Alert archive / Texas / Tornado Warnings in 2009

Tornado Warning 13, NWS Austin/San Antonio, TX

April 29, 2009Val Verde County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 29, 2009, 6:25 PM CDT for Val Verde County, Texas. It was in force for 65 min. 3 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 29, 2009, 6:25 PM CDT (23:25 UTC)
Expired
Apr 29, 2009, 7:30 PM CDT
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 161 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 29, 6:26 PM CDTHAIL 11 N Pandale, TXQUARTER SIZE HAIL NORTH OF PANDALE.
Apr 29, 6:35 PM CDTHAIL 21 N Pandale, TXHEN EGG SIZE HAIL WAS REPORTED NORTH OF PANDALE.
Apr 29, 6:48 PM CDTHAIL 2.757 S Pandale, TXOBSERVER REPORTED GOLFBALL TO BASEBALL SIZE HAIL SOUTH OF PANDALE.

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 29, 2:33 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.4 hours before the alert went out and 115 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, Del Rio, TX at 12:00Z on 2009-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2599 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2009-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
2599 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
2.8
Supercell composite
13.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KEWX 292325
TOREWX
TXC465-300030-
/O.NEW.KEWX.TO.W.0013.090429T2325Z-090430T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
625 PM CDT WED APR 29 2009

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR...
  VAL VERDE COUNTY...

* UNTIL 730 PM CDT.

* AT 622 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PANDALE...OR ABOUT
  27 MILES NORTH OF LANGTRY...MOVING SOUTHEAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL UP TO THE SIZE OF 
SOFTBALLS AND LARGE HAIL IS LIKELY IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR SOUTH CENTRAL TEXAS.

&&

LAT...LON 3029 10175 3030 10142 3025 10111 2980 10146
      3009 10176 3028 10177
TIME...MOT...LOC 2323Z 301DEG 21KT 3020 10164

$$
2 follow-up statements
000 
WWUS54 KEWX 292357
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
657 PM CDT WED APR 29 2009

TXC465-300030-
/O.CON.KEWX.TO.W.0013.000000T0000Z-090430T0030Z/
VAL VERDE TX-
657 PM CDT WED APR 29 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR VAL VERDE
COUNTY...

AT 652 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO. 
THIS TORNADO WAS LOCATED 7 MILES SOUTHEAST OF PANDALE...OR 21 MILES
NORTH OF LANGTRY...MOVING SOUTHEAST AT 25 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

TWO INCH HAIL WAS REPORTED IN PANDALE AS THIS STORM PASSED AND LARGE 
HAIL...UP TO BASEBALL SIZE...WILL CONTINUE TO FALL IN THE WARNED 
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR SOUTH CENTRAL TEXAS.

&&

LAT...LON 3010 10170 3021 10161 3029 10154 3030 10142
      3025 10111 2980 10146
TIME...MOT...LOC 2355Z 301DEG 21KT 3010 10145

$$
000 
WWUS54 KEWX 300012
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
712 PM CDT WED APR 29 2009

TXC465-300030-
/O.CON.KEWX.TO.W.0013.000000T0000Z-090430T0030Z/
VAL VERDE TX-
712 PM CDT WED APR 29 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR VAL VERDE
COUNTY...

AT 712 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO. 
THIS TORNADO WAS LOCATED OVER VAL VERDE COUNTY...OR 16 MILES WEST OF
JUNO...MOVING SOUTHEAST AT 20 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

THIS STORM WILL CONTINUE TO PRODUCE LARGE HAIL IN ADDITION TO THE 
THREAT OF A TORNADO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR SOUTH CENTRAL TEXAS.

&&

LAT...LON 2992 10137 3001 10153 3011 10147 3021 10144
      3030 10142 3025 10111
TIME...MOT...LOC 0012Z 298DEG 19KT 3007 10137

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 5:47 PM CDTTornado WarningEWXVal Verde43 min

Nearby

Tornado Warnings in Texas, 2009Every tornado warning in 2009Tornadoes in 2009

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.