Alert archive / Texas / Flash Flood Warnings in 1991

Flash Flood Warning 29, NWS Austin/San Antonio, TX

August 14, 1991Travis County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 14, 1991, 8:36 PM CDT for Travis County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Aug 14, 1991, 8:36 PM CDT (01:36 UTC)
Expired
Aug 14, 1991, 10:45 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Travis County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 1.6 hours before the alert went out and 212 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, Stephenville/Cla, TX at 00:00Z on 1991-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Stephenville/Cla, TX at 00:00Z on 1991-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
727 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
32 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 KAUS 150138
FFWAUS
TXC453-150345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
836 PM CDT WED AUG 14 1991
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...SOUTHERN TRAVIS COUNTY
 
AT 835 PM CDT RADAR SHOWED VERY STRONG THUNDERSTORMS OVER SOUTH
TRAVIS COUNTY. THESE THUNDERSTORMS WERE MOVING EAST OR SOUTHEAST
AT LESS THAN 5 MILES AN HOUR.  MORE THAN ONE AND ONE-HALF INCH OF
RAIN IN LESS THAN ONE HALF HOUR HAS ACCOMPANIED SOME OF THESE
STORMS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER D9EPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 14, 7:32 PM CDT, 1 hour 4 minutes before
TXZ035>036-150200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
730PM CDT WED AUG 14 1991

   ...SHOWERS AND THUNDERSTORMS IN SOUTHCENTRAL TEXAS...

AT 725PM CDT SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST
THROUGH WILLIAMSON...TRAVIS...BLANCO AND GILLESPIE COUNTIES.

THE STRONGEST STORMS WERE JUST SOUTH OF HUTTO IN WILLIAMSON COUNTY
AND IN WEST CENTRAL TRAVIS COUNTY JUST WEST OF MO-PAC HIGHWAY.  SOME
OF THESE STRONGER STORMS COULD PRODUCE ONE TO TWO INCHES OF RAIN IN
A SHORT PERIOD OF TIME.  A WEATHER SPOTTER IN HUTTO REPORTED NEARLY
AN INCH AND A HALF OF RAIN IN A 20 MINUTE PERIOD BETWEEN 630 AND 7PM
THIS EVENING.

THESE THUNDERSTORMS WERE MOVING SLOWLY TOWARDS THE SOUTHEAST AND
MOTORISTS SHOULD NOT DRIVE INTO LOW AREAS WHERE WATER IS ACROSS
THE ROADWAY.

WITHROW

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 11:51 PM CDTFlash Flood WarningEWXTravis3 hr

Nearby

Flash Flood Warnings in Texas, 1991Every flash flood warning in 1991

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.