Alert archive / Minnesota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 69, NWS Grand Forks, ND

June 28, 2025Clay County, Norman County, Minnesota; Cass County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 28, 2025, 5:39 PM CDT for Clay County, Norman County, Minnesota; Cass County, North Dakota. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 28, 2025, 5:39 PM CDT (22:39 UTC)
Expired: Jun 28, 2025, 6:26 PM CDT
In force: 47 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.75 in
Wind: 60.0 mph

Counties Clay County, MN, Norman County, MN, Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 66 km from the middle of the area, began a volume at 22:38 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.

What was reported inside it

Time	Report	Where	Remark
Jun 28, 5:40 PM CDT	HAIL 1	2 N Argusville, ND	Report relayed via social media. Quarter size hail and zero visibility in thunderstorm between mile marker 85 and Fargo on Interstate 29. Time and location estimated by radar.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 1 minutes after it went out.

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 28, 5:21 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.7 hours before the alert went out and 270 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 62 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 2062 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

748 
WUUS53 KFGF 282239
SVRFGF
MNC027-107-NDC017-282345-
/O.NEW.KFGF.SV.W.0069.250628T2239Z-250628T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
539 PM CDT Sat Jun 28 2025

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northwestern Clay County in northwestern Minnesota...
  Southwestern Norman County in northwestern Minnesota...
  Northeastern Cass County in southeastern North Dakota...

* Until 645 PM CDT.

* At 539 PM CDT, a severe thunderstorm was located over Argusville,
  or 16 miles north of Fargo, moving east at 25 mph.

  HAZARD...Golf 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...
  Harwood, Argusville, Felton, Georgetown, Perley, Gardner, and
  Brooktree Park.

This includes Interstate 29 between mile markers 74 and 89.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4703 9706 4721 9700 4715 9637 4686 9646
TIME...MOT...LOC 2239Z 280DEG 22KT 4708 9695 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Rafferty/Thomas

2 follow-up statements

687 
WWUS53 KFGF 282303
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
603 PM CDT Sat Jun 28 2025

MNC107-NDC017-282313-
/O.CAN.KFGF.SV.W.0069.000000T0000Z-250628T2345Z/
Norman MN-Cass ND-
603 PM CDT Sat Jun 28 2025

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NORMAN AND
NORTHEASTERN CASS COUNTIES IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northwestern Minnesota...and southeastern North Dakota.

&&

LAT...LON 4695 9679 4697 9680 4697 9682 4700 9682
      4701 9684 4703 9682 4707 9683 4707 9682
      4711 9682 4712 9683 4714 9683 4715 9684
      4715 9637 4686 9646
TIME...MOT...LOC 2303Z 280DEG 22KT 4706 9676 

$$

MNC027-282345-
/O.CON.KFGF.SV.W.0069.000000T0000Z-250628T2345Z/
Clay MN-
603 PM CDT Sat Jun 28 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHWESTERN CLAY COUNTY...

At 603 PM CDT, a severe thunderstorm was located over Georgetown, or
13 miles north of Fargo, moving east at 25 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...
Oakport, Felton, Georgetown, Kragnes, and Averill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4695 9679 4697 9680 4697 9682 4700 9682
      4701 9684 4703 9682 4707 9683 4707 9682
      4711 9682 4712 9683 4714 9683 4715 9684
      4715 9637 4686 9646
TIME...MOT...LOC 2303Z 280DEG 22KT 4706 9676 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Rafferty/Thomas

776 
WWUS53 KFGF 282326
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
626 PM CDT Sat Jun 28 2025

MNC027-282336-
/O.CAN.KFGF.SV.W.0069.000000T0000Z-250628T2345Z/
Clay MN-
626 PM CDT Sat Jun 28 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CLAY COUNTY IS
CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northwestern Minnesota...and southeastern North Dakota.

&&

LAT...LON 4695 9679 4697 9680 4697 9682 4700 9682
      4701 9684 4703 9682 4707 9683 4707 9682
      4711 9682 4712 9683 4714 9683 4715 9684
      4715 9637 4686 9646
TIME...MOT...LOC 2323Z 280DEG 22KT 4704 9655 

$$

Rafferty/Thomas

What 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 28, 3:58 PM CDT, 1 hour 41 minutes earlier. Its key messages:

There is a 2 out of 5 risk for severe thunderstorms this afternoon and evening in west-central Minnesota and parts of eastern North Dakota.

Area forecast discussion, Jun 28, 3:58 PM CDT, 1 hour 41 minutes before

Area Forecast Discussion
National Weather Service Grand Forks ND
358 PM CDT Sat Jun 28 2025

.KEY MESSAGES...

- There is a 2 out of 5 risk for severe thunderstorms this
  afternoon and evening in west-central Minnesota and parts of
  eastern North Dakota.

&&

.DISCUSSION...
Issued at 358 PM CDT Sat Jun 28 2025

...Synopsis...

We start out with weak H7 troughing today and weak cold front to our
west, with a warm front being lifted northward ahead of the cold
front. This will allow isolated to scattered severe storms this
afternoon across portions of eastern North Dakota and much of
northwest and west central Minnesota. As the cold front continues
east overnight, look for slightly drier air to work into the area on
Sunday. Isolate showers and storms are possible, mainly in northwest
Minnesota. Monday brings another chance for scattered showers and
thunderstorms to northwest Minnesota along a weak trough traversing
northwest flow. A strong storm or two is possible. Minimal precip
chances are expected Tuesday and Wednesday as H5 shortwave ridging
brings return flow into the area heading into Thursday and Friday.
This flow pattern will then start to flatten, bringing thunderstorms
back into the forecast late Thursday and into Friday.

