Alert archive / Minnesota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 74, NWS Grand Forks, ND

July 13, 2024Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 13, 2024, 5:41 PM CDT for Polk 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 13, 2024, 5:41 PM CDT (22:41 UTC)
Expired: Jul 13, 2024, 6:45 PM CDT
In force: 64 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 74 km from the middle of the area, began a volume at 22:41 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
Jul 13, 5:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.7 hours before the alert went out and 246 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: 1055 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 13, 3:41 PM CDT, 2 hours earlier.

Area forecast discussion, Jul 13, 3:41 PM CDT, 2 hours before

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Hazardous weather outlook, Jul 13, 7:50 AM CDT, 9 hours 51 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
750 AM CDT Sat Jul 13 2024

MNZ001-004>009-013>017-022>024-027-028-031-032-NDZ006>008-014>016-
024-026>029-054-141300-
West Polk-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-East Otter Tail-Wadena-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Western Walsh-
750 AM CDT Sat Jul 13 2024

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 today
into tonight. The main hazards will be hail to 2 inches, 70 mph
wind gusts.  Tornado is possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Sunday...Level 2 out of 5 Severe Thunderstorm Risk for strong
winds and large hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

MNZ002-003-029-030-040-NDZ030-038-039-049-052-053-141300-
Norman-Clay-Wilkin-West Otter Tail-Grant-Traill-Barnes-Cass-
Ransom-Sargent-Richland-
750 AM CDT Sat Jul 13 2024

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

.DAY ONE...Today and Tonight

A heat advisory is also in effect for this afternoon with heat
indicies expected to crest 100 degrees.

There is a level 2 out of 5 risk for severe thunderstorms today
into tonight. The main hazards will be hail to 2 inches, 70 mph
wind gusts. Tornado is possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Sunday...Level 2 out of 5 Severe Thunderstorm Risk for strong
winds and large hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:54 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Towner	66 min
Jul 13, 12:14 AM CDT	Special Weather Statement	FGF	Barnes, Ransom	46 min
Jul 13, 1:03 AM CDT	Special Weather Statement	FGF	Cass, Ransom, Sargent	42 min
Jul 13, 1:54 AM CDT	Special Weather Statement	FGF	Cass, Richland, Sargent	66 min
Jul 13, 6:39 AM CDT	Special Weather Statement	FGF	Benson	51 min
Jul 13, 7:30 AM CDT	Special Weather Statement	FGF	Pierce	30 min
Jul 13, 6:24 PM CDT	Severe Thunderstorm Warning	FGF	Traill	51 min
Jul 13, 6:53 PM CDT	Tornado Warning Tornado observed	FGF	Richland	52 min
Jul 13, 3:21 AM CDT	Special Weather Statement	FGF	Grant, Otter Tail, Wilkin	24 min
Jul 13, 3:47 AM CDT	Special Weather Statement	FGF	Grant, Otter Tail, Wadena	58 min
Jul 13, 7:22 AM CDT	Special Weather Statement	FGF	Kittson	38 min
Jul 13, 8:49 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods	56 min
Jul 13, 9:51 AM CDT	Special Weather Statement	FGF	Beltrami	24 min
Jul 13, 10:57 AM CDT	Special Weather Statement	FGF	Beltrami	33 min
Jul 13, 6:06 PM CDT	Special Weather Statement	FGF	Lake of the Woods	39 min
Jul 13, 6:17 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Polk	58 min
Jul 13, 6:59 PM CDT	Special Weather Statement	FGF	Mahnomen	46 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2024 Every severe thunderstorm warning in 2024

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.