Alert archive / Texas / Tornado Warnings in 2008

Tornado Warning 29, NWS Austin/San Antonio, TX

July 24, 2008Bexar County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Jul 24, 2008, 1:29 PM CDT for Bexar County, Texas. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 24, 2008, 1:29 PM CDT (18:29 UTC)
Expired
Jul 24, 2008, 1:50 PM CDT
In force
21 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon

County Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 59 km from the middle of the area, began a volume at 18:28 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 24, 7:00 AM CDTTornado WatchSPC12 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 6.5 hours before the alert went out and 216 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 2008-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 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 2008-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939Sfc1 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
123 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
938 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KEWX 241830
TOREWX
TXC029-241915-
/O.NEW.KEWX.TO.W.0029.080724T1829Z-080724T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
129 PM CDT THU JUL 24 2008

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BEXAR COUNTY...

* UNTIL 215 PM CDT.

* AT 124 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE   
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO ON THE WEST SIDE OF 
  SAN ANTONIO...MOVING NORTHWEST AT 34 MPH.

* THE TORNADO WILL BE NEAR...
  SHAVANO PARK BY 140 PM CDT...
  LEON SPRINGS AND THE DOMINION BY 150 PM CDT...
  6 MILES SOUTHWEST OF FAIR OAKS RANCH BY 155 PM CDT...

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 600 PM CDT THURSDAY EVENING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2954 9867 2957 9862 2973 9870 2974 9864
      2945 9846 2942 9858
TIME...MOT...LOC 1829Z 147DEG 30KT 2949 9857

$$
1 follow-up statement
000 
WWUS54 KEWX 241850
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
149 PM CDT THU JUL 24 2008

TXC029-241859-
/O.CAN.KEWX.TO.W.0029.000000T0000Z-080724T1915Z/
BEXAR TX-
149 PM CDT THU JUL 24 2008

...THE TORNADO WARNING FOR CENTRAL BEXAR COUNTY IS CANCELLED...

A STORM LOCATED ROUGHLY 3 MILES NORTHEAST OF HELOTES CONTINUES TO 
SHOW A POTENTIAL FOR ROTATION BUT IS NOT EXPECTED TO PRODUCE A 
TORNADO AT THIS TIME. RESIDENTS OF NORTHWEST BEXAR COUNTY SHOULD 
CONTINUE TO MONITOR THE WEATHER CLOSELY AND BE PREPARED TO TAKE 
SHELTER IF A TORNADO WARNING IS ISSUED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CDT THURSDAY EVENING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2954 9867 2957 9862 2973 9870 2974 9864
      2945 9846 2942 9858
TIME...MOT...LOC 1849Z 147DEG 21KT 2958 9864

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 3:55 AM CDTFlash Flood WatchEWXDimmit, Kinney, Maverick, Val Verde, Zavala27 hr
Jul 24, 7:41 AM CDTAreal Flood AdvisoryEWXAtascosa2 hr
Jul 24, 9:52 AM CDTTornado WarningEWXGonzales, Guadalupe, Karnes, Wilson20 min
Jul 24, 10:14 AM CDTTornado WarningEWXDeWitt, Gonzales, Guadalupe, Karnes, Wilson46 min
Jul 24, 11:23 AM CDTTornado WarningEWXLavaca37 min
Jul 24, 11:31 AM CDTTornado WarningEWXGonzales, Guadalupe44 min
Jul 24, 12:28 PM CDTAreal Flood AdvisoryEWXAtascosa, Bandera, Bexar, Blanco, Comal, Gillespie and 6 more3 hr
Jul 24, 12:41 PM CDTWind AdvisoryEWXDimmit, Frio, Maverick, Zavala5 hr
Jul 24, 12:43 PM CDTFlash Flood WarningEWXBexar, Comal3 hr
Jul 24, 12:46 PM CDTTornado WarningEWXBexar, Medina29 min
Jul 24, 1:04 PM CDTFlash Flood WarningEWXAtascosa3 hr
Jul 24, 1:09 PM CDTTornado WarningEWXBandera, Bexar, Kendall, Kerr, Medina36 min
Jul 24, 2:26 PM CDTAreal Flood AdvisoryEWXBastrop, Burnet, Fayette, Lee, Llano, Travis and 1 more4 hr
Jul 24, 3:27 PM CDTAreal Flood AdvisoryEWXBandera, Blanco, Gillespie, Hays, Kendall, Kerr and 2 more3 hr
Jul 24, 3:39 PM CDTFlash Flood WarningEWXBexar, Comal3 hr
Jul 24, 4:03 PM CDTAreal Flood AdvisoryEWXCaldwell, DeWitt, Gonzales, Guadalupe, Karnes, Lavaca and 1 more117 min
Jul 24, 5:38 PM CDTTornado WarningEWXBexar, Guadalupe, Wilson37 min
Jul 24, 6:01 PM CDTAreal Flood AdvisoryEWXCaldwell, Gonzales, Guadalupe119 min
Jul 24, 6:41 PM CDTAreal Flood AdvisoryEWXBlanco, Burnet, Gillespie, Hays, Kendall, Kerr and 1 more2 hr
Jul 24, 6:49 PM CDTAreal Flood AdvisoryEWXComal116 min

Nearby

Tornado Warnings in Texas, 2008Every tornado warning in 2008Tornadoes in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.