Alert archive / North Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 112, NWS Grand Forks, ND

July 31, 2024Ramsey County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2024, 6:11 AM CDT for Ramsey County, North Dakota. It was in force for 34 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 31, 2024, 6:11 AM CDT (11:11 UTC)
Expired: Jul 31, 2024, 6:45 AM CDT
In force: 34 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Ramsey County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 133 km from the middle of the area, began a volume at 11:10 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, 11.2 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-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: 1997 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 2152 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.2

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 31, 3:31 AM CDT, 2 hours 40 minutes earlier.

Area forecast discussion, Jul 31, 3:31 AM CDT, 2 hours 40 minutes before

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Hazardous weather outlook, Jul 31, 5:57 AM CDT, 14 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
557 AM CDT Wed Jul 31 2024

MNZ029>032-040-NDZ049-052-053-011100-
Wilkin-West Otter Tail-East Otter Tail-Wadena-Grant-Ransom-
Sargent-Richland-
557 AM CDT Wed Jul 31 2024

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

.DAY ONE...Today and Tonight

There is a level 2 out of 5 risk for severe thunderstorms. This
is for midday today through early evening. The main hazards will
be hail to golf ball size and wind gusts to 70 mph. An isolated
tornado is possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

MNZ001>009-013>017-022>024-027-028-NDZ006>008-014>016-024-026>030-
038-039-054-011100-
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-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Western Walsh-
557 AM CDT Wed Jul 31 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 1 out of 5 risk for severe thunderstorms. This
is for today through early evening. The main hazards will be hail
to 1 inch and wind gusts to 60 mph.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today.

In the hours before

Special weather statement, Jul 31, 6:03 AM CDT, 8 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
603 AM CDT Wed Jul 31 2024

NDZ015-311145-
Ramsey ND-
603 AM CDT Wed Jul 31 2024

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL RAMSEY COUNTY THROUGH
645 AM CDT...

At 603 AM CDT, Doppler radar was tracking a strong thunderstorm over
Webster, or 9 miles north of Devils Lake, moving northeast at 50 mph.

HAZARD...Wind gusts up to 40 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...
Devils Lake, Edmore, Webster, Lawton, Garske, and Derrick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4854 9847 4855 9832 4853 9832 4832 9833
      4806 9887 4828 9910
TIME...MOT...LOC 1103Z 237DEG 42KT 4825 9891

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

Riddle

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 9:21 PM CDT	Special Weather Statement	FGF	Towner	24 min
Jul 30, 9:45 PM CDT	Special Weather Statement	FGF	Towner	45 min
Jul 31, 6:03 AM CDT	Special Weather Statement	FGF	Ramsey	42 min
Jul 31, 6:45 AM CDT	Severe Thunderstorm Warning	FGF	Ramsey	45 min
Jul 31, 10:35 AM CDT	Special Weather Statement	FGF	Eddy	40 min
Jul 31, 11:07 AM CDT	Special Weather Statement	FGF	Barnes	38 min
Jul 31, 11:31 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Barnes, Ransom	44 min
Jul 31, 12:11 PM CDT	Special Weather Statement	FGF	Barnes, Ransom	49 min
Jul 31, 12:16 PM CDT	Severe Thunderstorm Warning Destructive damage threat	FGF	Richland, Sargent	44 min
Jul 31, 12:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Richland, Sargent	45 min
Jul 31, 12:54 PM CDT	Special Weather Statement	FGF	Cass, Traill	51 min
Jul 31, 1:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Richland	56 min
Jul 31, 1:42 PM CDT	Special Weather Statement	FGF	Clay, Norman, Polk, Red Lake	48 min
Jul 31, 1:58 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Pennington	47 min
Jul 31, 2:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Becker, Clay, Clearwater, Hubbard, Mahnomen, Otter Tail and 2 more	51 min
Jul 31, 2:54 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 1 more	66 min
Jul 31, 3:24 PM CDT	Special Weather Statement	FGF	Roseau	36 min
Jul 31, 3:59 PM CDT	Special Weather Statement	FGF	Lake of the Woods	31 min
Jul 31, 5:03 PM CDT	Severe Thunderstorm Warning	FGF	Grant, Otter Tail	42 min
Jul 31, 5:28 PM CDT	Severe Thunderstorm Warning	FGF	Grant	47 min
Jul 31, 5:50 PM CDT	Severe Thunderstorm Warning	FGF	Grant	40 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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.