Alert archive / North Dakota / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 72, NWS Grand Forks, ND

July 12, 2024Benson County, Towner County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 12, 2024, 8:54 PM CDT for Benson County, Towner 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: Jul 12, 2024, 8:54 PM CDT (01:54 UTC)
Expired: Jul 12, 2024, 10:00 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 Benson County, ND, Towner County, ND

The radar

The Minot AFB radar (KMBX), 115 km from the middle of the area, began a volume at 01:55 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, 1.9 hours before the alert went out and 207 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: 4053 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.4

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 12, 7:17 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Jul 12, 7:17 PM CDT, 1 hour 37 minutes before

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Hazardous weather outlook, Jul 12, 3:40 PM CDT, 5 hours 14 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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 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, 5:41 PM CDT	Severe Thunderstorm Warning	FGF	Polk	64 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 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.