Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 53, NWS Austin/San Antonio, TX

April 26, 1997Hays County, Travis County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 26, 1997, 5:03 AM CDT for Hays County, Travis County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 26, 1997, 5:03 AM CDT (10:03 UTC)
Expired
Apr 26, 1997, 8:00 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Hays County, TX, Travis County, TX

The radar

The Austin/San Antonio radar (KEWX), 56 km from the middle of the area, began a volume at 10:07 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 00:00Z, 10.1 hours before the alert went out and 280 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 00:00Z on 1997-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3687 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 1997-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
3687 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
518 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 261005
FFWSAT
TXC209-453-261300-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
503 AM CDT SAT APR 26 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...HAYS COUNTY...TRAVIS COUNTY
 
AT 500 AM CDT STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING
AND CONTINUING TO MOVE ACROSS HAYS AND TRAVIS COUNTIES. 1 TO 3 INCHES OF
RAIN COULD FALL BY 7 AM. NEARLY TWO INCHES FELL IN AUSTIN ON FRIDAY
AND THE GOUND IS COMPLETELY SATURATED AND ANY RAIN THAT FALLS TODAY WILL
ONLY ADD TO A FLOODING PROBLEM.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE
RISING WATER DURING THREATENING RAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 9:56 PM CDTFlash Flood WarningEWXVal Verde3 hr
Apr 25, 11:04 PM CDTSevere Thunderstorm WarningEWXEdwards, Real56 min
Apr 25, 11:11 PM CDTSevere Thunderstorm WarningEWXMaverick2 hr
Apr 25, 11:50 PM CDTFlash Flood WarningEWXUvalde115 min
Apr 25, 11:50 PM CDTSevere Thunderstorm WarningEWXUvalde115 min
Apr 25, 11:54 PM CDTSevere Thunderstorm WarningEWXKerr66 min
Apr 26, 12:53 AM CDTFlash Flood WarningEWXBandera2 hr
Apr 26, 1:11 AM CDTFlash Flood WarningEWXDimmit2 hr
Apr 26, 1:11 AM CDTSevere Thunderstorm WarningEWXDimmit2 hr
Apr 26, 1:25 AM CDTFlash Flood WarningEWXGillespie, Kerr65 min
Apr 26, 1:25 AM CDTSevere Thunderstorm WarningEWXGillespie, Kerr65 min
Apr 26, 2:55 AM CDTSevere Thunderstorm WarningEWXAtascosa65 min
Apr 26, 3:12 AM CDTFlash Flood WarningEWXBandera3 hr
Apr 26, 5:43 AM CDTFlash Flood WarningEWXWilliamson3 hr

Nearby

Flash Flood Warnings in Texas, 1997Every flash flood 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.