Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Fort Worth, TX

April 9, 2021Dallas County, Kaufman County, Rockwall County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 9, 2021, 8:31 PM CDT for Dallas County, Kaufman County, Rockwall County, Texas. It was in force for 30 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: Apr 9, 2021, 8:31 PM CDT (01:31 UTC)
Expired: Apr 9, 2021, 9:01 PM CDT
In force: 30 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dallas County, TX, Kaufman County, TX, Rockwall County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 81 km from the middle of the area, began a volume at 01:34 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
Apr 9, 8:44 PM CDT	HAIL 0.88	Heath, TX

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 9, 4:27 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 hours before the alert went out and 79 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: 3129 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1600 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 11.7

Open this sounding in Storm Lab

The text

As transmitted.

483 
WUUS54 KFWD 100131
SVRFWD
TXC113-257-397-100230-
/O.NEW.KFWD.SV.W.0067.210410T0131Z-210410T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
831 PM CDT Fri Apr 9 2021

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Rockwall County in north central Texas...
  Northwestern Kaufman County in north central Texas...
  Eastern Dallas County in north central Texas...

* Until 930 PM CDT.

* At 831 PM CDT, a severe thunderstorm was located over Hutchins,
  moving east at 15 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Dallas, Garland, Mesquite, Rowlett, Rockwall, Lancaster, Balch
  Springs, Terrell, Seagoville, Forney, Hutchins, Royse City, Heath,
  Fate, Sunnyvale, Wilmer, Crandall, Combine, Talty and Mobile City.

This includes the following highways...
 Interstate 35E near mile marker 417.
 Interstate 20 between mile markers 467 and 498.
 Interstate 30 between mile markers 52 and 78.
 Interstate 45 between mile markers 270 and 280.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection get inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3264 9630 3252 9641 3263 9683 3294 9661
      3298 9630
TIME...MOT...LOC 0131Z 291DEG 12KT 3267 9672 

HAIL...1.00IN
WIND...60MPH
$$

12

2 follow-up statements

466 
WWUS54 KFWD 100148 RRA
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
848 PM CDT Fri Apr 9 2021

TXC113-257-397-100230-
/O.CON.KFWD.SV.W.0067.000000T0000Z-210410T0230Z/
Rockwall TX-Kaufman TX-Dallas TX-
848 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR SOUTHERN ROCKWALL...NORTHWESTERN KAUFMAN AND SOUTHEASTERN DALLAS
COUNTIES...

At 848 PM CDT, a severe thunderstorm was located over Seagoville,
moving east at 20 mph.

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

SOURCE...Public.

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

Locations impacted include...
Dallas, Mesquite, Rockwall, Balch Springs, Terrell, Seagoville,
Forney, Hutchins, Heath, Sunnyvale, Wilmer, Crandall, Combine, Talty,
McLendon-Chisholm, Post Oak Bend City and Lawrence.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection stay inside a sturdy structure and keep away from
windows.

&&

LAT...LON 3264 9630 3252 9641 3260 9673 3290 9650
      3291 9630
TIME...MOT...LOC 0148Z 285DEG 16KT 3265 9659 

HAIL...1.00IN
WIND...60MPH
 
$$

12

198 
WWUS54 KFWD 100201
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
901 PM CDT Fri Apr 9 2021

TXC113-257-397-100211-
/O.CAN.KFWD.SV.W.0067.000000T0000Z-210410T0230Z/
Rockwall TX-Kaufman TX-Dallas TX-
901 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ROCKWALL...
NORTHWESTERN KAUFMAN AND SOUTHEASTERN DALLAS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits. Therefore the warning has been cancelled. However small hail
and gusty winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
north central Texas.

LAT...LON 3264 9630 3252 9641 3260 9673 3290 9650
      3291 9630
TIME...MOT...LOC 0200Z 291DEG 12KT 3263 9654 

$$

Dunn

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 7:01 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	44 min
Apr 9, 7:27 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Navarro	63 min
Apr 9, 7:41 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Hunt, Kaufman, Rockwall	49 min
Apr 9, 7:53 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	82 min
Apr 9, 7:59 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	49 min
Apr 9, 8:08 PM CDT	Severe Thunderstorm Warning	FWD	Navarro	82 min
Apr 9, 8:36 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Henderson, Van Zandt	54 min
Apr 9, 8:55 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	65 min
Apr 9, 9:04 PM CDT	Severe Thunderstorm Warning	FWD	Anderson	71 min
Apr 9, 9:42 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	78 min
Apr 9, 10:00 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Leon	75 min
Apr 9, 10:33 PM CDT	Special Weather Statement	FWD	Delta, Hopkins, Hunt	42 min
Apr 9, 10:43 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt	46 min
Apr 9, 11:24 PM CDT	Severe Thunderstorm Warning	FWD	Rains, Van Zandt	47 min
Apr 9, 11:40 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	63 min
Apr 10, 12:22 AM CDT	Special Weather Statement	FWD	Anderson	53 min
Apr 10, 1:15 AM CDT	Special Weather Statement	FWD	Leon	45 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.