Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS Fort Worth, TX

April 9, 2021Ellis County, Hill County, Johnson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 9, 2021, 6:23 PM CDT for Ellis County, Hill County, Johnson County, Texas. It was in force for 67 min. 11 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, 6:23 PM CDT (23:23 UTC)
Expired
Apr 9, 2021, 7:30 PM CDT
In force
67 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

Counties Ellis County, TX, Hill County, TX, Johnson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 59 km from the middle of the area, began a volume at 23:25 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, 6:25 PM CDTHAIL 11 Wnw Grandview, TXSOCIAL MEDIA IMAGE OF MEASURED 1 INCH HAIL. TIME ESTIMATED VIA RADAR.
Apr 9, 6:25 PM CDTHAIL 21 Ene Grandview, TXSOCIAL MEDIA IMAGE OF MEASURED 2 INCH HAIL. TIME ESTIMATED VIA RADAR.
Apr 9, 6:26 PM CDTHAIL 1.75Grandview, TXSOCIAL MEDIA VIDEO OF GOLF BALL SIZE HAIL.
Apr 9, 6:45 PM CDTHAIL 0.754 Ssw Maypearl, TXREPORT FROM MPING: DIME (0.75 IN.).
Apr 9, 6:50 PM CDTHAIL 16 Nnw Milford, TXREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 9, 6:52 PM CDTHAIL 26 Sw Maypearl, TX
Apr 9, 7:12 PM CDTHAIL 1.754 W Italy, TX
Apr 9, 7:30 PM CDTHAIL 0.751 Wsw Maypearl, TXREPORT FROM MPING: DIME (0.75 IN.).
Apr 9, 7:34 PM CDTHAIL 1.751 Nnw Maypearl, TX
Apr 9, 7:34 PM CDTHAIL 1.75Maypearl, TXTIME ESTIMATED VIA RADAR.
Apr 9, 7:36 PM CDTHAIL 1.52 Sw Maypearl, TXREPORT FROM MPING: PING PONG BALL (1.50 IN.).

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 12:00Z, 11.4 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 12:00Z on 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1461 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 12:00Z on 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 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
1461 J/kg
Mixed-layer CIN
-451 J/kg
Mixed-layer LCL
890 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
399 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

403 
WUUS54 KFWD 092323
SVRFWD
TXC139-217-251-100030-
/O.NEW.KFWD.SV.W.0059.210409T2323Z-210410T0030Z/

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

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  East central Johnson County in north central Texas...
  Northeastern Hill County in central Texas...
  Southwestern Ellis County in north central Texas...

* Until 730 PM CDT.

* At 623 PM CDT, a severe thunderstorm was located over Grandview, or
  9 miles south of Alvarado, moving east at 15 mph.

  HAZARD...Golf 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...
  Waxahachie, Italy, Grandview, Maypearl, Milford and Mertens. 

This includes the following highways...
 Interstate 35W between mile markers 8 and 22.
 Interstate 35E between mile markers 376 and 397.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3214 9676 3207 9690 3201 9685 3200 9686
      3223 9725 3236 9720 3237 9676 3216 9674
TIME...MOT...LOC 2323Z 284DEG 13KT 3228 9717 

HAIL...1.75IN
WIND...60MPH
$$

12
1 follow-up statement
424 
WWUS54 KFWD 100007
SVSFWD

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

TXC139-217-251-100030-
/O.CON.KFWD.SV.W.0059.000000T0000Z-210410T0030Z/
Johnson TX-Hill TX-Ellis TX-
707 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EAST CENTRAL JOHNSON...NORTHEASTERN HILL AND SOUTHWESTERN ELLIS
COUNTIES...

At 706 PM CDT, a severe thunderstorm was located near Maypearl, or 11
miles southwest of Waxahachie, moving east at 20 mph.

HAZARD...Golf 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...
Waxahachie, Italy, Grandview, Maypearl, Milford and Mertens. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3206 9689 3204 9692 3223 9725 3236 9720
      3235 9676 3216 9674 3214 9676 3207 9690
TIME...MOT...LOC 0006Z 277DEG 15KT 3226 9695 

HAIL...1.75IN
WIND...60MPH
 
$$

12

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 7:11 PM CDTSevere Thunderstorm WarningFWDBell, Falls, McLennan64 min
Apr 8, 7:14 PM CDTSpecial Weather StatementFWDNavarro31 min
Apr 8, 7:57 PM CDTSevere Thunderstorm WarningFWDBell, Falls, Milam, Robertson78 min
Apr 8, 9:18 PM CDTSpecial Weather StatementFWDLimestone27 min
Apr 8, 9:44 PM CDTSpecial Weather StatementFWDHenderson31 min
Apr 8, 9:48 PM CDTSpecial Weather StatementFWDLeon27 min
Apr 8, 9:52 PM CDTSevere Thunderstorm WarningFWDAnderson, Henderson41 min
Apr 8, 11:07 PM CDTSpecial Weather StatementFWDAnderson23 min
Apr 8, 11:21 PM CDTSpecial Weather StatementFWDVan Zandt54 min
Apr 8, 11:23 PM CDTSevere Thunderstorm WarningFWDKaufman, Van Zandt34 min
Apr 9, 10:51 AM CDTSpecial Weather StatementFWDDelta24 min
Apr 9, 11:13 AM CDTSpecial Weather StatementFWDLamar32 min
Apr 9, 1:05 PM CDTSpecial Weather StatementFWDHenderson40 min
Apr 9, 1:14 PM CDTSevere Thunderstorm WarningFWDHenderson, Van Zandt29 min
Apr 9, 6:40 PM CDTSevere Thunderstorm WarningFWDEllis, Johnson65 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.