Alert archive / North Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 138, NWS Grand Forks, ND

August 28, 20244 counties in North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 28, 2024, 10:54 PM CDT for 4 counties in 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
Aug 28, 2024, 10:54 PM CDT (03:54 UTC)
Expired
Aug 29, 2024, 12:00 AM CDT
In force
66 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Barnes County, ND, Cass County, ND, Griggs County, ND, Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 53 km from the middle of the area, began a volume at 03:56 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.9 hours before the alert went out and 223 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2024-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2577 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2024-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2577 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1173 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.8

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 Aug 28, 9:55 PM CDT, 59 minutes earlier.

Area forecast discussion, Aug 28, 9:55 PM CDT, 59 minutes before
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Hazardous weather outlook, Aug 28, 9:30 PM CDT, 1 hour 24 minutes before
Hazardous Weather Outlook
National Weather Service Grand Forks ND
930 PM CDT Wed Aug 28 2024

NDZ014-015-024-026-028-038-049-052-300230-
Benson-Ramsey-Eddy-Nelson-Griggs-Barnes-Ransom-Sargent-
930 PM CDT Wed Aug 28 2024

This hazardous weather outlook is for portions of eastern North
Dakota.

.DAY ONE...Tonight

There is a level 2 out of 5 risk for severe weather over parts of
eastern North Dakota overnight, with the main hazards being hail
up to ping pong balls and wind gusts to 60 mph.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thursday...Strong Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

MNZ001>005-007-008-013>015-022-027-029-NDZ006>008-016-027-029-030-
039-053-054-300230-
West Polk-Norman-Clay-Kittson-Roseau-West Marshall-East Marshall-
Pennington-Red Lake-East Polk-Mahnomen-West Becker-Wilkin-Towner-
Cavalier-Pembina-Eastern Walsh-Grand Forks-Steele-Traill-Cass-
Richland-Western Walsh-
930 PM CDT Wed Aug 28 2024

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

.DAY ONE...Tonight

There is a level 1 out of 5 risk for severe weather over parts of
eastern North Dakota overnight, with the main hazards being hail
up to ping pong balls and wind gusts to 60 mph.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thursday...Strong Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

MNZ006-009-016-017-023-024-028-030>032-040-300230-
Lake Of The Woods-North Beltrami-North Clearwater-South Beltrami-
South Clearwater-Hubbard-East Becker-West Otter Tail-
East Otter Tail-Wadena-Grant-
930 PM CDT Wed Aug 28 2024

This hazardous weather outlook is for portions of west central
and northwest Minnesota.

.DAY ONE...Tonight

Scattered strong thunderstorms expected across the region. The
main hazard will be lightning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thursday...Level 2 out of 5 Severe Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today.

In the hours before

Special weather statement, Aug 28, 10:08 PM CDT, 46 minutes before
Special Weather Statement
National Weather Service Grand Forks ND
1008 PM CDT Wed Aug 28 2024

NDZ028-038-290415-
Griggs ND-Barnes ND-
1008 PM CDT Wed Aug 28 2024

...STRONG THUNDERSTORMS WILL IMPACT SOUTHERN GRIGGS AND BARNES
COUNTIES THROUGH 1115 PM CDT...

At 1007 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms near Spiritwood Lake, or 12 miles northeast of
Jamestown, moving east at 35 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Valley City, Wimbledon, Sanborn, Hannaford, Oriska, Dazey, and
Rogers.

This includes Interstate 94 in North Dakota between mile markers 272
and 303.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4733 9847 4735 9799 4733 9799 4732 9796
      4724 9796 4724 9784 4679 9774 4679 9844
      4698 9844 4698 9847
TIME...MOT...LOC 0307Z 257DEG 28KT 4703 9848

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

JR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 10:08 PM CDTSpecial Weather StatementFGFBarnes67 min
Aug 28, 10:21 PM CDTSevere Thunderstorm WarningFGFBarnes, Griggs39 min
Aug 28, 11:54 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass, Steele, Traill66 min
Aug 29, 12:36 AM CDTSpecial Weather StatementFGFRamsey39 min
Aug 29, 12:41 AM CDTSevere Thunderstorm WarningFGFBenson49 min
Aug 29, 1:02 AM CDTSevere Thunderstorm WarningFGFBarnes, Cass43 min
Aug 29, 1:15 AM CDTSpecial Weather StatementFGFTowner60 min
Aug 29, 1:44 AM CDTSpecial Weather StatementFGFCass46 min
Aug 29, 2:20 AM CDTSpecial Weather StatementFGFBenson40 min
Aug 29, 3:05 AM CDTSpecial Weather StatementFGFGrand Forks40 min
Aug 29, 3:13 AM CDTSevere Thunderstorm WarningFGFGrand Forks, Steele, Traill47 min
Aug 29, 3:34 AM CDTSevere Thunderstorm Warning Considerable damage threatFGFGrand Forks, Traill56 min
Aug 29, 5:09 AM CDTSevere Thunderstorm WarningFGFGrand Forks, Griggs, Nelson, Steele51 min
Aug 29, 7:10 AM CDTAreal Flood AdvisoryFGFGrand Forks, Steele, Traill4 hr
Aug 29, 8:37 AM CDTFlash Flood WarningFGFGrand Forks5 hr
Aug 29, 4:45 AM CDTSevere Thunderstorm WarningFGFNorman, Pennington, Polk, Red Lake45 min
Aug 29, 5:22 AM CDTFlash Flood WarningFGFPolk4 hr
Aug 29, 5:24 AM CDTSevere Thunderstorm WarningFGFPolk, Red Lake51 min
Aug 29, 6:07 AM CDTSpecial Weather StatementFGFClearwater38 min
Aug 29, 10:58 AM CDTSpecial Weather StatementFGFRed Lake32 min
Aug 29, 1:54 PM CDTSpecial Weather StatementFGFWadena36 min
Aug 29, 2:29 PM CDTSpecial Weather StatementFGFOtter Tail16 min
Aug 29, 4:47 PM CDTSpecial Weather StatementFGFHubbard28 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2024Every 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.