Alert archive / Texas / Flash Flood Warnings in 1996

Flash Flood Warning 49, NWS Austin/San Antonio, TX

September 20, 1996Fayette County, Gonzales County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 20, 1996, 2:26 AM CDT for Fayette County, Gonzales County, Texas. It was in force for 2 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
Sep 20, 1996, 2:26 AM CDT (07:26 UTC)
Expired
Sep 20, 1996, 4:30 AM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Fayette County, TX, Gonzales County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 7.4 hours before the alert went out and 216 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 1996-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3386 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 00:00Z on 1996-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
3386 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1040 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
1.7
Supercell composite
9.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 200729
FFWSAT
TXC149-177-200930-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
226 AM CDT FRI SEP 20 1996
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL
430 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...FAYETTE COUNTY...GONZALES COUNTY
 
AT 225 AM CDT...NEXRAD DOPPLER RADAR INDICATED AN AREA OF SEVERE
THUNDERSTORMS MOVING THROUGH BASTROP AND CALDWELL COUNTIES INTO
FAYETTE AND GONZALES COUNTIES.  THIS AREA IS MOVING TOWARD THE
SOUTHEAST AT 20 MPH.
 
A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR FAYETTE AND GONZALES
COUNTIES UNTIL 4 AM CDT.
 
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..2.LOW-LYING 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
Sep 19, 9:55 PM CDTFlash Flood WarningEWXWilliamson2 hr
Sep 19, 9:55 PM CDTSevere Thunderstorm WarningEWXWilliamson2 hr
Sep 19, 10:45 PM CDTFlash Flood WarningEWXBurnet2 hr
Sep 19, 10:45 PM CDTSevere Thunderstorm WarningEWXBurnet2 hr
Sep 19, 10:56 PM CDTSevere Thunderstorm WarningEWXLlano64 min
Sep 19, 11:25 PM CDTSevere Thunderstorm WarningEWXTravis65 min
Sep 19, 11:58 PM CDTFlash Flood WarningEWXWilliamson2 hr
Sep 19, 11:58 PM CDTSevere Thunderstorm WarningEWXWilliamson2 hr
Sep 20, 12:24 AM CDTFlash Flood WarningEWXTravis2 hr
Sep 20, 12:24 AM CDTSevere Thunderstorm WarningEWXTravis2 hr
Sep 20, 1:02 AM CDTSevere Thunderstorm WarningEWXBurnet, Llano58 min
Sep 20, 1:09 AM CDTFlash Flood WarningEWXBastrop2 hr
Sep 20, 1:09 AM CDTSevere Thunderstorm WarningEWXBastrop2 hr
Sep 20, 1:26 AM CDTFlash Flood WarningEWXBurnet, Llano2 hr
Sep 20, 1:26 AM CDTSevere Thunderstorm WarningEWXBurnet, Llano2 hr
Sep 20, 1:43 AM CDTSevere Thunderstorm WarningEWXCaldwell62 min
Sep 20, 2:26 AM CDTSevere Thunderstorm WarningEWXFayette, Gonzales2 hr
Sep 20, 6:30 PM CDTSevere Thunderstorm WarningEWXBurnet60 min
Sep 20, 6:53 PM CDTTornado WarningEWXBurnet67 min

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.