Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 65, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 29, 2026, 9:20 PM CDT for Becker County, Clay County, Mahnomen County, Minnesota. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2026, 9:20 PM CDT (02:20 UTC)
- Expired
- Jun 29, 2026, 10:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Becker County, MN, Clay County, MN, Mahnomen County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 115 km from the middle of the area, began a volume at 02:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 29, 2:00 PM CDT | Tornado Watch | SPC | 10 hr |
| Jun 29, 7:48 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 2.3 hours before the alert went out and 259 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -616 J/kg
- Mixed-layer LCL
- 1314 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
321
WUUS53 KFGF 300220
SVRFGF
MNC005-027-087-300315-
/O.NEW.KFGF.SV.W.0065.260630T0220Z-260630T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
920 PM CDT Mon Jun 29 2026
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
East central Clay County in northwestern Minnesota...
Southern Mahnomen County in northwestern Minnesota...
Northwestern Becker County in northwestern Minnesota...
* Until 1015 PM CDT.
* At 920 PM CDT, a severe thunderstorm was located over Dale, or 17
miles northwest of Detroit Lakes, moving northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Waubun, Naytahwaush, Ogema, White Earth, Dale, and White Earth
Nation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Minnesota. A Tornado Watch also remains in effect until 100 AM CDT
for northwestern Minnesota.
&&
LAT...LON 4682 9623 4693 9630 4732 9588 4730 9555
4724 9555
TIME...MOT...LOC 0220Z 219DEG 35KT 4692 9619
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DJR3 follow-up statements
642
WWUS53 KFGF 300232
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
932 PM CDT Mon Jun 29 2026
MNC027-300242-
/O.CAN.KFGF.SV.W.0065.000000T0000Z-260630T0315Z/
Clay MN-
932 PM CDT Mon Jun 29 2026
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CLAY COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Minnesota. A Tornado Watch also remains in effect until 100 AM CDT
for northwestern Minnesota.
&&
LAT...LON 4689 9612 4707 9615 4732 9588 4730 9555
4724 9555
TIME...MOT...LOC 0232Z 221DEG 34KT 4700 9607
$$
MNC005-087-300315-
/O.CON.KFGF.SV.W.0065.000000T0000Z-260630T0315Z/
Mahnomen MN-Becker MN-
932 PM CDT Mon Jun 29 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHERN MAHNOMEN AND NORTHWESTERN BECKER COUNTIES...
At 932 PM CDT, a severe thunderstorm was located 7 miles west of
Callaway, or 16 miles northwest of Detroit Lakes, moving northeast at
40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Waubun, Naytahwaush, Ogema, White Earth, and White Earth Nation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Minnesota. A Tornado Watch also remains in effect until 100 AM CDT
for northwestern Minnesota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4689 9612 4707 9615 4732 9588 4730 9555
4724 9555
TIME...MOT...LOC 0232Z 221DEG 34KT 4700 9607
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DJR740
WWUS53 KFGF 300244
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
944 PM CDT Mon Jun 29 2026
MNC005-087-300315-
/O.CON.KFGF.SV.W.0065.000000T0000Z-260630T0315Z/
Mahnomen MN-Becker MN-
944 PM CDT Mon Jun 29 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHERN MAHNOMEN AND NORTHWESTERN BECKER COUNTIES...
At 944 PM CDT, a severe thunderstorm was located over southwestern
White Earth Nation, or 19 miles north of Detroit Lakes, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Waubun, Naytahwaush, Ogema, White Earth, and White Earth Nation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Minnesota. A Tornado Watch also remains in effect until 100 AM CDT
for northwestern Minnesota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4698 9597 4715 9606 4732 9588 4730 9555
4724 9555
TIME...MOT...LOC 0244Z 219DEG 35KT 4710 9596
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DJR439
WWUS53 KFGF 300305
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
1005 PM CDT Mon Jun 29 2026
MNC005-087-300315-
/O.EXP.KFGF.SV.W.0065.000000T0000Z-260630T0315Z/
Mahnomen MN-Becker MN-
1005 PM CDT Mon Jun 29 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MAHNOMEN AND
NORTHWESTERN BECKER COUNTIES WILL EXPIRE AT 1015 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, small
hail and gusty winds are still possible with this thunderstorm.
A Tornado Watch remains in effect until midnight CDT for northwestern
Minnesota. A Tornado Watch also remains in effect until 100 AM CDT
for northwestern Minnesota.
Remember, a Severe Thunderstorm Warning still remains in effect for
Mahnomen County
&&
LAT...LON 4698 9597 4715 9606 4732 9588 4730 9555
4724 9555
TIME...MOT...LOC 0305Z 270DEG 35KT 4724 9580
$$
ThomasWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jun 29, 6:56 PM CDT, 2 hours 24 minutes earlier. Its 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.
Area forecast discussion, Jun 29, 6:56 PM CDT, 2 hours 24 minutes before
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, Jun 29, 3:26 PM CDT, 5 hours 54 minutes before
Hazardous 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.
In the hours before
Local storm report, Jun 29, 4:37 PM CDT, 4 hours 43 minutes before
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.
&&Local storm report, Jun 29, 8:24 PM CDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
824 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0817 PM Hail Moorhead 46.87N 96.75W
06/29/2026 M1.75 Inch Clay MN Trained Spotter
&&Local storm report, Jun 29, 8:31 PM CDT, 49 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
831 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0811 PM Hail 5 ENE Horace 46.79N 96.80W
06/29/2026 E1.25 Inch Cass ND Public
Relayed via mPING.
&&Local storm report, Jun 29, 8:41 PM CDT, 39 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
841 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0825 PM Hail 1 NE Moorhead 46.87N 96.74W
06/29/2026 M1.75 Inch Clay MN Public
&&Local storm report, Jun 29, 8:52 PM CDT, 28 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
852 PM CDT Mon Jun 29 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0815 PM Hail 2 SSW Moorhead 46.83N 96.78W
06/29/2026 E3.00 Inch Clay MN Public
Time estimated via radar.
&&The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:55 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 65 min |
| Jun 29, 8:22 PM CDT | Tornado Warning | FGF | Clay | 53 min |
| Jun 29, 8:42 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman, Polk | 42 min |
| Jun 29, 8:48 PM CDT | Tornado Warning | FGF | Polk | 42 min |
| Jun 29, 9:02 PM CDT | Tornado Warning | FGF | Becker, Clay, Mahnomen, Norman | 28 min |
| Jun 29, 9:15 PM CDT | Severe Thunderstorm Warning | FGF | Marshall, Pennington, Polk, Red Lake | 60 min |
| Jun 29, 9:29 PM CDT | Severe Thunderstorm Warning | FGF | Mahnomen, Norman, Polk | 61 min |
| Jun 29, 10:04 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Polk | 71 min |
| Jun 29, 10:34 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Roseau | 26 min |
| Jun 29, 10:56 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall | 44 min |
| Jun 29, 11:00 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 45 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.