Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 176, NWS Grand Forks, ND

September 3, 20266 counties in Minnesota; Traill County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 3, 2026, 2:39 PM CDT for 6 counties in Minnesota; Traill County, North Dakota. It was in force for 66 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: Sep 3, 2026, 2:39 PM CDT (19:39 UTC)
Expired: Sep 3, 2026, 3:45 PM CDT
In force: 66 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 78 km from the middle of the area, began a volume at 19:38 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 3, 12:12 PM CDT	Severe Thunderstorm Watch	SPC	11 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 7.7 hours before the alert went out and 243 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 3, 12:47 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Sep 3, 12:47 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Sep 3, 5:45 AM CDT, 8 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
545 AM CDT Thu Sep 3 2026

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-041045-
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-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
Western Walsh-
545 AM CDT Thu Sep 3 2026

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 2 out of 5 risk for severe thunderstorms this
afternoon and evening for much of eastern North Dakota and
northwest and west central Minnesota. The main hazards will be
large hail to golf balls, 60 mph wind gusts. There is a chance for
a isolated tornado.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

In the hours before

Local storm report, Sep 3, 12:10 PM CDT, 2 hours 29 minutes before

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Local storm report, Sep 3, 12:46 PM CDT, 1 hour 53 minutes before

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Local storm report, Sep 3, 1:03 PM CDT, 1 hour 36 minutes before

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Local storm report, Sep 3, 1:14 PM CDT, 1 hour 25 minutes before

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Local storm report, Sep 3, 1:55 PM CDT, 44 minutes before

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Local storm report, Sep 3, 2:09 PM CDT, 30 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
Sep 3, 12:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Norman, Polk	67 min
Sep 3, 1:49 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Norman, Pennington, Polk, Red Lake	56 min
Sep 3, 2:26 PM CDT	Areal Flood Advisory	FGF	Polk	3 hr
Sep 3, 3:01 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	44 min
Sep 3, 3:14 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Clearwater, Mahnomen, Norman, Polk	61 min
Sep 3, 3:23 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Marshall, Pennington, Roseau	67 min
Sep 3, 3:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Beltrami, Lake of the Woods, Roseau	67 min
Sep 3, 4:01 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 2 more	59 min
Sep 3, 4:06 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater	54 min
Sep 3, 4:50 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard	55 min
Sep 3, 6:35 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wilkin	55 min
Sep 3, 11:06 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Ramsey	54 min
Sep 3, 11:31 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson, Ramsey, Walsh	59 min
Sep 3, 12:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Grand Forks, Griggs, Nelson, Steele, Traill	62 min
Sep 3, 12:55 PM CDT	Severe Thunderstorm Warning	FGF	Griggs, Steele	65 min
Sep 3, 2:08 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Steele, Traill	53 min
Sep 3, 6:22 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Walsh	35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2026 Severe Thunderstorm Warnings in North Dakota, 2026 Every 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.