Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 331, NWS Austin/San Antonio, TX

October 23, 2004Bandera County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 23, 2004, 12:03 AM CDT for Bandera 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 outline as issued.

The facts

Issued
Oct 23, 2004, 12:03 AM CDT (05:03 UTC)
Expired
Oct 23, 2004, 3:00 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Bandera County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 5.1 hours before the alert went out and 157 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 2004-10-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1809 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, Del Rio, TX at 00:00Z on 2004-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 square meters per square second.19395878Sfc1 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
1809 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1228 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
-0.6
Supercell composite
-3.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 230505
FFWSAT
TXC019-230800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1203 AM CDT SAT OCT 23 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 300 AM CDT

* AT 1154 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  VERY HEAVY RAIN FROM A LINE OF THUNDERSTORMS MOVING EAST AT 25 MPH 
  OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE MEDINA.

RAINFALL AMOUNTS OVER TWO INCHES WILL BE COMMON WITH THESE STORMS. 

HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND 
STREAMS...COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND 
STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND. DO NOT STAY IN FLOOD PRONE AREAS.

LAT...LON 2964 9960 2964 9898 2972 9882 2990 9919
      2991 9947

$$
2 follow-up statements
000 
WGUS74 KEWX 230634
FFSSAT
TXC019-230800-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
128 AM CDT SAT OCT 23 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 300 AM CDT FOR BANDERA
COUNTY...

AT 118 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS 
CENTRAL AND EASTERN BANDERA COUNTY. 

UP TO 5 INCHES OF RAIN HAS BEEN REPORTED NORTH OF MEDINA ALONG 
HIGHWAY 16. DOPPLER RADAR IS ESTIMATING 3 TO 4 INCHES ACROSS MUCH OF 
CENTRAL AND WESTERN BANDERA COUNTY.

FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
- DONT DROWN.

LAT...LON 2964 9960 2964 9898 2972 9882 2990 9919
      2991 9947

$$
000 
WGUS74 KEWX 230822
FFSSAT
TXC019-265-230845-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
321 AM CDT SAT OCT 23 2004

...THE FLASH FLOOD WARNINGS FOR BANDERA AND KERR COUNTIES HAVE
EXPIRED...

AT 315 AM CDT...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS
MOVING EAST AT 25 MPH...OUT OF BANDERA AND KERR COUNTIES. RAINFALL
AMOUNTS OF 3 TO 5 INCHES WERE COMMON FROM EARLIER STORMS IN CENTRAL
AND NORTHERN BANDERA AND SOUTHEAST KERR COUNTIES.

RAPID RUNOFF WILL CONTINUE FOR THE NEXT SEVERAL HOURS. DO NOT DRIVE
YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY OR PAST POLICE
BARRICADES...AND BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARD TO
TELL THE DEPTH OF WATER OVER ROADS.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 22, 9:58 PM CDTSevere Thunderstorm WarningEWXLlano47 min
Oct 22, 10:37 PM CDTSevere Thunderstorm WarningEWXBurnet53 min
Oct 23, 12:42 AM CDTFlash Flood WarningEWXKendall3 hr
Oct 23, 1:10 AM CDTFlash Flood WarningEWXKerr2 hr
Oct 23, 3:37 AM CDTFlash Flood WarningEWXKendall3 hr
Oct 23, 3:46 AM CDTFlash Flood WarningEWXBlanco3 hr
Oct 23, 5:25 AM CDTFlash Flood WarningEWXComal, Hays3 hr
Oct 23, 6:25 AM CDTFlash Flood WarningEWXKendall2 hr
Oct 23, 8:18 AM CDTFlash Flood WarningEWXCaldwell, Gonzales, Guadalupe3 hr
Oct 23, 10:26 AM CDTFlash Flood WarningEWXFayette, Lavaca3 hr
Oct 23, 4:50 PM CDTSevere Thunderstorm WarningEWXAtascosa55 min
Oct 23, 5:45 PM CDTSevere Thunderstorm WarningEWXAtascosa45 min

Nearby

Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004

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.