Severe thunderstorms including several supercells developed over parts of eastern ND and northwest MN during the afternoon and evening, with very large hail and severe winds reported over parts of eastern ND. The largest hail was the size of softballs in south Fargo, ND.
Every event with a place to put it. Tap one for its entry below.
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.
Severe thunderstorms including several supercells developed over parts of eastern ND and northwest MN during the afternoon and evening, with very large hail and severe winds reported over parts of eastern ND. The largest hail was the size of softballs in south Fargo, 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 29, 5:56 PM CST, 1 hour 12 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Grand Forks ND
656 PM CDT Mon Jun 29 2026
.KEY MESSAGES...
- Severe storms later today. Tornadoes, damaging wind, and large
hail are all possible. A few tornadoes could be strong.
- Heat Advisory through 8pm this evening for the Southern Red River
Valley and west central Minnesota.
- Potential for heat impacts mid-week and into the Fourth of July
weekend, along with chances for thunderstorms.
&&
.DISCUSSION...
Issued at 233 PM CDT Mon Jun 29 2026
Today and tonight...the to main concern is severe weather from
thunderstorms across most of the area with a secondary threat of
heat across the southern part of the Red River Valley.
Starting with severe storms, damaging wind, large hail, and
tornadoes are all possible this afternoon into the evening. The most
concerning aspect is the elevated values of low level helicity in
the wrapped up triple point along and north of a surface low
pressure system. Storms that form in this environment will have low
cloud bases, and plenty of veering winds in the low level that will
support a tornadic threat this afternoon and into the evening. A
tornado watch was issued around 2pm through 10 pm. There could be
multiple rounds of storms, so please make sure you are able to
receive any warnings that are issued.
Meanwhile, a heat advisory continues this afternoon and this evening.
The morning convection did temper temperatures a bit, the humid air
mass will still support heat indices near 90 to 95 degrees. Temperatures
will cool off this evening, and storm will exit to the north as drier
air moves across the region overnight.
Tuesday through Sunday...The cooler and drier air will keep highs only in
the upper 70s to low 80s on Tuesday, with a gradual warm up to the 80s the
rest of the week. Thursday and Friday could see a few 90s across the Red
River Valley.
Meanwhile, Tuesday and Wednesday will be dry, but thunderstorm chances
return for Thursday and the rest of the week as southerly flow advects
increased moisture back across the region. Continued with the blended
guidance which shows the highest thunderstorm chances Thursday night
through Saturday.
&&
.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 655 PM CDT Mon Jun 29 2026
Main concern for aviation this afternoon and evening remains
thunderstorms, which will carry a risk of large hail, damaging
winds, and tornadoes. CAMs and other high-res guidance continue to
struggle a bit to accurately reflect what is currently happening on
radar and to agree on timing going forward...leaned slightly heavier
on radar trends and recent HRRR runs for timing. Carrying PROB30
groups everywhere except KDVL where predominant storms are about to
push into the terminal from the southwest. Drops to MVFR cigs/vsbys
will be possible near/under thunderstorms as reflected in the
PROB30s (and these have been calibrated/nudged based on upstream
observations at other airports) along with the above mentioned
hazards. Additional AMDs may continue to be necessary based on radar
and observation trends. Consensus improves in the guidance with
respect to end time with storms expected to exit to the east-
northeast between 04-06z this evening depending on the terminal,
with VFR conditions then expected and skies largely clearing.
Southwest winds are expected to ramp up Tuesday morning and last
throughout the day with mostly sunny/clear and dry conditions, with
high forecast confidence.
&&
.FGF WATCHES/WARNINGS/ADVISORIES...
ND...Heat Advisory until 8 PM CDT this evening for NDZ039-053.
MN...Heat Advisory until 8 PM CDT this evening for MNZ002-003-024-
027>032-040.
Wind Advisory until 3 PM CDT this afternoon for MNZ009-017-024-
032.
&&
DISCUSSION...FGF
AVIATION...FGFHazardous Weather Outlook National Weather Service Grand Forks ND 326 PM CDT Mon Jun 29 2026 MNZ001-004>009-013>017-023-024-032-NDZ006>008-014>016-024-026>030- 038-054-302030- West Polk-Kittson-Roseau-Lake Of The Woods-West Marshall- East Marshall-North Beltrami-Pennington-Red Lake-East Polk- North Clearwater-South Beltrami-South Clearwater-Hubbard-Wadena- Towner-Cavalier-Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson- Grand Forks-Griggs-Steele-Traill-Barnes-Western Walsh- 326 PM CDT Mon Jun 29 2026 This hazardous weather outlook is for portions of eastern North Dakota, west central and northwest Minnesota. .DAY ONE...This Afternoon and Tonight There is a level 3 out of 5 risk for severe thunderstorms this afternoon through this evening. Hazards could include large hail, damaging wind gusts, and isolated tornadoes. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Showers and thunderstorms return late this week. Potential for heat impacts next week, including the Fourth of July weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today. MNZ002-003-022-027>031-040-NDZ039-049-052-053-302030- Norman-Clay-Mahnomen-West Becker-East Becker-Wilkin- West Otter Tail-East Otter Tail-Grant-Cass-Ransom-Sargent- Richland- 326 PM CDT Mon Jun 29 2026 This hazardous weather outlook is for portions of eastern North Dakota, west central and northwest Minnesota. .DAY ONE...This Afternoon and Tonight There is a level 3 out of 5 risk for severe thunderstorms this afternoon through this evening. Hazards could include large hail, damaging wind gusts, and isolated tornadoes. Heat Advisory in effect Monday: Noon to 8pm for the Southern Red River Valley and west central Minnesota. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Showers and thunderstorms return late this week. Potential for heat impacts next week, including the Fourth of July weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today.
Preliminary Local Storm Report
National Weather Service Grand Forks ND
216 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0215 AM Hail Leeds 48.29N 99.43W
06/29/2026 E1.00 Inch Benson ND Public
Delayed Report: Siding damage to multiple
homes in Leeds and vehicle damage from hail.
&&Preliminary Local Storm Report
National Weather Service Grand Forks ND
237 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1120 AM Tstm Wnd Dmg 6 N Two Inlets 47.14N 95.21W
06/29/2026 Becker MN Trained Spotter
Delayed report: Multiple trees down with
tree branch diameter between 12 inches to 15
inches.
&&Preliminary Local Storm Report
National Weather Service Grand Forks ND
437 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 AM Hail 3 NNW Baker 48.20N 99.68W
06/29/2026 M1.00 Inch Benson ND Public
Delayed Report.
&&The Fargo/Grand Forks radar (KMVX), 94 km away, was scanning. The volume nearest the first event began at 01:06 UTC.
4 hail, 2 thunderstorm wind. Local standard time, as filed.
Broadcast media relayed photo of 4 inch hail stone next to tape measurer from south Fargo area. Estimated location and time based on radar.
Report relayed by mPING of half dollar size hail.
Report from public of estimated golf ball size hail 4 S of Fargo.
Measured gust by NDAWN 1 mile south of Webster, ND.
Report of measured quarter size hail.
Measured gusty by NDDOT site 040 near Clyde, ND.
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 2026-09-30. Each event’s entry at NCEI: 1351378, 1351379, 1351380, 1351382, 1351381, 1351383.