Alert archive / Minnesota / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 36, NWS Grand Forks, ND

June 7, 2023Clay County, Minnesota; Cass County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 7, 2023, 4:39 PM CDT for Clay County, Minnesota; Cass County, North Dakota. It was in force for 51 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, 4:39 PM CDT (21:39 UTC)
Expired: Jun 7, 2023, 5:30 PM CDT
In force: 51 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clay County, MN, Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 77 km from the middle of the area, began a volume at 21:42 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, 9.7 hours before the alert went out and 292 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, 2:44 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Jun 7, 2:44 PM CDT, 1 hour 55 minutes before

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Hazardous weather outlook, Jun 7, 4:33 PM CDT, 6 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
433 PM CDT Wed Jun 7 2023

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-081400-
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-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
Western Walsh-
433 PM CDT Wed Jun 7 2023

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

.DAY ONE...Tonight

Isolated to scattered thunderstorms will continue into the evening
hours. Isolated severe storms will be possible into early evening
hours. Quarter size hail and damaging wind gusts to 60 mph will be
the main severe threats. Brief heavy rain is also possible with
the stronger storms.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Showers and thunderstorms are likely Thursday, with best chances
during the afternoon and evening period along and west of the Red
River Valley. Isolated severe thunderstorms will be possible during
the afternoon and early evening, with ping pong ball size hail and
damaging wind gusts to 60 mph the main threats. Heavy rain will also
be possible with thunderstorms that develop,and localized excessive
rainfall impacts may occur.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Special weather statement, Jun 7, 1:56 PM CDT, 2 hours 43 minutes before

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Special weather statement, Jun 7, 2:29 PM CDT, 2 hours 10 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

Local storm report, Jun 7, 4:02 PM CDT, 37 minutes before

Preliminary Local Storm Report
National Weather Service Grand Forks ND
402 PM CDT Wed Jun 7 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0358 PM     Hail             Finley                  47.51N 97.84W
06/07/2023  M1.00 inch       Steele             ND   Law Enforcement

            Report of nickel to quarter size hail by
            sheriff deparment.

&&

Local storm report, Jun 7, 4:16 PM CDT, 23 minutes before

Preliminary Local Storm Report
National Weather Service Grand Forks ND
416 PM CDT Wed Jun 7 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0335 PM     Hail             3 N Finley              47.56N 97.84W
06/07/2023  E1.00 inch       Steele             ND   Law Enforcement

            Law enforcement relayed report of windshield
            damage to vehicle from Quarter size hail.

&&

Special weather statement, Jun 7, 4:23 PM CDT, 16 minutes before

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

MNZ003-NDZ039-072200-
Clay MN-Cass ND-
423 PM CDT Wed Jun 7 2023

...A strong thunderstorm will impact portions of northwestern Clay
and northeastern Cass Counties through 500 PM CDT...

At 423 PM CDT, Doppler radar was tracking a strong thunderstorm near
Argusville, or 15 miles north of Fargo, moving south 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...
Northern Fargo, West Fargo, Mapleton, Harwood, Reile's Acres, Oakport
and Argusville.

This includes the following highways...
 Interstate 29 between mile markers 65 and 86.
 Interstate 94 in North Dakota between mile markers 336 and 344.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4716 9706 4716 9682 4715 9684 4715 9680
      4687 9673 4687 9712
TIME...MOT...LOC 2123Z 359DEG 14KT 4709 9693

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, 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, 2:35 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson	40 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 Minnesota, 2023 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.