Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 72, NWS Grand Forks, ND

July 28, 2021Richland County, North Dakota; Wilkin County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 28, 2021, 3:43 AM CDT for Richland County, North Dakota; Wilkin County, Minnesota. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2021, 3:43 AM CDT (08:43 UTC)
Expired: Jul 28, 2021, 4:22 AM CDT
In force: 39 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Wilkin County, MN, Richland County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 122 km from the middle of the area, began a volume at 08:45 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.

What was reported inside it

Time	Report	Where	Remark
Jul 28, 3:50 AM CDT	HAIL 1	3 Wnw Colfax, ND	LARGE WIND DRIVEN HAIL DAMAGED FIELDS ACROSS PORTIONS OF WESTERN AND CENTRAL COLFAX TOWNSHIP BEFORE 4AM CDT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.7 hours before the alert went out and 214 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: 3728 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1430 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted.

123 
WUUS53 KFGF 280843
SVRFGF
MNC167-NDC077-280945-
/O.NEW.KFGF.SV.W.0072.210728T0843Z-210728T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
343 AM CDT Wed Jul 28 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northwestern Wilkin County in west central Minnesota...
  Northeastern Richland County in southeastern North Dakota...

* Until 445 AM CDT.

* At 343 AM CDT, a severe thunderstorm was located near Walcott, or
  23 miles south of Fargo, moving east at 30 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Walcott around 350 AM CDT.
  Colfax and Christine around 400 AM CDT.

Other locations in the path of this severe thunderstorm include
Wolverton, Abercrombie, Galchutt, Kent and McCauleyville.

This includes Interstate 29 between mile markers 31 and 46.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4650 9712 4663 9704 4657 9638 4623 9651
TIME...MOT...LOC 0843Z 290DEG 26KT 4655 9700 

HAIL...1.25IN
WIND...60MPH
 
$$

JR

2 follow-up statements

084 
WWUS53 KFGF 280914
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
414 AM CDT Wed Jul 28 2021

NDC077-280924-
/O.CAN.KFGF.SV.W.0072.000000T0000Z-210728T0945Z/
Richland ND-
414 AM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RICHLAND COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4623 9651 4627 9660 4633 9660 4635 9665
      4641 9668 4642 9670 4643 9670 4644 9672
      4646 9671 4649 9674 4654 9675 4654 9674
      4658 9676 4658 9675 4661 9677 4657 9638
TIME...MOT...LOC 0914Z 290DEG 26KT 4647 9669 

$$

MNC167-280945-
/O.CON.KFGF.SV.W.0072.000000T0000Z-210728T0945Z/
Wilkin MN-
414 AM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR NORTHWESTERN WILKIN COUNTY...

At 414 AM CDT, a severe thunderstorm was located over McCauleyville,
or 14 miles north of Wahpeton, moving east at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Kent and Brushvale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4623 9651 4627 9660 4633 9660 4635 9665
      4641 9668 4642 9670 4643 9670 4644 9672
      4646 9671 4649 9674 4654 9675 4654 9674
      4658 9676 4658 9675 4661 9677 4657 9638
TIME...MOT...LOC 0914Z 290DEG 26KT 4647 9669 

HAIL...0.88IN
WIND...60MPH
 
$$

JR

409 
WWUS53 KFGF 280922
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
422 AM CDT Wed Jul 28 2021

MNC167-280932-
/O.CAN.KFGF.SV.W.0072.000000T0000Z-210728T0945Z/
Wilkin MN-
422 AM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WILKIN COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 4623 9651 4627 9660 4633 9660 4635 9665
      4641 9668 4642 9670 4643 9670 4644 9672
      4646 9671 4649 9674 4654 9675 4654 9674
      4658 9676 4658 9675 4661 9677 4657 9638
TIME...MOT...LOC 0918Z 290DEG 26KT 4645 9661 

$$

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 3:12 AM CDT	Special Weather Statement	FGF	Richland	63 min
Jul 28, 4:12 AM CDT	Special Weather Statement	FGF	Grant	63 min
Jul 28, 4:20 AM CDT	Special Weather Statement	FGF	Clay	55 min
Jul 28, 4:31 AM CDT	Special Weather Statement	FGF	Wadena	29 min
Jul 28, 4:40 AM CDT	Special Weather Statement	FGF	Mahnomen	65 min
Jul 28, 5:15 AM CDT	Special Weather Statement	FGF	Hubbard	60 min
Jul 28, 6:00 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clearwater, Hubbard	60 min
Jul 28, 7:04 AM CDT	Special Weather Statement	FGF	Beltrami	56 min
Jul 28, 8:32 AM CDT	Special Weather Statement	FGF	Hubbard	43 min
Jul 28, 9:44 AM CDT	Special Weather Statement	FGF	Beltrami	61 min
Jul 28, 9:56 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	19 min
Jul 28, 11:20 AM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	55 min
Jul 28, 6:03 PM CDT	Special Weather Statement	FGF	Beltrami	27 min
Jul 28, 6:40 PM CDT	Special Weather Statement	FGF	Beltrami	35 min
Jul 28, 6:47 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	28 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2021 Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.