Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 64, NWS Austin/San Antonio, TX

April 28, 2021Kinney County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 28, 2021, 6:47 PM CDT for Kinney County, Val Verde County, Texas. It was in force for 58 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 28, 2021, 6:47 PM CDT (23:47 UTC)
Expired: Apr 28, 2021, 7:45 PM CDT
In force: 58 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Kinney County, TX, Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 50 km from the middle of the area, began a volume at 23:50 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 28, 7:05 PM CDT	HAIL 0.7	Laughlin Afb, TX	LAUGHLIN AFB OBSERVER REPORTS ONE-HALF INCH AND DIME SIZED HAIL.

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 28, 3:10 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.8 hours before the alert went out and 6 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: 2118 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

198 
WUUS54 KEWX 282347
SVREWX
TXC271-465-290045-
/O.NEW.KEWX.SV.W.0064.210428T2347Z-210429T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
647 PM CDT Wed Apr 28 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Western Kinney County in south central Texas...
  Southeastern Val Verde County in south central Texas...

* Until 745 PM CDT.

* At 646 PM CDT, a severe thunderstorm was located 11 miles south of
  Del Rio, 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...
  Del Rio, Brackettville, Lake View, Amanda, Laughlin AFB, Val Verde
  Park, Standart, Cienegas Terrace, 277 South Boat Ramp, Escondido
  Estates, Fort Clark Springs, Lake Ridge Ranch and San Pedro Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.

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

&&

A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.

LAT...LON 2963 10067 2963 10061 2933 10032 2913 10073
      2915 10074 2917 10077 2920 10077 2926 10081
      2928 10087 2931 10089 2933 10094 2935 10095
      2936 10100 2942 10104
TIME...MOT...LOC 2346Z 234DEG 35KT 2921 10090 

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

YB

2 follow-up statements

450 
WWUS54 KEWX 290004
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
704 PM CDT Wed Apr 28 2021

TXC271-465-290045-
/O.CON.KEWX.SV.W.0064.000000T0000Z-210429T0045Z/
Kinney TX-Val Verde TX-
704 PM CDT Wed Apr 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR WESTERN KINNEY AND SOUTHEASTERN VAL VERDE COUNTIES...

At 704 PM CDT, a severe thunderstorm was located near Laughlin AFB,
or 9 miles southeast of Del Rio, moving northeast at 40 mph.

HAZARD...60 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...
Del Rio, Brackettville, Val Verde Park, Standart, Cienegas Terrace,
Amanda, Laughlin AFB, Escondido Estates and Fort Clark Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.

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

&&

LAT...LON 2963 10067 2963 10061 2933 10032 2913 10073
      2915 10074 2917 10077 2920 10077 2926 10081
      2928 10087 2931 10089 2932 10092 2934 10094
      2935 10094 2935 10097
TIME...MOT...LOC 0004Z 234DEG 35KT 2931 10074 

HAIL...1.25IN
WIND...60MPH
 
$$

YB

177 
WWUS54 KEWX 290019
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
719 PM CDT Wed Apr 28 2021

TXC271-465-290045-
/O.CON.KEWX.SV.W.0064.000000T0000Z-210429T0045Z/
Kinney TX-Val Verde TX-
719 PM CDT Wed Apr 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR WESTERN KINNEY AND SOUTHEASTERN VAL VERDE COUNTIES...

At 719 PM CDT, a severe thunderstorm was located near Brackettville,
moving east at 70 mph.

HAZARD...60 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...
Del Rio, Brackettville, Val Verde Park, Standart, Amanda, Laughlin
AFB, Escondido Estates and Fort Clark Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.

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

&&

LAT...LON 2963 10067 2963 10061 2933 10032 2918 10069
      2922 10074 2932 10085 2938 10092
TIME...MOT...LOC 0019Z 272DEG 63KT 2928 10047 

HAIL...1.25IN
WIND...60MPH
 
$$

YB

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 3:34 PM CDT	Special Weather Statement	EWX	Val Verde	41 min
Apr 28, 3:42 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	34 min
Apr 28, 4:29 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	61 min
Apr 28, 5:25 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	65 min
Apr 28, 5:27 PM CDT	Special Weather Statement	EWX	Kinney	48 min
Apr 28, 5:38 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	37 min
Apr 28, 6:09 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kinney, Medina, Real, Uvalde	66 min
Apr 28, 6:18 PM CDT	Special Weather Statement	EWX	Val Verde	42 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.