Alert archive / Texas / Tornado Warnings in 2003

Tornado Warning 14, NWS Austin/San Antonio, TX

September 11, 2003Comal County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Sep 11, 2003, 9:47 PM CDT for Comal County, Texas. It was in force for 28 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
Sep 11, 2003, 9:47 PM CDT (02:47 UTC)
Expired
Sep 11, 2003, 10:15 PM CDT
In force
28 min
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 12 km from the middle of the area, began a volume at 02:50 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.8 hours before the alert went out and 240 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, Corpus Christi, TX at 00:00Z on 2003-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3552 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, Corpus Christi, TX at 00:00Z on 2003-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
3552 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
1.5
Supercell composite
8.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KEWX 120247
TORSAT
TXC091-120315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
948 PM CDT THU SEP 11 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  COMAL

* UNTIL 1015 PM CDT

* AT 948 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG SIGNS THAT A TORNADO IS DEVELOPING 5 MILES
  NORTHEAST OF NEW BRAUNFELS...MOVING EAST AT 5 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  RURAL COMAL COUNTY AT 1000 PM


LAT...LON 2989 9812 2968 9816 2967 9816 2976 9801

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 8:05 PM CDTSevere Thunderstorm WarningEWXKerr55 min
Sep 11, 9:09 PM CDTSevere Thunderstorm WarningEWXComal, Hays66 min
Sep 11, 10:34 PM CDTFlash Flood WarningEWXComal116 min
Sep 11, 10:34 PM CDTSevere Thunderstorm WarningEWXVal Verde56 min

Nearby

Tornado Warnings in Texas, 2003Every tornado warning in 2003Tornadoes in 2003

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.