Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 52, NWS Grand Forks, ND

July 19, 2021Clay County, Norman County, Wilkin County, Minnesota; Cass County, Richland County, Traill County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 19, 2021, 2:27 PM CDT for Clay County, Norman County, Wilkin County, Minnesota; Cass County, Richland County, Traill County, North Dakota. It was in force for 63 min. 6 reports 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 19, 2021, 2:27 PM CDT (19:27 UTC)
Expired: Jul 19, 2021, 3:30 PM CDT
In force: 63 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clay County, MN, Norman County, MN, Wilkin County, MN, Cass County, ND, Richland County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 72 km from the middle of the area, began a volume at 19:26 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 19, 2:29 PM CDT	TSTM WND GST 60	1 N Casselton, ND	PEAK WIND MEASURED AT A PERSONAL WEATHER STATION.
Jul 19, 2:29 PM CDT	TSTM WND GST 61	Fargo, ND	MEASURED AT HECTOR INTERNATIONAL AIRPORT /KFAR/.
Jul 19, 2:30 PM CDT	TSTM WND GST 61	Fargo, ND	MEASURED AT HECTOR INTERNATIONAL AIRPORT.
Jul 19, 2:34 PM CDT	TSTM WND DMG	3 Ssw West Fargo, ND	REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Jul 19, 2:50 PM CDT	TSTM WND DMG	3 Sse Moorhead, MN	LARGE TREE BRANCHES AND LIMBS BROKEN DOWN. POWER POLE BROKEN DOWN BY TREE LIMBS. VERY STRONG WINDS OVER A SEVERAL MINUTE PERIOD.
Jul 19, 2:50 PM CDT	TSTM WND DMG	Moorhead, MN	REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.

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 12:00Z, 7.5 hours before the alert went out and 253 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: 654 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

340 
WUUS53 KFGF 191927
SVRFGF
MNC027-107-167-NDC017-077-097-192030-
/O.NEW.KFGF.SV.W.0052.210719T1927Z-210719T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
227 PM CDT Mon Jul 19 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Clay County in northwestern Minnesota...
  Western Norman County in northwestern Minnesota...
  Northwestern Wilkin County in west central Minnesota...
  Eastern Cass County in southeastern North Dakota...
  Southeastern Traill County in southeastern North Dakota...
  Northwestern Richland County in southeastern North Dakota...

* Until 330 PM CDT.

* At 226 PM CDT, severe thunderstorms were located along a line
  extending from near Halstad to near Gardner to Wheatland, moving
  southeast at 35 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Argusville and Casselton around 230 PM CDT.
  Georgetown and Brooktree Park around 235 PM CDT.
  Harwood and Chaffee around 240 PM CDT.
  North River, Kragnes and Fargo around 245 PM CDT.

Other locations in the path of these severe thunderstorms include
Oakport.

This includes the following highways...
 Interstate 29 between mile markers 40 and 91.
 Interstate 94 in North Dakota between mile markers 323 and 352.
 Interstate 94 in Minnesota between mile markers 1 and 21.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4702 9747 4719 9705 4748 9671 4687 9618
      4664 9652 4635 9716
TIME...MOT...LOC 1926Z 334DEG 31KT 4737 9672 4711 9688 4691 9734 

HAIL...0.75IN
WIND...60MPH
 
$$

JR

1 follow-up statement

930 
WWUS53 KFGF 191957
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
257 PM CDT Mon Jul 19 2021

MNC107-NDC097-192007-
/O.CAN.KFGF.SV.W.0052.000000T0000Z-210719T2030Z/
Norman MN-Traill ND-
257 PM CDT Mon Jul 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN NORMAN AND
SOUTHEASTERN TRAILL COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4680 9736 4715 9654 4715 9643 4687 9618
      4664 9652 4635 9716
TIME...MOT...LOC 1957Z 335DEG 36KT 4702 9671 4682 9669 4663 9715 

$$

MNC027-167-NDC017-077-192030-
/O.CON.KFGF.SV.W.0052.000000T0000Z-210719T2030Z/
Clay MN-Wilkin MN-Cass ND-Richland ND-
257 PM CDT Mon Jul 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR CLAY...NORTHWESTERN WILKIN...SOUTHEASTERN CASS AND NORTHWESTERN
RICHLAND COUNTIES...

At 257 PM CDT, severe thunderstorms were located along a line
extending from near Kragnes to near Sabin to near Barrie, moving
southeast at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
  Kindred, Wild Rice, Barrie, Sabin, Rustad, Walcott, Comstock, 
  Glyndon and Downer.

This includes the following highways...
 Interstate 29 between mile markers 40 and 74.
 Interstate 94 in North Dakota between mile markers 333 and 352.
 Interstate 94 in Minnesota between mile markers 1 and 21.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4680 9736 4715 9654 4715 9643 4687 9618
      4664 9652 4635 9716
TIME...MOT...LOC 1957Z 335DEG 36KT 4702 9671 4682 9669 4663 9715 

HAIL...0.75IN
WIND...60MPH
 
$$

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:15 AM CDT	Special Weather Statement	FGF	Lake of the Woods	60 min
Jul 19, 7:47 AM CDT	Special Weather Statement	FGF	Roseau	43 min
Jul 19, 8:19 AM CDT	Special Weather Statement	FGF	Roseau	56 min
Jul 19, 8:26 AM CDT	Special Weather Statement	FGF	Kittson	64 min
Jul 19, 1:32 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman, Polk	58 min
Jul 19, 3:13 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Otter Tail, Wilkin	62 min
Jul 19, 10:55 AM CDT	Special Weather Statement	FGF	Ramsey	65 min
Jul 19, 11:28 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Grand Forks, Nelson, Ramsey, Walsh	62 min
Jul 19, 12:11 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Griggs, Nelson, Ramsey, Steele, Walsh	64 min
Jul 19, 1:02 PM CDT	Special Weather Statement	FGF	Grand Forks, Steele, Traill	58 min
Jul 19, 6:44 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey, Towner	46 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Severe Thunderstorm Warnings in North Dakota, 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.