Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 79, NWS Austin/San Antonio, TX

May 10, 2004Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 10, 2004, 11:30 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
May 10, 2004, 11:30 PM CDT (04:30 UTC)
Expired
May 11, 2004, 2:15 AM 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 00:00Z, 4.5 hours before the alert went out and 79 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 2004-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1480 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, Del Rio, TX at 00:00Z on 2004-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939Sfc1 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
1480 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 110427
FFWSAT
TXC465-110715-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1130 PM CDT MON MAY 10 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 CITIES OF...LANGTRY...JUNO...COMSTOCK

* UNTIL 215 AM CDT

* AT 1125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED  FLASH FLOODING FROM A LINE OF THUNDERSTORMS FROM NEAR 
  JUNO TO PANDALE TO LANGTRY...MOVING EASTWARD NEAR 15 MPH.


THIS LINE OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL OF UP TO TWO 
INCHES PER HOUR FROM LANGTRY TO PANDALE TO JUNO WILL CAUSE FLASH 
FLOODING OVER MUCH OF VAL VERDE COUNTY NORTH OF LAKE AMISTAD.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 2981 10173 2979 10143 2939 10099 3027 10071
          3028 10174

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 2:15 AM CDTFlash Flood WarningEWXVal Verde105 min
May 11, 2:21 AM CDTFlash Flood WarningEWXEdwards114 min
May 11, 4:15 AM CDTFlash Flood WarningEWXEdwards105 min
May 11, 6:31 AM CDTSevere Thunderstorm WarningEWXKinney, Maverick59 min
May 11, 7:36 AM CDTFlash Flood WarningEWXMaverick3 hr
May 11, 8:36 AM CDTFlash Flood WarningEWXDimmit, Zavala3 hr
May 11, 10:03 AM CDTFlash Flood WarningEWXFrio3 hr
May 11, 1:31 PM CDTSevere Thunderstorm WarningEWXLavaca44 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.