Alert archive / North Dakota / Severe Thunderstorm Watches in 2025

Severe Thunderstorm Watch 577

August 7, 202517 counties in Minnesota; 21 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2025, 11:57 PM CDT for 17 counties in Minnesota; 21 counties in North Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Aug 7, 2025, 11:57 PM CDT (04:57 UTC)
Expired: Aug 8, 2025, 6:52 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 70 kt

All 38 counties

Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 31 km from the middle of the area, began a volume at 04:57 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 10%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 50%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Aug 8, 12:34 AM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	56 min
Aug 8, 12:55 AM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder, McLean, Morton, Oliver	65 min
Aug 8, 1:12 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, Grant, Morton, Sioux	63 min
Aug 8, 1:39 AM CDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Kidder	36 min
Aug 8, 1:44 AM CDT	Severe Thunderstorm Warning	BIS	Kidder, Stutsman	61 min
Aug 8, 1:59 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson	61 min
Aug 8, 2:02 AM CDT	Severe Thunderstorm Warning	BIS	Foster, Wells	58 min
Aug 8, 2:25 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Stutsman	48 min
Aug 8, 2:35 AM CDT	Tornado Warning	BIS	Foster, Stutsman	25 min
Aug 8, 2:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Barnes, Benson, Cass, Eddy, Grand Forks, Griggs and 3 more	64 min
Aug 8, 2:42 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson	20 min
Aug 8, 2:49 AM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	71 min
Aug 8, 2:52 AM CDT	Tornado Warning	FGF	Barnes, Eddy, Griggs, Steele	23 min
Aug 8, 3:10 AM CDT	Tornado Warning	FGF	Griggs, Nelson	20 min
Aug 8, 3:16 AM CDT	Severe Thunderstorm Warning Destructive damage threat	FGF	Grand Forks, Griggs, Nelson, Steele, Traill	29 min
Aug 8, 3:23 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Barnes, Cass, Griggs, Ransom, Steele, Traill	37 min
Aug 8, 3:34 AM CDT	Severe Thunderstorm Warning Destructive damage threat	FGF	Grand Forks, Griggs, Nelson, Steele, Traill	56 min
Aug 8, 3:44 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson, Walsh	46 min
Aug 8, 3:55 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Becker, Clay, Mahnomen, Norman, Otter Tail, Wilkin	65 min
Aug 8, 3:58 AM CDT	Severe Thunderstorm Warning Destructive damage threat	FGF	Mahnomen, Norman, Polk, Red Lake	62 min
Aug 8, 4:01 AM CDT	Tornado Warning Tornado observed	FGF	Grand Forks	14 min
Aug 8, 4:12 AM CDT	Tornado Warning	FGF	Marshall, Polk	33 min
Aug 8, 4:16 AM CDT	Tornado Warning	FGF	Norman, Polk	29 min
Aug 8, 4:28 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Marshall, Pennington, Polk, Red Lake	62 min
Aug 8, 4:43 AM CDT	Tornado Warning	FGF	Becker, Clay, Mahnomen, Norman, Polk	32 min
Aug 8, 4:49 AM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall, Roseau	56 min
Aug 8, 5:00 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Clearwater, Hubbard, Mahnomen, Norman and 2 more	60 min
Aug 8, 5:02 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Beltrami, Clearwater, Mahnomen, Norman, Polk, Red Lake	58 min
Aug 8, 5:27 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more	63 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.0 hours before the alert went out and 293 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: 2718 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1242 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 11.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 8, 1:18 AM CDT	Mesoscale Discussion	SPC	Kittson	87 min
Aug 8, 4:31 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Cass, Clay, Clearwater, Douglas and 16 more	89 min
Aug 7, 7:39 PM CDT	Mesoscale Discussion	SPC	Adams, Benson, Billings, Bottineau, Bowman, Burke and 30 more	2 hr
Aug 7, 8:02 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Benson, Billings, Bottineau, Bowman, Burke and 26 more	7 hr
Aug 7, 10:30 PM CDT	Mesoscale Discussion	SPC	Billings, Bottineau, Dunn, Golden Valley, McHenry, McKenzie and 8 more	2 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2025 Severe Thunderstorm Watches in Minnesota, 2025 Every severe thunderstorm watch 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.