Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 47, NWS Austin/San Antonio, TX

August 31, 2001Fayette County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 31, 2001, 8:32 AM CDT for Fayette 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 31, 2001, 8:32 AM CDT (13:32 UTC)
Expired
Aug 31, 2001, 11:00 AM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Fayette County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 1.5 hours before the alert went out and 332 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, Fort Worth, TX at 12:00Z on 2001-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1197 joules per kilogram.LCLEL10008507005003002001001 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, Fort Worth, TX at 12:00Z on 2001-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
1197 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-18 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 
WGUS54 KEWX 311336
FFWSAT
TXC149-311100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
832 AM CDT FRI AUG 31 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAYETTE

* UNTIL 1100 AM CDT

* AT 832 AM...WEATHER SERVICE DOPPLER RADAR INDICATED WIDESPREAD
  SHOWERS WITH OCCASIONAL HEAVY RAIN MOVING INTO AND OVER FAYETTE
  COUNTY...MOVING NORTHEAST AT 20 MPH.  RAINFALL RATES OF 1 TO 2
  INCHES CAN BE EXPECTED WITH THESE SHOWERS AS THEY SLOWLY TRACK 
  ACROSS THE ALREADY SATURATED GROUND. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.


LAT...LON 2979 9727 2966 9710 2966 9690 2997 9665
          3012 9685 3000 9704

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 1:55 AM CDTFlash Flood WarningEWXDeWitt, Lavaca2 hr
Aug 31, 3:33 AM CDTFlash Flood WarningEWXGonzales3 hr
Aug 31, 4:00 AM CDTFlash Flood WarningEWXDeWitt, Lavaca4 hr
Aug 31, 4:43 AM CDTFlash Flood WarningEWXBexar, Caldwell, Comal, Guadalupe, Hays3 hr
Aug 31, 6:28 AM CDTFlash Flood WarningEWXGonzales3 hr
Aug 31, 7:37 AM CDTFlash Flood WarningEWXKarnes113 min
Aug 31, 7:41 AM CDTFlash Flood WarningEWXBexar, Comal, Hays, Travis2 hr
Aug 31, 8:20 AM CDTFlash Flood WarningEWXDeWitt, Lavaca3 hr
Aug 31, 9:25 AM CDTFlash Flood WarningEWXGonzales, Karnes3 hr
Aug 31, 10:55 AM CDTFlash Flood WarningEWXDeWitt, Karnes, Lavaca2 hr
Aug 31, 12:50 PM CDTFlash Flood WarningEWXDeWitt, Karnes, Lavaca2 hr

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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.