...Severe Thunderstorms Possible this Afternoon and Evening...

A warm front lifts slowly north this afternoon. Conditions along the
front support the development of supercells along a line stretching
from southern Richland County through southern Wadena County.
Further north, a subtle cold front is beginning to initiate storms
along a line from eastern Eddy County through eastern Pembina
County. Along the warm front, hodographs are rather straight in the
upper levels, thus supporting splitting supercells that will likely
form into hybrid clusters on the left split side. Large hail up to
the size of golf balls is possible with these storms during the mid
to late afternoon. Any right moving supercells would be capable of
producing tornadoes in addition to large hail; however, current
guidance keeps the better chances in northeast South Dakota and
southwest Minnesota. Regarding the storms along the cold front, the
most likely hazard will be large hail up to 1.25 inches as storms
congeal into clusters along the front. DCAPE values increase through
the afternoon, which could enhance wind risk later this afternoon.
Gusts to 70 mph cannot be ruled out in this environment, especially
during the mid to late afternoon.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 1225 PM CDT Sat Jun 28 2025

VFR conditions prevail this afternoon at all TAF sites.
Isolated showers and thunderstorms are possible this afternoon
and evening, mainly after 21Z. Best chances will be south and
east of KFAR and south of KBJI. Stray showers and storms could
develop elsewhere, with little confidence in any one location.
Will monitor and amend as activity develops this afternoon.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...None.
MN...None.

&&

DISCUSSION...Lynch
AVIATION...Lynch

Hazardous weather outlook, Jun 28, 4:26 PM CDT, 1 hour 13 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
426 PM CDT Sat Jun 28 2025

MNZ004>009-013-016-017-NDZ006>008-014>016-024-054-292130-
Kittson-Roseau-Lake Of The Woods-West Marshall-East Marshall-
North Beltrami-Pennington-North Clearwater-South Beltrami-Towner-
Cavalier-Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Western Walsh-
426 PM CDT Sat Jun 28 2025

This hazardous weather outlook is for portions of eastern North
Dakota and northwest Minnesota.

.DAY ONE...Tonight

There is a level 1 out of 5 risk for severe thunderstorms this
afternoon and evening. The main hazards will be hail up to the
size of half dollars and wind to 60 mph.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

MNZ001>003-014-015-022>024-027>032-040-NDZ026>030-038-039-049-052-
053-292130-
West Polk-Norman-Clay-Red Lake-East Polk-Mahnomen-
South Clearwater-Hubbard-West Becker-East Becker-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
426 PM CDT Sat Jun 28 2025

This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.

.DAY ONE...Tonight

There is a level 2 out of 5 risk for severe thunderstorms this
afternoon and evening. The main hazards will be hail up to the
size of ping pong balls and damaging wind gusts of 60 mph.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

In the hours before

Special weather statement, Jun 28, 2:58 PM CDT, 2 hours 41 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
258 PM CDT Sat Jun 28 2025

NDZ024-026-282030-
Nelson ND-Eddy ND-
258 PM CDT Sat Jun 28 2025

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN NELSON AND EASTERN
EDDY COUNTIES THROUGH 330 PM CDT...

At 257 PM CDT, Doppler radar was tracking a strong thunderstorm near
Mchenry, or 26 miles northeast of Carrington, moving northeast at 10
mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vegetation is possible.

This storm will remain over mainly rural areas of southwestern Nelson
and eastern Eddy Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4784 9860 4770 9824 4767 9829 4767 9850
      4759 9850 4759 9883
TIME...MOT...LOC 1957Z 220DEG 11KT 4764 9863

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

Rafferty/Lynch

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 2:50 AM CDT	Special Weather Statement	FGF	Clearwater	25 min
Jun 28, 4:49 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	26 min
Jun 28, 5:07 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	38 min
Jun 28, 5:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Kittson, Roseau	47 min
Jun 28, 5:49 PM CDT	Tornado Warning	FGF	Kittson, Roseau	26 min
Jun 28, 6:12 PM CDT	Tornado Warning	FGF	Kittson, Roseau	31 min
Jun 28, 6:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Roseau	31 min
Jun 28, 6:51 PM CDT	Severe Thunderstorm Warning	FGF	Clay	29 min
Jun 27, 8:17 PM CDT	Severe Thunderstorm Warning	FGF	Benson	58 min
Jun 27, 9:21 PM CDT	Tornado Warning	FGF	Benson	27 min
Jun 28, 12:54 AM CDT	Special Weather Statement	FGF	Ransom	66 min
Jun 28, 1:33 AM CDT	Flash Flood Warning	FGF	Ransom	4 hr
Jun 28, 2:58 PM CDT	Special Weather Statement	FGF	Eddy	32 min
Jun 28, 3:11 PM CDT	Severe Thunderstorm Warning	FGF	Eddy, Griggs, Nelson	37 min
Jun 28, 3:34 PM CDT	Severe Thunderstorm Warning	FGF	Griggs	56 min
Jun 28, 4:11 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson, Walsh	26 min
Jun 28, 5:21 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	38 min
Jun 28, 6:21 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland	54 min
Jun 28, 6:58 PM CDT	Flash Flood Warning	FGF	Cass	6 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2025 Severe Thunderstorm Warnings in North Dakota, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.