Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 231, NWS Austin/San Antonio, TX

October 11, 1997Bastrop County, Travis County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 11, 1997, 12:11 AM CDT for Bastrop 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: Oct 11, 1997, 12:11 AM CDT (05:11 UTC)
Expired: Oct 11, 1997, 3:15 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

Counties Bastrop County, TX, Travis County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 5.2 hours before the alert went out and 278 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 866 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 513 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -70 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 110513
FFWSAT
TXC021-149-453-110815-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1211 AM CDT SAT OCT 11 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  315 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...BASTROP COUNTY...FAYETTE COUNTY...TRAVIS COUNTY
 
AT 1210 AM CDT...RADAR CONTINUED TO SHOW AN AREA OF HEAVY RAIN
FROM THE NORTHWEST PART OF FAYETTE COUNTY...EXTENDING NORTHWEST
TO PARTS OF BASTROP COUNTY AND TRAVIS COUNTY.  SHOWERS AND A
FEW THUNDERSTORMS PRODUCING THIS HEAY RAIN WERE MOVING NORTHWEST
AT 25 MPH.
 
FOR THE NEXT FEW HOURS PERIODS OF RAIN...HEAVY AT TIMES WILL
AFFECT FAYETTE...BASTROP AND TRAVIS COUNTIES.  FLOODING AT
LOW WATER CROSSINGS AND OTHER LOW LYING AREAS IS LIKELY.
 
AVOID ALREADY FLOODED AREAS.  TRAVELERS SHOULD NOT ATTEMPT TO
CROSS FLOODED ROADS.  IF YOUR VEHICLE STALLS...LEAVE IT AND MOVE
IMMEDIATELY TO HIGHER GROUND IF YOU CAN DO SO SAFELY.
 
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 AWAY FROM STORM DRAINS.

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

Local storm report, Oct 10, 7:45 PM CDT, 4 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
745 PM CDT FRI OCT 10 1997

TIME(CDT)  .....CITY LOCATION.....   STATE......EVENT/REMARKS...
           ....COUNTY LOCATION....

0646 PM    6 E FLATONIA              TX   HIGH WATER AT THE ENGLE/PRAHA
10/10/97   FAYETTE                        CROSSING

Local storm report, Oct 10, 7:49 PM CDT, 4 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX[
745 PM CDT FRI OCT 10 1997

TIME(CDT)  .....CITY LOCATION.....   STATE......EVENT/REMARKS...
           ....COUNTY LOCATION..b..

0646 PM    6 E FLATONIA              TX   HIGH WATER AT THE ENGLE/PRAHA
10/10/97   FAYETTE                        CROSSING

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 7:20 PM CDT	Flash Flood Warning	EWX	Fayette	3 hr
Oct 10, 10:15 PM CDT	Flash Flood Warning	EWX	Fayette	105 min
Oct 11, 12:11 AM CDT	Flash Flood Warning	EWX	Fayette	3 hr
Oct 11, 3:00 PM CDT	Flash Flood Warning	EWX	DeWitt, Karnes, Lavaca	6 hr

Nearby

Flash Flood Warnings in Texas, 1997 Every 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.