Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 12, NWS Austin/San Antonio, TX

February 21, 2003Hays County, Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Feb 21, 2003, 6:01 AM CST for Hays County, Travis County, Williamson County, 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
Feb 21, 2003, 6:01 AM CST (12:01 UTC)
Expired
Feb 21, 2003, 10:00 AM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Hays County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 0.0 hours before the alert went out and 277 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 2003-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Fort Worth, TX at 12:00Z on 2003-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
422 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
157 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 211203
FFWSAT
TXC209-453-491-211600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
601 AM CST FRI FEB 21 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 1000 AM CST

* AT 601 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  11 MILES SOUTHWEST OF HENLY...OR ABOUT 3 MILES EAST OF BLANCO...  
MOVING NORTHEAST AT 20 MPH.  SHOWERS AND THUNDERSTORMS ARE 
INCREASING OVER THE AREA WITH AN ADDITIONAL 1 TO 3 INCHES OF RAIN 
POSSIBLE THIS MORNING.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND. LAT...LON 3053 9723 2991 9799 3011 9826 3024 9822
          3090 9773

$$
1 follow-up statement
000 
WGUS74 KEWX 211305
FFSSAT
TXC031-053-171-209-453-491-211345-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
705 AM CST FRI FEB 21 2003

...FLASH FLOOD WARNING FOR WILLIAMSON...TRAVIS AND HAYS COUNTIES     
   UNTIL 10 AM CST...
...FLASH FLOOD WARNING FOR BURNET...BLANCO AND GILLESPIE COUNTIES    
   UNTIL 745 AM CST...
...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON FOR ALL OF     
   SOUTH CENTRAL TEXAS AND THE TEXAS HILL COUNTRY...

THUNDERSTORMS PRODUCING HEAVY RAINFALL WERE MOVING NORTHEAST AT 20 
MPH ACROSS BURNET...TRAVIS AND WILLIAMSON COUNTIES.  RAINFALL RATES 
OF 1 INCH AN HOUR CONTINUE WITH THESE STRONGER STORMS.    

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 8:06 PM CSTFlash Flood WarningEWXBurnet3 hr
Feb 20, 8:31 PM CSTFlash Flood WarningEWXFayette89 min
Feb 21, 3:47 AM CSTFlash Flood WarningEWXBandera, Gillespie, Kendall, Kerr3 hr
Feb 21, 3:51 AM CSTSevere Thunderstorm WarningEWXBandera, Kerr54 min
Feb 21, 4:39 AM CSTFlash Flood WarningEWXBlanco, Burnet3 hr
Feb 21, 4:47 AM CSTSevere Thunderstorm WarningEWXKendall, Kerr58 min
Feb 21, 6:38 AM CSTFlash Flood WarningEWXGillespie67 min

Nearby

Flash Flood Warnings in Texas, 2003Every flash flood warning in 2003

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.