Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 64, NWS Austin/San Antonio, TX

April 11, 2004Fayette County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 11, 2004, 1:44 AM CDT for Fayette County, Texas. It was in force for 2 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: Apr 11, 2004, 1:44 AM CDT (06:44 UTC)
Expired: Apr 11, 2004, 4:00 AM CDT
In force: 2 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Fayette County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.7 hours before the alert went out and 240 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2170 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 110647
FFWSAT
TXC149-110900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
144 AM CDT SUN APR 11 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  FAYETTE

* UNTIL 400 AM CDT

* AT 144 AM...WEATHER SERVICE DOPPLER RADAR SHOWED AREAS OF 
RAIN...HEAVY AT TIMES...MOVING OVER FAYETTE COUNTY.  IN 
ADDITION...SHOWERS AND THUNDERSTORMS TO THE WEST AND SOUTHWEST OF 
FAYETTE COUNTY ARE EXPECTED TO MOVE ACROSS THE COUNTY IN THE NEXT 
HOUR. 

LOCALLY HEAVY RAIN IS LIKELY WITH THESE SHOWERS AND 
THUNDERSTORMS...AS THEY MOVE OVER THE SAME AREA IN THE NEXT 
1 TO 2 HOURS.  ADDITIONAL RAINS MAY CAUSE FLOODING AT LOW
WATER CROSSINGS AND LOW LYING FLOOD PRONE AREAS.  LOCALLY HEAVY
RAINS FELL SATURDAY AFTERNOON AND EVENING.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF 
SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES.  IN ADDITION...
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.


LAT...LON 2982 9721 2968 9694 2999 9665 3003 9696

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:04 PM CDT	Flash Flood Warning	EWX	Lavaca	56 min
Apr 10, 8:23 PM CDT	Flash Flood Warning	EWX	DeWitt, Lavaca	3 hr
Apr 10, 9:54 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	51 min
Apr 10, 10:38 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe	67 min
Apr 10, 10:57 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	63 min
Apr 10, 11:01 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	59 min
Apr 10, 11:29 PM CDT	Severe Thunderstorm Warning	EWX	Wilson	61 min
Apr 10, 11:58 PM CDT	Severe Thunderstorm Warning	EWX	Karnes	62 min
Apr 11, 12:48 AM CDT	Flash Flood Warning	EWX	DeWitt	3 hr
Apr 11, 1:02 AM CDT	Flash Flood Warning	EWX	Uvalde	3 hr
Apr 11, 1:17 AM CDT	Flash Flood Warning	EWX	Lavaca	3 hr
Apr 11, 1:57 AM CDT	Flash Flood Warning	EWX	Bandera, Medina, Real	3 hr
Apr 11, 3:00 AM CDT	Flash Flood Warning	EWX	Kinney, Maverick	3 hr
Apr 11, 3:50 AM CDT	Flash Flood Warning	EWX	Uvalde	2 hr

Nearby

Flash Flood Warnings in Texas, 2004 Every 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.