Alert archive / North Dakota / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 32, NWS Grand Forks, ND

June 7, 2023Grand Forks County, Nelson County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 7, 2023, 2:35 PM CDT for Grand Forks County, Nelson County, North Dakota. It was in force for 40 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: Jun 7, 2023, 2:35 PM CDT (19:35 UTC)
Expired: Jun 7, 2023, 3:15 PM CDT
In force: 40 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grand Forks County, ND, Nelson County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 58 km from the middle of the area, began a volume at 19:38 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 12:00Z, 7.6 hours before the alert went out and 252 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: 49 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 1966 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 7, 12:35 PM CDT, 2 hours earlier.

Area forecast discussion, Jun 7, 12:35 PM CDT, 2 hours before

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Hazardous weather outlook, Jun 7, 4:27 AM CDT, 10 hours 8 minutes before

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In the hours before

Special weather statement, Jun 7, 1:56 PM CDT, 39 minutes before

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Special weather statement, Jun 7, 2:29 PM CDT, 6 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
229 PM CDT Wed Jun 7 2023

NDZ026-027-072000-
Nelson ND-Grand Forks ND-
229 PM CDT Wed Jun 7 2023

...A strong thunderstorm will impact portions of west central Grand
Forks and east central Nelson Counties through 300 PM CDT...

At 229 PM CDT, Doppler radar was tracking a strong thunderstorm over
Niagara, or 36 miles southwest of Grafton, moving southeast at 15
mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Larimore, Petersburg, Niagara, McCanna and Logan Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4801 9805 4809 9781 4789 9751 4773 9795
TIME...MOT...LOC 1929Z 334DEG 14KT 4799 9788

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

Rick

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 7:28 PM CDT	Special Weather Statement	FGF	Otter Tail	32 min
Jun 6, 7:43 PM CDT	Special Weather Statement	FGF	Grant	32 min
Jun 7, 4:39 PM CDT	Severe Thunderstorm Warning	FGF	Clay	51 min
Jun 7, 5:31 PM CDT	Special Weather Statement	FGF	Clay	29 min
Jun 7, 1:56 PM CDT	Special Weather Statement	FGF	Nelson	34 min
Jun 7, 2:29 PM CDT	Special Weather Statement	FGF	Grand Forks	31 min
Jun 7, 3:12 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson, Steele	48 min
Jun 7, 3:57 PM CDT	Severe Thunderstorm Warning	FGF	Griggs, Steele	48 min
Jun 7, 4:23 PM CDT	Special Weather Statement	FGF	Cass	37 min
Jun 7, 4:35 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele	40 min
Jun 7, 5:21 PM CDT	Special Weather Statement	FGF	Barnes	24 min
Jun 7, 5:44 PM CDT	Special Weather Statement	FGF	Barnes	46 min
Jun 7, 5:55 PM CDT	Special Weather Statement	FGF	Richland	50 min
Jun 7, 6:04 PM CDT	Special Weather Statement	FGF	Barnes	41 min
Jun 7, 6:08 PM CDT	Tornado Warning	FGF	Barnes	20 min
Jun 7, 6:20 PM CDT	Severe Thunderstorm Warning	FGF	Richland	40 min
Jun 7, 6:25 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom	21 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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.