Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 52, NWS Austin/San Antonio, TX

April 25, 1997Caldwell County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 25, 1997, 1:53 PM CDT for Caldwell County, Texas. It was in force for 67 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 25, 1997, 1:53 PM CDT (18:53 UTC)
Expired
Apr 25, 1997, 3:00 PM CDT
In force
67 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Caldwell County, TX

What was reported inside it

TimeReportWhereRemark
Apr 25, 2:00 PM CDTHail 0.75Luling, TX
Apr 25, 2:05 PM CDTHail 1.25Luling, TX
Apr 25, 2:10 PM CDTHail 1.5Luling, TXDamage was reported to numerous vehicles due to the 1.5 inch hail in Luling.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 6.9 hours before the alert went out and 236 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 12:00Z on 1997-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2699 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 12:00Z on 1997-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
2699 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
281 m²/s²
Significant tornado parameter
3.2
Supercell composite
13.7

Open this sounding in Storm Lab

The text

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

197 
WUUS1 KSAT 251855
SVRSAT
TXC055-252000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
153 PM CDT FRI APR 25 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...CALDWELL COUNTY
 
AT 255 PM CDT...A SEVERE THUNDERSTORM WAS MOVING INTO SOUTHERN CALDWELL
COUNTY NEAR LULING. THIS STORM WILL MOVE NORTH AT 25 MPH.
 
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.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 8:33 AM CDTFlash Flood WarningEWXVal Verde117 min
Apr 25, 10:20 AM CDTFlash Flood WarningEWXEdwards115 min
Apr 25, 11:11 AM CDTSevere Thunderstorm WarningEWXBlanco64 min
Apr 25, 11:17 AM CDTSevere Thunderstorm WarningEWXBurnet58 min
Apr 25, 11:52 AM CDTFlash Flood WarningEWXBlanco, Burnet, Llano4 hr
Apr 25, 1:10 PM CDTFlash Flood WarningEWXGillespie6 hr
Apr 25, 2:30 PM CDTSevere Thunderstorm WarningEWXBexar60 min
Apr 25, 2:41 PM CDTFlash Flood WarningEWXBastrop, Caldwell4 hr
Apr 25, 2:47 PM CDTFlash Flood WarningEWXTravis, Williamson4 hr
Apr 25, 3:24 PM CDTFlash Flood WarningEWXFayette4 hr
Apr 25, 3:59 PM CDTFlash Flood WarningEWXGonzales3 hr
Apr 25, 5:16 PM CDTFlash Flood WarningEWXLavaca3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.