Alert archive / Texas / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 3, NWS Austin/San Antonio, TX

February 11, 1992Burnet County, Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 11, 1992, 5:49 PM CST for Burnet County, Travis County, Williamson County, Texas. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Feb 11, 1992, 5:49 PM CST (23:49 UTC)
Expired
Feb 11, 1992, 6:15 PM CST
In force
26 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Burnet County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 11.8 hours before the alert went out and 183 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, Stephenville/Cla, TX at 12:00Z on 1992-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 309 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, Stephenville/Cla, TX at 12:00Z on 1992-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.1939587897Sfc1 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
309 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
144 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 KAUS 112350
SVRAUS
TXC053-453-491-120045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
549 PM CST TUE FEB 11 1992
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...EASTERN BURNET COUNTY...NORTHWESTERN TRAVIS COUNTY
   ...WESTERN WILLIAMSON COUNTY
 
JUST BEFORE 6PM...RADAR SHOWED THAT THE SEVERE THUNDERSTORM...NOW OVER
THE BURNET/WILLIAMSON COUNTY LINE TO BE MOVING TO THE SOUTH VERY
SLOWLY. IT SHOULD REACH TO NEAR LIBERTY HILL AND TO JUST NORTH OF
LAKE TRAVIS BY 630 PM.
 
LARGE HAIL HAS BEEN CONFINED TO ABOUT A 10 MILE DIAMETER AREA LOCATED
JUST TO THE NORTHEAST AND EAST OF BERTRAM.
 
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOV\E TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 11:30 AM CSTFlash Flood WarningEWXJackson, Lavaca60 min
Feb 11, 1:27 PM CSTFlash Flood WarningEWXJackson, Lavaca63 min
Feb 11, 2:18 PM CSTFlash Flood WarningEWXLavaca57 min
Feb 11, 3:20 PM CSTFlash Flood WarningEWXLavaca55 min
Feb 11, 4:16 PM CSTFlash Flood WarningEWXDeWitt, Lavaca59 min
Feb 11, 4:52 PM CSTSevere Thunderstorm WarningEWXBurleson68 min
Feb 11, 4:52 PM CSTSevere Thunderstorm WarningEWXWilliamson68 min
Feb 11, 5:30 PM CSTFlash Flood WarningEWXJackson, Lavaca60 min
Feb 11, 5:30 PM CSTFlash Flood WarningEWXDeWitt60 min

Nearby

Severe Thunderstorm Warnings in Texas, 1992Every severe thunderstorm warning in 1992

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.