Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 54, NWS Austin/San Antonio, TX

August 31, 2001Bandera County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 31, 2001, 8:00 PM CDT for Bandera 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
Aug 31, 2001, 8:00 PM CDT (01:00 UTC)
Expired
Aug 31, 2001, 10:00 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Bandera County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.0 hours before the alert went out and 160 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, Del Rio, TX at 00:00Z on 2001-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1155 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, Del Rio, TX at 00:00Z on 2001-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
1155 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1977 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
51 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 010103
FFWSAT
TXC019-010300-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  BANDERA

* UNTIL 1000 PM CDT

* AT 800 PM...WEATHER SERVICE DOPPLER RADAR INDICATE NUMEROUS 
  THUNDERSTORMS OVER BANDERA COUNTY PRODUCING RAINFALL AMOUNTS OF
  2 TO 3 INCHES AN HOUR.

FLASH FLOODING WILL OCCUR AND PERSONS NEED TO MOVE TO HIGHER GROUND
NOW.

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.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 31, 2:45 PM CDT, 5 hours 15 minutes earlier.

Area forecast discussion, Aug 31, 2:45 PM CDT, 5 hours 15 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CDT FRI AUG 31 2001

MAIN BODY OF RAIN CONTINUES TO EXIT THE SOUTHEAST COUNTIES AS UPPER
LOW SLIDES EASTWARD.  BEHIND THE LOW IS ANOTHER IMPULSE THAT IS
TRIGGERING CONVECTION FROM DALLAS/FORT WORTH TO SAN ANGELO AND
MIDLAND/ODESSA.  THIS SECONDARY AREA OF CONVECTION IS MOVING
STEADILY SOUTHWARD AND WILL BE IN THE HILL COUNTRY BEFORE SUNSET AND
INTO SOUTH CENTRAL TEXAS LATER TONIGHT IF ALL HOLDS TOGETHER.  AS A
RESULT...WILL GO AHEAD AND KEEP THE FLASH FLOOD WATCH UP THROUGH
TONIGHT.  RAINFALL TOTALS WILL NOT BE AS GREAT AS PAST DAYS BUT
SINCE THE GROUND IS SO SATURATED AND CREEKS AND RIVERS ARE RUNNING
BANKFULL OR HIGHER...CANT SEE TAKING THE WATCH DOWN UNTIL ALL
PRECIP IS DEFINITELY OUT OF THE AFFECTED WATCH AREA...AND THAT MAY
NOT BE UNTIL SATURDAY NIGHT OR SUNDAY...ALTHOUGH SOME POPS WILL
REMAIN IN THE FORECAST THIS COMING WEEK.  LESSER CLOUD COVER WILL
ALLOW MAX TEMPS TO WARM UP THIS WEEKEND FOLLOWING SEVERAL DAYS OF
WELL-BELOW HIGHS.

.PRELIMINARY NUMBERS...
AUS 71/89/72/90 5532
DRT 75/93/75/95 3321
SAT 73/91/73/92 5532

.EWX...FLASH FLOOD WATCH SOUTH CENTRAL TEXAS AND ADJACENT TEXAS
HILL COUNTRY TONIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 7:02 PM CDTFlash Flood WarningEWXKerr118 min
Aug 31, 7:40 PM CDTFlash Flood WarningEWXBlanco, Kendall2 hr
Aug 31, 7:45 PM CDTFlash Flood WarningEWXBexar, Comal, Hays, Travis3 hr
Aug 31, 9:02 PM CDTFlash Flood WarningEWXKerr118 min
Aug 31, 10:05 PM CDTFlash Flood WarningEWXBlanco, Kendall85 min
Aug 31, 10:45 PM CDTFlash Flood WarningEWXAtascosa, Bastrop, Bexar, Caldwell, Comal, Guadalupe and 3 more3 hr
Aug 31, 11:57 PM CDTFlash Flood WarningEWXGonzales, Karnes4 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.