Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 66, NWS Austin/San Antonio, TX

May 15, 1997Frio County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 15, 1997, 4:23 PM CDT for Frio County, Texas. It was in force for 67 min. 1 report 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
May 15, 1997, 4:23 PM CDT (21:23 UTC)
Expired
May 15, 1997, 5:30 PM CDT
In force
67 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Frio County, TX

What was reported inside it

TimeReportWhereRemark
May 15, 5:00 PM CDTHail 0.75Pearsall, TX

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

Del Rio, TX (KDRT), launched 12:00Z, 9.4 hours before the alert went out and 177 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, Del Rio, TX at 12:00Z on 1997-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3438 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, Del Rio, TX at 12:00Z on 1997-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.1939Sfc1 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
3438 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
3 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 152123 RRA
SVRSAT
TXC163-152230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
423 PM CDT THU MAY 15 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
 
   ...FRIO COUNTY
 
AT 420 PM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE
THUNDERSTORM 12 MILES WEST OF PEARSALL...WITH LITTLE MOVEMENT
INDICATED.
 
DAMAGING WIND...HAIL AND LOCALLY HEAVY RAIN IS POSSIBLE WITH
THIS THUNDERSTORM OVER FRIO COUNTY IN THE NEXT HOUR.
 
SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH.  THESE WINDS
BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES...
SOMETIMES BUILDINGS.  VERY LARGE HAIL CAN INJURE ANYONE CAUGHT
OUTSIDE.
 
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.
 
THIS IS A DANGEROUS STORM...TAKE COVER IMMEDIATELY IF YOU ARE IN
ITS PATH.  FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR BUILDING...STAY AWAY FROM WINDOWS!  SEVERE
THUNDERSTORMS CAN CAUSE AS MUCH DAMAGE AS A TORNADO.
 
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 15, 4:03 PM CDTSevere Thunderstorm WarningEWXComal57 min
May 15, 4:12 PM CDTSevere Thunderstorm WarningEWXBandera63 min
May 15, 4:45 PM CDTSevere Thunderstorm WarningEWXDimmit60 min
May 15, 4:53 PM CDTSevere Thunderstorm WarningEWXAtascosa67 min
May 15, 5:02 PM CDTSevere Thunderstorm WarningEWXBexar58 min
May 15, 5:27 PM CDTSevere Thunderstorm WarningEWXFrio63 min
May 15, 6:05 PM CDTSevere Thunderstorm WarningEWXBexar55 min
May 15, 6:42 PM CDTSevere Thunderstorm WarningEWXLlano63 min

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.