Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 63, NWS Fort Worth, TX

April 9, 20214 counties in Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 9, 2021, 7:41 PM CDT for 4 counties in Texas. It was in force for 49 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
Apr 9, 2021, 7:41 PM CDT (00:41 UTC)
Expired
Apr 9, 2021, 8:30 PM CDT
In force
49 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

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

The radar

The Dallas/Ft Worth radar (KFWS), 83 km from the middle of the area, began a volume at 00:43 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

TimeReportWhereRemark
Apr 9, 7:55 PM CDTHAIL 1Forney, TXREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 9, 7:56 PM CDTHAIL 1Forney, TX
Apr 9, 7:57 PM CDTHAIL 1.251 S Forney, TXREPORT FROM MPING: HALF DOLLAR (1.25 IN.).
Apr 9, 8:15 PM CDTHAIL 12 Sw Rowlett, TXREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 9, 8:17 PM CDTHAIL 11 Sw Rowlett, TXREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 9, 8:24 PM CDTHAIL 11 Wsw Rowlett, TXSOCIAL MEDIA IMAGE OF MEASURED 1 INCH HAIL. TIME ESTIMATED VIA RADAR.

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.

IssuedProductOfficeLasted
Apr 9, 4:27 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.7 hours before the alert went out and 83 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2021-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3129 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2021-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

587 
WUUS54 KFWD 100041
SVRFWD
TXC113-231-257-397-100130-
/O.NEW.KFWD.SV.W.0063.210410T0041Z-210410T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
741 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...
  Southwestern Hunt County in north central Texas...
  Northern Kaufman County in north central Texas...
  Southeastern Dallas County in north central Texas...

* Until 830 PM CDT.

* At 740 PM CDT, a severe thunderstorm was located over Seagoville,
  moving northeast at 40 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

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

This includes the following highways...
 Interstate 20 between mile markers 473 and 508.
 Interstate 30 between mile markers 58 and 78.
 Interstate 45 between mile markers 267 and 275.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3269 9608 3251 9651 3252 9651 3255 9653
      3255 9675 3257 9679 3298 9652 3298 9606
TIME...MOT...LOC 0040Z 245DEG 33KT 3265 9658 

HAIL...1.50IN
WIND...60MPH
$$

12
1 follow-up statement
862 
WWUS54 KFWD 100103
SVSFWD

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

TXC113-231-257-397-100130-
/O.CON.KFWD.SV.W.0063.000000T0000Z-210410T0130Z/
Rockwall TX-Hunt TX-Kaufman TX-Dallas TX-
803 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR ROCKWALL...SOUTHWESTERN HUNT...NORTHERN KAUFMAN AND SOUTHEASTERN
DALLAS COUNTIES...

At 803 PM CDT, a severe thunderstorm was located near Forney, moving
northeast at 35 mph.

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

SOURCE...Emergency management.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3260 9629 3262 9676 3298 9652 3298 9606
      3269 9608
TIME...MOT...LOC 0103Z 235DEG 29KT 3276 9641 

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

12

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:01 PM CDTSevere Thunderstorm WarningFWDDallas44 min
Apr 9, 7:27 PM CDTSevere Thunderstorm WarningFWDEllis, Hill, Navarro63 min
Apr 9, 7:53 PM CDTSevere Thunderstorm WarningFWDCooke, Grayson82 min
Apr 9, 7:59 PM CDTSevere Thunderstorm WarningFWDDallas49 min
Apr 9, 8:08 PM CDTSevere Thunderstorm WarningFWDNavarro82 min
Apr 9, 8:31 PM CDTSevere Thunderstorm WarningFWDDallas, Kaufman, Rockwall30 min
Apr 9, 8:36 PM CDTSevere Thunderstorm WarningFWDAnderson, Henderson, Van Zandt54 min
Apr 9, 8:55 PM CDTSevere Thunderstorm WarningFWDCooke, Grayson65 min
Apr 9, 9:04 PM CDTSevere Thunderstorm WarningFWDAnderson71 min
Apr 9, 9:42 PM CDTSevere Thunderstorm WarningFWDFannin, Lamar78 min
Apr 9, 10:00 PM CDTSevere Thunderstorm WarningFWDAnderson, Freestone, Leon75 min
Apr 9, 10:33 PM CDTSpecial Weather StatementFWDDelta, Hopkins, Hunt42 min
Apr 9, 10:43 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins, Hunt46 min
Apr 9, 11:24 PM CDTSevere Thunderstorm WarningFWDRains, Van Zandt47 min
Apr 9, 11:40 PM CDTSevere Thunderstorm WarningFWDHenderson, Kaufman, Van Zandt63 min
Apr 10, 12:22 AM CDTSpecial Weather StatementFWDAnderson53 min
Apr 10, 1:15 AM CDTSpecial Weather StatementFWDLeon45 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every 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.