Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 77, NWS Austin/San Antonio, TX

April 25, 2004Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 25, 2004, 6:13 PM CDT for Val Verde 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: Apr 25, 2004, 6:13 PM CDT (23:13 UTC)
Expired: Apr 25, 2004, 9:15 PM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.2 hours before the alert went out and 88 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: 319 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 252315
FFWSAT
TXC465-260215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
613 PM CDT SUN APR 25 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS
  THIS INCLUDES THE CITY OF JUNO

* UNTIL 915 PM CDT

* AT 602 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM 16 MILES WEST OF JUNO...MOVING
  EAST AT 5 MPH.

* OTHER DEVELOPING STORMS FROM LOMA ALTA TO 10 MILES NORTH OF DEL 
RIO ARE MOVING NORTH AT 5 MPH.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND
ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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 3026 10149 3009 10144 2932 10076 3054 10081

$$

1 follow-up statement

000 
WGUS74 KEWX 260027
FFSSAT
TXC465-260215-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
724 PM CDT SUN APR 25 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 915 PM CDT FOR VAL VERDE
COUNTY...

AT 714 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM JUST SOUTH OF 
PANDALE TO LOMA ALTA.  THIS LINE OF STORMS HAS SHOWN LITTLE MOVEMENT 
OVER THE PAST HOUR.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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.

LAT...LON 3026 10149 3009 10144 2932 10076 3054 10081

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 9:35 AM CDT	Flash Flood Warning	EWX	Karnes, Wilson	3 hr
Apr 25, 10:34 AM CDT	Flash Flood Warning	EWX	Gonzales	3 hr
Apr 25, 11:00 AM CDT	Flash Flood Warning	EWX	DeWitt, Lavaca	4 hr
Apr 25, 11:09 AM CDT	Flash Flood Warning	EWX	Fayette	4 hr
Apr 25, 5:29 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Real	61 min
Apr 25, 5:54 PM CDT	Flash Flood Warning	EWX	Edwards, Kinney	2 hr
Apr 25, 6:27 PM CDT	Severe Thunderstorm Warning	EWX	Real	63 min
Apr 25, 6:32 PM CDT	Severe Thunderstorm Warning	EWX	Edwards	58 min
Apr 25, 6:51 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	54 min

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.