Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 217, NWS Austin/San Antonio, TX

June 29, 200416 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 29, 2004, 1:35 PM CDT for 16 counties in Texas. It was in force for 4 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
Jun 29, 2004, 1:35 PM CDT (18:35 UTC)
Expired
Jun 29, 2004, 6:00 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Llano County, TX, Medina County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 53 km from the middle of the area, began a volume at 18:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 6.6 hours before the alert went out and 227 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 12:00Z on 2004-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 329 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2004-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
329 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
621 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
22 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 291833
FFWSAT
TXC013-019-029-031-053-055-091-163-171-187-209-259-265-299-325-493-
292300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
135 PM CDT TUE JUN 29 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET
  LLANO
  GILLESPIE
  BLANCO
  HAYS
  KERR
  KENDALL
  CALDWELL
  COMAL
  BANDERA
  GUADALUPE
  BEXAR
  MEDINA
  WILSON
  ATASCOSA
  FRIO

* UNTIL 600 PM CDT

* AT 130 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED 
  TO INDICATE MODERATE TO HEAVY RAINFALL ACROSS THE AREA. CURRENT
  TRENDS INDICATE ADDITIONAL WIDESPREAD RAINFALL OF 1 TO 2 INCHES...
  WITH SOME LOCATIONS RECEIVING UP TO 6 INCHES OF RAIN.

* THIS FLASH FLOOD WARNING INCLUDES THE EASTERN HALF OF THE HILL
  COUNTRY...I-35 CORRIDOR INCLUDING THE AUSTIN AND SAN ANTONIO METRO
  AREAS...AND PLAINS EAST OF THE I-35 CORRIDOR.

NUMEROUS LOW WATER CROSSINGS...CREEKS...UNDERPASSES...AND FARM-TO   
MARKET ROADS ARE LIKELY TO FLOOD ACROSS THE AREA THROUGH LATE   
AFTERNOON.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY REMEMBER...TURN AROUND...DONT DROWN ALLOW EXTRA TIME FOR 
THE AFTERNOON RUSH HOUR...PLAN TO USE ALTERNATE ROUTES...OR CONSIDER 
STAYING WHERE YOU ARE UNTIL THE FLOOD THREAT PASSES.

LAT...LON 2867 9934 2867 9834 2881 9815 2899 9821
          2940 9789 2964 9770 2984 9739 3004 9766
          2999 9774 3039 9824 3094 9789 3105 9799
          3091 9892 3053 9894 3051 9930 3028 9928
          3028 9973 2978 9962 2960 9942

$$
1 follow-up statement
000 
WGUS74 KEWX 292023
FFSSAT
TXC013-019-021-029-031-053-055-091-123-127-149-163-171-177-187-209-
255-259-265-285-287-299-325-385-453-463-491-493-507-292300-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
322 PM CDT TUE JUN 29 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 6 PM CDT FOR
WILLIAMSON...TRAVIS...BASTROP...LEE...FAYETTE...GONZALES...
HAYS...COMAL...CALDWELL...GUADALUPE...BEXAR...WILSON...ATASCOSA...
MEDINA...KARNES...DEWITT...LAVACA...KERR...KENDALL...BANDERA...
BLANCO...GILLESPIE...BURNET...LLANO...REAL...UVALDE...ZAVALA...
AND DIMMIT COUNTIES...

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 4 PM CDT WEDNESDAY
AFTERNOON.

NATIONAL WEATHER SERVICE DOPPLER RADARS CONTINUED TO INDICATE
RAIN FROM SHOWERS AND THUNDERSTORMS FORMING ACROSS SOUTH CENTRAL
TEXAS.

THIS AFTERNOON A SUMMER HEAVY RAIN EVENT CONTINUES OVER THE AREA.
LOCALLY HEAVY RAINS ARE POSSIBLE THE REST OF THE AFTERNOON.  RAINFALL
AMOUNTS OF 1 TO 3 INCHES IS EXPECTED...WITH ISOLATED 3 TO 7 INCH
AMOUNTS POSSIBLE.

AT 322 PM CDT...A LARGE AREA OF RAIN...FROM SHOWERS AND
THUNDERSTORMS...WAS FROM LEAKEY TO CARRIZAO SPRINGS AND
EAST TO BURNET...SAN ANTONIO...GEORGETOWN...AUSTIN...GIDDINGS...
SCHULENBURG AND HALLETTSVILLE.  MOVEMENT WAS NORTH AT 20 MPH.
THESE RAINS WILL CONTINUE THE REST OF THE AFTERNOON.

