Alert archive / North Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 63, NWS Grand Forks, ND

June 28, 2025Griggs County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 28, 2025, 3:34 PM CDT for Griggs County, North Dakota. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 28, 2025, 3:34 PM CDT (20:34 UTC)
Expired: Jun 28, 2025, 4:30 PM CDT
In force: 56 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Griggs County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 69 km from the middle of the area, began a volume at 20:37 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.6 hours before the alert went out and 201 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: 2239 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 1085 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -9.1

Open this sounding in Storm Lab

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, 12:25 PM CDT, 3 hours 9 minutes earlier.

Area forecast discussion, Jun 28, 12:25 PM CDT, 3 hours 9 minutes before

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Hazardous weather outlook, Jun 28, 4:09 AM CDT, 11 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
409 AM CDT Sat Jun 28 2025

MNZ001>009-013>017-022>024-027-028-NDZ006>008-014>016-024-026>030-
038-039-049-052>054-290915-
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-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
Western Walsh-
409 AM CDT Sat Jun 28 2025

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 late
this afternoon into the evening. The main hazards will be hail up
to the size of ping pong balls and wind gusts 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.

MNZ029>032-040-290915-
Wilkin-West Otter Tail-East Otter Tail-Wadena-Grant-
409 AM CDT Sat Jun 28 2025

This hazardous weather outlook is for portions of west central
Minnesota.

.DAY ONE...Today and Tonight

There is a level 2 out of 5 risk for severe thunderstorms late
this afternoon into the evening across west central Minnesota.
The main hazards will be hail up to the size of ping pong balls
and wind gusts to 60 mph. There is a low potential for an isolated
tornado to develop.

.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, 36 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, 5:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Clay, Norman	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, 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 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.