Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 179, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 2, 2019, 7:27 PM CDT for Grant County, Otter Tail County, Wilkin County, Minnesota; Richland County, North Dakota. It was in force for 33 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
- Sep 2, 2019, 7:27 PM CDT (00:27 UTC)
- Expired
- Sep 2, 2019, 8:00 PM CDT
- In force
- 33 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Grant County, MN, Otter Tail County, MN, Wilkin County, MN, Richland County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 163 km from the middle of the area, began a volume at 00:28 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 2, 4:06 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 260 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.
- Mixed-layer CAPE
- 44 J/kg
- Mixed-layer CIN
- -273 J/kg
- Mixed-layer LCL
- 957 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 380 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
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 Sep 2, 6:46 PM CDT, 41 minutes earlier.
Area forecast discussion, Sep 2, 6:46 PM CDT, 41 minutes before
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</html>Hazardous weather outlook, Sep 2, 1:54 PM CDT, 5 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Grand Forks ND 154 PM CDT Mon Sep 2 2019 MNZ001>003-015-022>024-027>032-040-NDZ006-007-014-015-024-026>030- 038-039-049-052>054-031900- West Polk-Norman-Clay-East Polk-Mahnomen-South Clearwater-Hubbard- West Becker-East Becker-Wilkin-West Otter Tail-East Otter Tail- Wadena-Grant-Towner-Cavalier-Benson-Ramsey-Eddy-Nelson- Grand Forks-Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent- Richland-Western Walsh County- 154 PM CDT Mon Sep 2 2019 This hazardous weather outlook is for portions of eastern North Dakota, west central and northwest Minnesota. .DAY ONE...This Afternoon and Tonight Severe thunderstorms are expected this afternoon and evening across much of the region. Risks will include damaging winds to 75 mph, hail to 2 inches, and the possibility for tornadoes. Isolated to scattered severe storms may develop this afternoon and early evening. Then a large thunderstorm complex will push across eastern North Dakota during the late afternoon to early evening and into Minnesota by early to mid evening. General storm motion will be northwest to southeast. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. MNZ004>009-013-014-016-017-NDZ008-016-031900- Kittson-Roseau-Lake Of The Woods-West Marshall-East Marshall- North Beltrami-Pennington-Red Lake-North Clearwater- South Beltrami-Pembina-Eastern Walsh County- 154 PM CDT Mon Sep 2 2019 This hazardous weather outlook is for portions of eastern North Dakota and northwest Minnesota. .DAY ONE...This Afternoon and Tonight Severe thunderstorms are possible late this afternoon trough this evening with damaging wind gusts to 75 mph and hail to 2 inches being the main risks. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
In the hours before
Special weather statement, Sep 2, 6:23 PM CDT, 1 hour 4 minutes before
Special Weather Statement
National Weather Service Grand Forks ND
623 PM CDT Mon Sep 2 2019
MNZ002-003-022-023-027-028-030-031-030030-
West Becker MN-East Otter Tail MN-East Becker MN-Clay MN-Mahnomen MN-
South Clearwater MN-Norman MN-West Otter Tail MN-
623 PM CDT Mon Sep 2 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CLAY...NORMAN...NORTH
CENTRAL OTTER TAIL...SOUTHERN MAHNOMEN...BECKER AND SOUTH CENTRAL
CLEARWATER COUNTIES UNTIL 730 PM CDT...
At 622 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hadler to near Averill. Movement was
southeast at 50 mph.
Penny size hail and winds in excess of 40 mph will be possible with
these storms.
Strong thunderstorms will be near...
Averill around 630 PM CDT.
Gary around 635 PM CDT.
Hawley and Twin Valley around 640 PM CDT.
Faith around 645 PM CDT.
Dale, Flom and Mahnomen around 650 PM CDT.
Other locations impacted by these storms include Many Point Scout
Camp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.
&&
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northwestern and west central Minnesota...and southeastern North
Dakota.
LAT...LON 4652 9548 4705 9682 4713 9682 4746 9652
4717 9531
TIME...MOT...LOC 2322Z 293DEG 42KT 4737 9648 4696 9665
NCLocal storm report, Sep 2, 6:33 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
633 PM CDT MON SEP 2 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0605 PM TSTM WND DMG HARWOOD 46.98N 96.88W
09/02/2019 CASS ND PUBLIC
REPORT OF MULTIPLE BRANCHES OF 2 TO 4 INCHES IN DIAMETER
DOWN IN TOWN. TIME ESTIMATED FROM RADAR.
&&
WASILEWSKILocal storm report, Sep 2, 6:36 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
636 PM CDT MON SEP 2 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0611 PM TSTM WND GST 2 NW FARGO 46.90N 96.85W
09/02/2019 M67.00 MPH Cass ND MESONET
NORTH DAKOTA AGRICULTURAL WEATHER NETWORK NDAWN
&&
HOPKINSLocal storm report, Sep 2, 6:38 PM CDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
638 PM CDT MON SEP 2 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0609 PM TSTM WND GST 3 NW FARGO 46.91N 96.86W
09/02/2019 M71 MPH Cass ND ASOS
FARGO HECTOR INTERNATIONAL AIRPORT
&&
HOPKINSLocal storm report, Sep 2, 6:42 PM CDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
642 PM CDT MON SEP 2 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0120 PM NON-TSTM WND GST 2 SE DILWORTH 46.85N 96.67W
09/02/2019 M87 MPH Clay MN MESONET
WIND GUST TO 87 MPH MEASURE AT DILWORTH RWIS.
&&
CJONESLocal storm report, Sep 2, 6:43 PM CDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
643 PM CDT MON SEP 2 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0615 PM TSTM WND DMG WEST FARGO 46.87N 96.90W
09/02/2019 CASS ND TRAINED SPOTTER
TWO TO THREE-INCH TREE BRANCHES BROKE OFF TREES. POWER
WENT OUT.
&&
HOPKINSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 7:43 PM CDT | Special Weather Statement | FGF | Otter Tail, Wadena | 32 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2019Severe Thunderstorm Warnings in North Dakota, 2019Every severe thunderstorm warning in 2019
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.