Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 147, NWS Austin/San Antonio, TX

August 8, 2003Blanco County, Comal County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Aug 8, 2003, 9:43 PM CDT for Blanco County, Comal County, Texas. It was in force for 47 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
Aug 8, 2003, 9:43 PM CDT (02:43 UTC)
Expired
Aug 8, 2003, 10:30 PM CDT
In force
47 min
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Blanco County, TX, Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 52 km from the middle of the area, began a volume at 02:42 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

Del Rio, TX (KDRT), launched 00:00Z, 2.7 hours before the alert went out and 251 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 00:00Z on 2003-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1672 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, Del Rio, TX at 00:00Z on 2003-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1672 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
2764 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 090243
SVRSAT
TXC031-091-090330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
942 PM CDT FRI AUG 8 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  BLANCO
  COMAL

* UNTIL 1030 PM CDT

* AT 942 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTH OF FISCHER...OR ABOUT 8 MILES    
  EAST OF BLANCO...MOVING SOUTH AT 20 MPH.  DAMAGING WINDS TO 
  NEAR 60 MPH ARE POSSIBLE WITH THIS STORM ALONG WITH HAIL AND
  FREQUENT LIGHTNING.     


LAT...LON 3018 9855 2997 9839 2982 9850 2969 9822
          2982 9808 3006 9833 3044 9818 3048 9850

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 2:59 PM CDTSevere Thunderstorm WarningEWXBandera, Kerr, Real61 min
Aug 9, 3:17 PM CDTSevere Thunderstorm WarningEWXKerr43 min
Aug 9, 3:23 PM CDTSevere Thunderstorm WarningEWXHays67 min
Aug 9, 3:49 PM CDTSevere Thunderstorm WarningEWXComal, Guadalupe56 min
Aug 9, 4:10 PM CDTFlash Flood WarningEWXKerr, Real3 hr
Aug 9, 5:10 PM CDTSevere Thunderstorm WarningEWXBandera35 min
Aug 9, 5:46 PM CDTSevere Thunderstorm WarningEWXBandera59 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning 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.