliminary Local Storm Report
National Weather Service Grand Forks ND
134 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0120 PM Tstm Wnd Gst 1 SW Felton 47.07N 96.52W
06/10/2026 M54 MPH Clay MN Trained Spotter
&&Preliminary Local Storm Report
National Weather Service Grand Forks ND
207 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0140 PM Hail 8 SW Wannaska 48.58N 95.86W
06/10/2026 M0.88 Inch Roseau MN Public
0200 PM Tstm Wnd Gst 5 SSW Roseau 48.78N 95.80W
06/10/2026 M55 MPH Roseau MN Public
Personal Weather Station.
0201 PM Tstm Wnd Gst 1 SSW Roseau 48.83N 95.77W
06/10/2026 M50 MPH Roseau MN Public
Personal Weather Station.
&&Preliminary Local Storm Report
National Weather Service Grand Forks ND
409 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0338 PM Hail 10 SSE Naytahwaush 47.13N 95.57W
06/10/2026 E0.88 Inch Becker MN Trained Spotter
Hail up to the size of a nickel reported.
&&
BRPreliminary Local Storm Report
National Weather Service Grand Forks ND
424 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0420 PM Hail 7 E Alida 47.37N 95.08W
06/10/2026 E1.00 Inch Hubbard MN Public
Hail is ongoing at time of report. Many
smaller stones but some up to the size of a
quarter.
&&
BRPreliminary Local Storm Report
National Weather Service Grand Forks ND
451 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0440 PM Hail 2 S Deer Creek 46.37N 95.32W
06/10/2026 M1.50 Inch Otter Tail MN Public
&&
BRPreliminary Local Storm Report
National Weather Service Grand Forks ND
508 PM CDT Wed Jun 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0442 PM Hail Wadena 46.44N 95.14W
06/10/2026 M2.00 Inch Wadena MN Trained Spotter
Photos received of multiple 2 inch
hailstones, with many more around a golf
ball in size.
&&
BRThe Fargo/Grand Forks radar (KMVX), 60 km away, was scanning. The volume nearest the first event began at 22:13 UTC.
1 thunderstorm wind. Local standard time, as filed.
Measured gust at KS32 at Cooperstown, ND Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2026Every state in 2026This day in weather historyWarnings in North Dakota, June 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1347928.