FREQUENT LIGHTNING AND WIND GUSTS 20 TO 40 MPH WILL ACCOMPANY
THE THUNDERSTORMS.

JUNE 2004 HAS BEEN VERY WET OVER PARTS OF CENTRAL AND SOUTH CENTRAL
TEXAS.  SOILS ARE SATURATED AND ADDITIONAL RAINFALL WILL QUICKLY
RUN OFF.  IF YOU LIVE IN OR NEAR A FLOOD PRONE AREA...BE PREPARED TO
MOVE TO SAFETY OR HIGHER GROUND QUICKLY IF A WARNING IS ISSUED OR
FLOODING IS OBSERVED.

MOTORISTS TRAVELING ACROSS SOUTH CENTRAL TEXAS SHOULD EXERCISE
EXTREME CAUTION IN AREAS OF HEAVY RAINFALL.  BE ESPECIALLY
CAUTIOUS IN LOW LYING AREAS...NEAR LOW WATER CROSSINGS AND
NEAR CREEK OR RIVERS.  DO NOT DRIVE INTO WATER THAT COVERS
THE ROADWAY.  REMEMBER...TURN AROUND DONT DROWN.

IN ADDITION TO THE THREAT FOR FLASH FLOODING...RIVER FLOODING COULD
ALSO BE A CONCERN.  HEAVY RAINFALL WILL RUN OFF QUICKLY AND CAUSE
RAPID RISES ON AREA CREEKS...STREAMS AND RIVERS.  IF YOU LIVE NEAR A
CREEK...STREAM OR RIVER...BE PREPARED TO MOVE QUICKLY TO HIGHER
GROUND IF A WARNING IS ISSUED OR FLOODING IS OBSERVED.

WITH ADDITIONAL HEAVY RAINFALL EXPECTED INTO WEDNESDAY...RESIDENTS
SHOULD CONTINUE TO MONITOR THE LATEST FORECAST AND WARNINGS.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 7:19 PM CDTSevere Thunderstorm WarningEWXZavala56 min
Jun 28, 10:55 PM CDTFlash Flood WarningEWXEdwards, Kinney3 hr
Jun 28, 11:21 PM CDTFlash Flood WarningEWXBandera3 hr
Jun 28, 11:27 PM CDTFlash Flood WarningEWXReal3 hr
Jun 29, 12:51 AM CDTFlash Flood WarningEWXUvalde6 hr
Jun 29, 1:56 AM CDTFlash Flood WarningEWXEdwards, Kinney4 hr
Jun 29, 2:30 AM CDTFlash Flood WarningEWXReal4 hr
Jun 29, 3:19 AM CDTFlash Flood WarningEWXBandera3 hr
Jun 29, 6:01 AM CDTFlash Flood WarningEWXBandera, Edwards, Real, Uvalde4 hr
Jun 29, 10:03 AM CDTFlash Flood WarningEWXBastrop, Travis, Williamson3 hr
Jun 29, 10:12 AM CDTFlash Flood WarningEWXAtascosa, Bexar, Caldwell, Comal, Guadalupe, Hays and 2 more4 hr
Jun 29, 10:36 AM CDTFlash Flood WarningEWXBandera, Kendall, Kerr4 hr
Jun 29, 11:44 AM CDTFlash Flood WarningEWXBlanco, Gillespie4 hr
Jun 29, 12:03 PM CDTFlash Flood WarningEWXBurnet, Llano4 hr
Jun 29, 12:35 PM CDTFlash Flood WarningEWXBexar3 hr
Jun 29, 12:49 PM CDTFlash Flood WarningEWXFayette, Lee5 hr
Jun 29, 1:00 PM CDTFlash Flood WarningEWXBastrop, Travis, Williamson5 hr
Jun 29, 1:49 PM CDTFlash Flood WarningEWXDeWitt, Gonzales, Karnes, Lavaca4 hr
Jun 29, 2:48 PM CDTFlash Flood WarningEWXDimmit, Real, Uvalde, Zavala3 hr
Jun 29, 4:00 PM CDTFlash Flood WarningEWXBexar6 hr

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; radar from the NEXRAD Level II archive.