Alert archive / Texas / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 21, NWS Austin/San Antonio, TX

March 25, 1993Burnet County, Llano County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 25, 1993, 7:04 PM CST for Burnet County, Llano County, Texas. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Mar 25, 1993, 7:04 PM CST (01:04 UTC)
Expired
Mar 25, 1993, 7:30 PM CST
In force
26 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Burnet County, TX, Llano County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 1.1 hours before the alert went out and 167 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 00:00Z on 1993-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1993-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2367 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
123 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 260103
SVRAUS
TXC021-053-299-260130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
704 PM CST THU MAR 25 1993
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...BASTROP COUNTY...SOUTHERN BURNET COUNTY
   ...SOUTHERN LLANO COUNTY
 
AT 7 PM RADAR SHOWED 3 SEVERE THUNDERSTORMS LIKELY PRODUCING LARGE
DAMAGING HAIL. ONE 8 MILES SOUTHWEST OF ELGIN MOVING EAST AT 20 MPH.
 
ANOTHER 5 MILES NORTHWEST OF MARBLE FALLS MOVING TOWARD MARBLE FALLS.
 
AND A THIRD JUST SOUTH OF THE CITY OF LLANO.
 
 
WHEN THUNDERSTORMS AREx OCCURRING...GET INSIDE. DON'T USE TELE-
PHONES OR ELECTRICAL APPLIANCES UNLESS ABSOLUTELY NECESSARY
UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD BE CAUTIOUS OF
FLOODED ROADWAYS AND LOW WATER CROSSINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 6:22 PM CSTSevere Thunderstorm WarningEWXTravis53 min
Mar 25, 6:24 PM CSTSevere Thunderstorm WarningEWXBexar48 min
Mar 25, 7:04 PM CSTSevere Thunderstorm WarningEWXBastrop26 min
Mar 25, 7:32 PM CSTSevere Thunderstorm WarningEWXLee28 min

Nearby

Severe Thunderstorm Warnings in Texas, 1993Every severe thunderstorm warning in 1993

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.