Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 85, NWS Austin/San Antonio, TX

May 24, 1997DeWitt County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 24, 1997, 4:21 PM CDT for DeWitt County, Texas. It was in force for 69 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
May 24, 1997, 4:21 PM CDT (21:21 UTC)
Expired
May 24, 1997, 5:30 PM CDT
In force
69 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County DeWitt County, TX

The radar

The Austin/San Antonio radar (KEWX), 95 km from the middle of the area, began a volume at 21:20 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.4 hours before the alert went out and 150 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 1997-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2214 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 1997-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
2214 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
109 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.

438 
WUUS1 KSAT 242123 RRA
SVRSAT
TXC123-242230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
421 PM CDT SAT MAY 24 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...NORTHERN DE WITT COUNTY
 
AT 420 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM LOCATED JUST SOUTH
OF HOCHHEIM. LARGE HAIL WILL ACCOMPAMY THIS STORM EFFECTING MUCH OF
NORTHERN DEWITT COUNTY. THE STORM IS MOVING TOWARDS THE EAST-NORTHEAST
AT 15 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.
 
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
May 24, 3:11 PM CDTFlash Flood WarningEWXLavaca2 hr
May 24, 3:58 PM CDTFlash Flood WarningEWXDeWitt2 hr
May 24, 5:11 PM CDTFlash Flood WarningEWXLavaca2 hr
May 24, 6:53 PM CDTFlash Flood WarningEWXLavaca2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.