Alert archive / Minnesota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 135, NWS Grand Forks, ND

July 27, 2025Grant County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 27, 2025, 4:05 PM CDT for Grant County, Minnesota. It was in force for 40 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: Jul 27, 2025, 4:05 PM CDT (21:05 UTC)
Expired: Jul 27, 2025, 4:45 PM CDT
In force: 40 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Grant County, MN

The radar

The Aberdeen radar (KABR), 194 km from the middle of the area, began a volume at 21:08 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

Aberdeen, SD (KABR), launched 12:00Z, 9.1 hours before the alert went out and 219 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: 1882 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jul 27, 3:30 PM CDT, 35 minutes earlier.

Area forecast discussion, Jul 27, 3:30 PM CDT, 35 minutes before

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Hazardous weather outlook, Jul 27, 2:20 PM CDT, 1 hour 45 minutes before

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In the hours before

Local storm report, Jul 27, 10:52 AM CDT, 5 hours 13 minutes before

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Local storm report, Jul 27, 1:14 PM CDT, 2 hours 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 1:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Polk	64 min
Jul 27, 2:35 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Beltrami, Clearwater, Kittson, Marshall, Norman, Pennington and 3 more	55 min
Jul 27, 3:25 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Pennington, Polk, Red Lake	65 min
Jul 27, 4:24 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater	66 min
Jul 27, 4:28 AM CDT	Special Weather Statement	FGF	Becker, Hubbard	62 min
Jul 27, 12:25 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Benson, Eddy, Griggs, Nelson, Ramsey	65 min
Jul 27, 12:29 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele	61 min
Jul 27, 1:12 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Barnes, Cass, Grand Forks, Griggs, Nelson, Steele and 1 more	63 min
Jul 27, 1:16 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 2 more	59 min
Jul 27, 1:24 AM CDT	Tornado Warning	FGF	Grand Forks, Griggs, Nelson, Steele	36 min
Jul 27, 1:54 AM CDT	Tornado Warning	FGF	Grand Forks, Steele, Traill	36 min
Jul 27, 5:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Benson, Eddy, Ramsey, Towner	64 min
Jul 27, 6:58 AM CDT	Special Weather Statement	FGF	Towner	32 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.