Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 59, NWS Austin/San Antonio, TX

August 5, 2005Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 5, 2005, 7:16 AM CDT for Travis County, Williamson 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
Aug 5, 2005, 7:16 AM CDT (12:16 UTC)
Expired
Aug 5, 2005, 10:15 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 0.3 hours before the alert went out and 260 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 2005-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 150 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, Fort Worth, TX at 12:00Z on 2005-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
150 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
40 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 051219
FFWEWX
TXC453-491-051515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
716 AM CDT FRI AUG 5 2005

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  WILLIAMSON
  TRAVIS

* UNTIL 1015 AM CDT

* AT 714 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SCATTERED THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM FLORENCE
  TO LAGO VISTA AND LAKEWAY...THEN EAST TO GEORGETOWN...ROUND ROCK
  AND COUPLAND. 

* LOCATIONS IN THE WARNING INCLUDE WEIR...SERENADA...LIBERTY HILL...
  JARRELL...GEORGETOWN DAM...GEORGETOWN...FLORENCE AND ANDICE.

THE STORMS WERE SHOWING RAINFALL RATES OF 1 TO 2 INCHES AND LITTLE 
OR NO MOVEMENT. THESE SAME AREAS HAD VERY HEAVY RAINFALL YESTERDAY 
AND LAST NIGHT...THUS RUNOFF WILL BE MORE RAPID.  

HEAVY RAINFALL WILL CAUSE FLASH FLOODING OVER SMALL CREEKS AND
STREAMS...URBAN AREAS...HIGHWAYS...STREETS...UNDERPASSES AND POORLY
DRAINED AREAS.

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 3041 9810 3031 9784 3033 9753 3043 9732
      3050 9720 3087 9763 3091 9783

$$
1 follow-up statement
000 
WGUS74 KEWX 051444
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
941 AM CDT FRI AUG 5 2005

TXC453-491-051515-
WILLIAMSON TX-TRAVIS TX-
941 AM CDT FRI AUG 5 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 1015 AM CDT FOR TRAVIS AND
WILLIAMSON COUNTIES...

AT 936 AM CDT...MOST OF THE STRONGEST SHOWERS AND THUNDERSTORMS OVER 
WILLIAMSON AND TRAVIS COUNTY HAVE DISSIPATED.  HOWEVER...THERE IS 
STILL A CLUSTER OF SHOWERS OVER NORTHERN WILLIAMSON COUNTY WHICH IS 
MOVING SOUTH AT 5 TO 10 MPH.  

RUNOFF FROM THE EARLIER STORMS AND NEW RAINFALL WILL CONTINUE TO 
PRODUCE FLASH FLOODING OF URBAN AREAS AS WELL AS SMALL STREAMS.

LOCATIONS IN THE WARNING INCLUDE WEIR...SERENADA AND JARRELL.

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 3041 9810 3031 9784 3033 9753 3043 9732
      3050 9720 3087 9763 3091 9783

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 7:22 PM CDTFlash Flood WarningEWXKendall113 min
Aug 4, 7:51 PM CDTFlash Flood WarningEWXGillespie2 hr
Aug 4, 9:08 PM CDTFlash Flood WarningEWXKendall82 min
Aug 5, 12:30 AM CDTFlash Flood WarningEWXWilliamson2 hr
Aug 5, 8:33 AM CDTFlash Flood WarningEWXBurnet117 min
Aug 5, 12:22 PM CDTFlash Flood WarningEWXEdwards, Kinney, Real3 hr
Aug 5, 1:26 PM CDTFlash Flood WarningEWXDeWitt3 hr
Aug 5, 1:28 PM CDTFlash Flood WarningEWXVal Verde3 hr
Aug 5, 2:16 PM CDTFlash Flood WarningEWXBexar3 hr
Aug 5, 2:52 PM CDTFlash Flood WarningEWXBandera, Medina3 hr
Aug 5, 2:58 PM CDTFlash Flood WarningEWXEdwards, Kinney, Real, Uvalde3 hr
Aug 5, 4:32 PM CDTFlash Flood WarningEWXGonzales118 min
Aug 5, 5:15 PM CDTFlash Flood WarningEWXFayette3 hr

Nearby

Flash Flood Warnings in Texas, 2005Every flash flood warning in 2005

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.