Alert archive / Texas / Flash Flood Warnings in 1996

Flash Flood Warning 21, NWS Austin/San Antonio, TX

June 26, 1996Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 26, 1996, 11:39 AM CDT for Lavaca County, Texas. It was in force for 4 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
Jun 26, 1996, 11:39 AM CDT (16:39 UTC)
Expired
Jun 26, 1996, 3:45 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 16:42 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, 4.7 hours before the alert went out and 188 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 1996-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 919 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 12:00Z on 1996-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
919 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
24 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 261650
FFWSAT
TXC149-285-287-262045-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1139 AM CDT WED JUN 26 1996
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  345 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...FAYETTE COUNTY...LAVACA COUNTY...LEE COUNTY
 
AT 1135 AM CDT...THE NEXRAD DOPPLER RADAR AT NEW BRAUNFELS
INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS...SOME
PRODUCING LOCALLY HEAVY RAINFALL IN EXCESS OF ONE INCH PER
HOUR...FROM GIDDINGS SOUTHWARD PAST LAGRANGE AND HALLETTSVILLE
TO VICTORIA AND ROCKPORT.  MOVEMENT WAS TOWARD THE NORTH AT
15 TO 20 MPH.
 
RAINFALL TOTALS IN FAYETTE AND LAVACA COUNTIES HAVE TOTALED
BETWEEN 2 AND 4 INCHES THIS MORNING.  ADDITIONAL TOTALS
BETWEEN 2 AND 4 INCHES ARE PASSING OVER THOSE AREAS THAT
HAVE ALREADY BEEN SOAKED FROM EARLIER RAINS...AND THESE
STORMS WILL SOON MOVE ACROSS LEE COUNTY.
 
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.
 
FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY.  CLOGGED STORM
DRAINS MAY CAUSE OTHER AREAS TO FLOOD.  DO NOT DRIVE THROUGH
FLOOD WATERS AND STAY AWvAY FROM STORM DRAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 9:10 AM CDTFlash Flood WarningEWXDeWitt3 hr
Jun 26, 11:39 AM CDTFlash Flood WarningEWXFayette, Lee4 hr

Nearby

Flash Flood Warnings in Texas, 1996Every flash flood warning in 1996

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.