Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 365, NWS Austin/San Antonio, TX

November 17, 20049 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 17, 2004, 2:07 AM CST for 9 counties in Texas. It was in force for 6 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 17, 2004, 2:07 AM CST (08:07 UTC)
Expired
Nov 17, 2004, 8:00 AM CST
In force
6 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, Comal County, TX, Guadalupe County, TX, Medina County, TX, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 38 km from the middle of the area, began a volume at 08:09 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 00:00Z, 8.1 hours before the alert went out and 242 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 2004-11-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2004-11-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -49 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
727 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
-49 m²/s²
0-3 km storm-relative helicity
-12 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 170811
FFWEWX
TXC013-019-029-031-053-091-187-325-491-171400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
207 AM CST WED NOV 17 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET
  WILLIAMSON
  BLANCO
  COMAL
  BANDERA
  GUADALUPE
  BEXAR
  MEDINA
  ATASCOSA

* UNTIL 800 AM CST

* AT 206 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  MODERATE TO HEAVY RAINFALL CONTINUING ACROSS THE WARNED COUNTIES.
  NUMEROUS ROADS REMAINED CLOSED DUE TO RUNOFF FROM EARLIER STORMS.
  ADDITIONAL SHOWERS AND THUNDERSTORMS ARE DEVELOPING SOUTHWEST
  OF THE WARNED AREAS...MOVING NORTHEAST.

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

ADDITIONAL RAINFALL WILL ALSO 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 2914 9934 2912 9865 2869 9873 2864 9833
      2920 9846 2964 9814 2943 9804 2953 9787
      2963 9771 2976 9799 2993 9823 3012 9832
      3048 9815 3066 9809 3070 9793 3046 9733
      3069 9727 3101 9836 3055 9827 3024 9860
      3004 9842 2982 9842 2965 9875 2984 9911
      2982 9937 2969 9933

$$
1 follow-up statement
000
WGUS74 KEWX 171355
FFSEWX
TXC019-325-171400-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
748 AM CST WED NOV 17 2004

...FLASH FLOOD WARNING FOR BANDERA AND MEDINA COUNTIES WILL
BE ALLOWED TO EXPIRED AT 8 AM...

ALTHOUGH MINOR FLOODING MAY CONTINUE FOR A FEW HOURS IN SOME AREAS...
NO SIGNFICANT FLASH FLOODING IS EXPECTED AND THE WARNING WILL BE
ALLOWED TO EXPIRE.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 16, 6:03 PM CSTTornado WarningEWXAtascosa, Bandera, Bexar, Frio, Kendall, Medina42 min
Nov 16, 6:21 PM CSTTornado WarningEWXGillespie, Llano24 min
Nov 16, 6:22 PM CSTFlash Flood WarningEWXGillespie, Kendall, Kerr, Llano4 hr
Nov 16, 6:46 PM CSTTornado WarningEWXGillespie, Llano44 min
Nov 16, 6:47 PM CSTTornado WarningEWXKendall28 min
Nov 16, 7:13 PM CSTTornado WarningEWXBexar32 min
Nov 16, 7:45 PM CSTTornado WarningEWXBexar15 min
Nov 16, 7:52 PM CSTTornado WarningEWXBlanco38 min
Nov 16, 7:57 PM CSTTornado WarningEWXComal48 min
Nov 16, 8:22 PM CSTFlash Flood WarningEWXBlanco, Comal, Guadalupe3 hr
Nov 16, 8:28 PM CSTTornado WarningEWXBlanco32 min
Nov 16, 8:44 PM CSTTornado WarningEWXComal, Hays31 min
Nov 16, 9:15 PM CSTFlash Flood WarningEWXEdwards, Kerr, Kinney, Real, Uvalde, Val Verde6 hr
Nov 16, 9:59 PM CSTFlash Flood WarningEWXGillespie, Kendall, Llano4 hr
Nov 16, 10:04 PM CSTFlash Flood WarningEWXHays, Travis3 hr
Nov 16, 11:10 PM CSTFlash Flood WarningEWXAtascosa, Bandera, Bexar, Blanco, Comal, Guadalupe and 1 more3 hr
Nov 16, 11:22 PM CSTFlash Flood WarningEWXBurnet, Williamson3 hr
Nov 17, 12:14 AM CSTFlash Flood WarningEWXHays, Travis3 hr
Nov 17, 1:48 AM CSTFlash Flood WarningEWXGillespie, Kendall, Llano117 min
Nov 17, 3:13 AM CSTFlash Flood WarningEWXEdwards, Kerr, Kinney, Real, Uvalde, Val Verde4 hr
Nov 17, 3:21 AM CSTFlash Flood WarningEWXHays, Travis6 hr
Nov 17, 3:43 AM CSTFlash Flood WarningEWXGillespie, Kendall, Llano5 hr
Nov 17, 6:24 AM CSTFlash Flood WarningEWXWilson3 hr
Nov 17, 7:25 AM CSTFlash Flood WarningEWXAtascosa, Bexar, Blanco, Burnet, Caldwell, Comal and 7 more4 hr
Nov 17, 10:28 AM CSTFlash Flood WarningEWXBastrop, DeWitt, Fayette, Lavaca, Lee3 hr
Nov 17, 10:56 AM CSTTornado WarningEWXLavaca49 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; radar from the NEXRAD Level II archive.