Alert archive / Texas / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 148, NWS Austin/San Antonio, TX

October 17, 1996Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 17, 1996, 6:12 PM CDT for Williamson County, Texas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 17, 1996, 6:12 PM CDT (23:12 UTC)
Expired
Oct 17, 1996, 6:45 PM CDT
In force
33 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 245 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, Fort Worth, TX at 12:00Z on 1996-10-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1304 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, Fort Worth, TX at 12:00Z on 1996-10-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 247 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
1304 J/kg
Mixed-layer CIN
-202 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
247 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 172314
SVRSAT
TXC491-172345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
612 PM CDT THU OCT 17 1996
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...EASTERN WILLIAMSON COUNTY
 
AT 610 PM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR GRANGER AND
TAYLOR. MOVEMENT WAS EAST AT 25 MPH. THIS STORM WILL EXIT WILLIAMSON
COUNTY IN THE NEXT 30 MINUTES.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS.  FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL
STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.
 
IF YOU SEE SEVERE WEATHER TAKING PLACE...CALL YOUR REPORT TO
THE NEAREST LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE
NATIONAL WEATHER SERVICE.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 17, 5:13 PM CDTSevere Thunderstorm WarningEWXWilliamson62 min
Oct 17, 5:40 PM CDTSevere Thunderstorm WarningEWXTravis65 min

Nearby

Severe Thunderstorm Warnings in Texas, 1996Every severe thunderstorm warning in 1996

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.