Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 68, NWS Fort Worth, TX

April 9, 2021Anderson County, Henderson County, Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 9, 2021, 8:36 PM CDT for Anderson County, Henderson County, Van Zandt County, Texas. It was in force for 54 min. 2 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, 8:36 PM CDT (01:36 UTC)
Expired
Apr 9, 2021, 9:30 PM CDT
In force
54 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Anderson County, TX, Henderson County, TX, Van Zandt County, TX

The radar

The Shreveport radar (KSHV), 166 km from the middle of the area, began a volume at 01:37 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, 8:58 PM CDTHAIL 0.8814 S Malakoff, TX
Apr 9, 9:12 PM CDTHAIL 115 Wsw Poynor, 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.

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

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.6 hours before the alert went out and 175 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, Shreveport, LA at 00:00Z on 2021-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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, Shreveport, LA at 00:00Z on 2021-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 329 square meters per square second.19395878Sfc1 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
148 J/kg
Mixed-layer CIN
-321 J/kg
Mixed-layer LCL
2441 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
329 m²/s²
0-3 km storm-relative helicity
421 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

738 
WUUS54 KFWD 100136
SVRFWD
TXC001-213-467-100230-
/O.NEW.KFWD.SV.W.0068.210410T0136Z-210410T0230Z/

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

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Southeastern Van Zandt County in north central Texas...
  Henderson County in central Texas...
  Northern Anderson County in central Texas...

* Until 930 PM CDT.

* At 836 PM CDT, a severe thunderstorm was located near Athens,
  moving east at 45 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...
  Athens, Chandler, Malakoff, Frankston, Brownsboro, Berryville,
  Edom, Coffee City, Murchison, Poynor and Moore Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3192 9543 3197 9605 3198 9606 3216 9603
      3236 9587 3248 9559 3241 9550 3237 9547
      3237 9545 3229 9545 3223 9549 3220 9546
      3215 9548 3211 9545 3204 9543 3203 9544
      3201 9543 3199 9545 3196 9545 3193 9542
TIME...MOT...LOC 0136Z 258DEG 37KT 3213 9584 

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

12
2 follow-up statements
515 
WWUS54 KFWD 100200
SVSFWD

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

TXC467-100210-
/O.CAN.KFWD.SV.W.0068.000000T0000Z-210410T0230Z/
Van Zandt TX-
900 PM CDT Fri Apr 9 2021

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

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

LAT...LON 3192 9543 3197 9605 3198 9606 3213 9599
      3226 9577 3232 9560 3229 9545 3223 9549
      3220 9546 3215 9548 3211 9545 3204 9543
      3203 9544 3201 9543 3199 9545 3196 9545
      3193 9542
TIME...MOT...LOC 0200Z 301DEG 21KT 3201 9590 

$$

TXC001-213-100230-
/O.CON.KFWD.SV.W.0068.000000T0000Z-210410T0230Z/
Henderson TX-Anderson TX-
900 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR EASTERN HENDERSON AND NORTHERN ANDERSON COUNTIES...

At 900 PM CDT, a severe thunderstorm was located 10 miles southeast 
of Malakoff, or 15 miles south of Athens, moving southeast at 25 mph.

HAZARD...65 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.

Locations impacted include...
Athens, Chandler, Frankston, Brownsboro, Berryville, Coffee City,
Poynor and Moore Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3192 9543 3197 9605 3198 9606 3213 9599
      3226 9577 3232 9560 3229 9545 3223 9549
      3220 9546 3215 9548 3211 9545 3204 9543
      3203 9544 3201 9543 3199 9545 3196 9545
      3193 9542
TIME...MOT...LOC 0200Z 301DEG 21KT 3201 9590 

HAIL...1.25IN
WIND...65MPH
 
$$

Dunn
200 
WWUS54 KFWD 100218
SVSFWD

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

TXC213-100228-
/O.CAN.KFWD.SV.W.0068.000000T0000Z-210410T0230Z/
Henderson TX-
918 PM CDT Fri Apr 9 2021

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

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

LAT...LON 3192 9543 3197 9605 3198 9606 3201 9605
      3208 9544 3201 9543 3199 9545 3196 9545
      3193 9542
TIME...MOT...LOC 0218Z 315DEG 16KT 3193 9588 

$$

TXC001-100230-
/O.CON.KFWD.SV.W.0068.000000T0000Z-210410T0230Z/
Anderson TX-
918 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHERN ANDERSON COUNTY...

At 918 PM CDT, a severe thunderstorm was located 15 miles northeast 
of Fairfield Lake State Park, or 20 miles northwest of Palestine, 
moving southeast at 20 mph.

HAZARD...Golf ball size hail and 65 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...
Frankston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3192 9543 3197 9605 3198 9606 3201 9605
      3208 9544 3201 9543 3199 9545 3196 9545
      3193 9542
TIME...MOT...LOC 0218Z 315DEG 16KT 3193 9588 

HAIL...1.75IN
WIND...65MPH
 
$$

Dunn

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, 7:41 PM CDTSevere Thunderstorm WarningFWDDallas, Hunt, Kaufman, Rockwall49 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, 8:55 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.