Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 421, NWS Austin/San Antonio, TX

November 23, 2004Burnet County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 23, 2004, 6:12 PM CST for Burnet 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
Nov 23, 2004, 6:12 PM CST (00:12 UTC)
Expired
Nov 23, 2004, 9:15 PM CST
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Burnet County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.2 hours before the alert went out and 248 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 00:00Z on 2004-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 489 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, Fort Worth, TX at 00:00Z on 2004-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -113 square meters per square second.1939587897117Sfc1 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
489 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
755 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
-113 m²/s²
0-3 km storm-relative helicity
-140 m²/s²
Significant tornado parameter
-0.4
Supercell composite
-1.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 240013
FFWEWX
TXC053-491-240315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
612 PM CST TUE NOV 23 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 915 PM CST

* AT 606 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM THUNDERSTORMS MOVING INTO THE WARNED AREA.


LAT...LON 3054 9751 3056 9785 3058 9792 3061 9792
      3064 9797 3064 9804 3058 9808 3060 9828
      3099 9827 3075 9739 3072 9732

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 23, 6:05 PM CSTTornado WarningEWXAtascosa55 min
Nov 23, 6:07 PM CSTTornado WarningEWXWilliamson53 min
Nov 23, 6:10 PM CSTTornado WarningEWXFrio65 min
Nov 23, 6:40 PM CSTTornado WarningEWXWilson65 min
Nov 23, 6:55 PM CSTTornado WarningEWXAtascosa65 min
Nov 23, 7:08 PM CSTTornado WarningEWXKarnes67 min
Nov 23, 7:13 PM CSTFlash Flood WarningEWXKarnes3 hr
Nov 23, 7:33 PM CSTTornado WarningEWXDeWitt57 min
Nov 23, 7:45 PM CSTFlash Flood WarningEWXDeWitt3 hr
Nov 23, 8:01 PM CSTSevere Thunderstorm WarningEWXFayette, Lee59 min
Nov 23, 8:28 PM CSTSevere Thunderstorm WarningEWXLavaca47 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.