Alert archive / Minnesota / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 109, NWS Grand Forks, ND

July 26, 2023Polk County, Red Lake County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 26, 2023, 11:41 PM CDT for Polk County, Red Lake County, Minnesota. It was in force for 64 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 26, 2023, 11:41 PM CDT (04:41 UTC)
Expired: Jul 27, 2023, 12:45 AM CDT
In force: 64 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Polk County, MN, Red Lake County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 87 km from the middle of the area, began a volume at 04:44 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

International Fa, MN (KINL), launched 00:00Z, 4.7 hours before the alert went out and 234 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: 828 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1914 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

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 26, 7:04 PM CDT, 4 hours 37 minutes earlier.

Area forecast discussion, Jul 26, 7:04 PM CDT, 4 hours 37 minutes before

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Hazardous weather outlook, Jul 26, 8:22 AM CDT, 15 hours 19 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
822 AM CDT Wed Jul 26 2023

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-271330-
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-
822 AM CDT Wed Jul 26 2023

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

.DAY ONE...Today and Tonight

Isolated severe thunderstorms are possible across much the region
this afternoon and evening. The main hazards associated with the
strongest storms will be large hail up to half dollar and
damaging wind gusts up to 60 mph.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Isolated severe thunderstorms are possible across portions of the
region on Thursday, primarily along and south of I 94. The main
hazards will be hail up to 1 inch and wind gusts to 60 mph.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jul 26, 10:07 PM CDT, 1 hour 34 minutes before

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Special weather statement, Jul 26, 10:21 PM CDT, 1 hour 20 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 26, 10:21 PM CDT	Special Weather Statement	FGF		39 min
Jul 26, 11:50 PM CDT	Special Weather Statement	FGF	Beltrami	40 min
Jul 26, 11:58 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Pennington, Red Lake	30 min
Jul 26, 11:59 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods	46 min
Jul 27, 12:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Beltrami, Clearwater, Polk	66 min
Jul 27, 1:15 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	39 min
Jul 27, 1:54 AM CDT	Special Weather Statement	FGF	Beltrami	51 min
Jul 27, 2:09 AM CDT	Special Weather Statement	FGF	Clay	51 min
Jul 27, 2:37 AM CDT	Special Weather Statement	FGF	Clay	23 min
Jul 26, 10:07 PM CDT	Special Weather Statement	FGF	Richland	23 min
Jul 27, 1:06 AM CDT	Special Weather Statement	FGF	Ransom	39 min
Jul 27, 1:35 AM CDT	Special Weather Statement	FGF	Cass	40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2023 Every severe thunderstorm warning in 2023

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.