Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 25, NWS Austin/San Antonio, TX

April 4, 2004Maverick County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 4, 2004, 10:25 AM CDT for Maverick County, Val Verde County, Texas. It was in force for 185 days. 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 4, 2004, 10:25 AM CDT (15:25 UTC)
Expired
Oct 6, 2004, 10:00 AM CDT
In force
185 days
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Maverick County, TX, Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 3.4 hours before the alert went out and 81 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 12:00Z on 2004-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 100 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 12:00Z on 2004-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.193958Sfc1 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
100 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
261 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 041526
FFWSAT
TXC323-041900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1025 AM CDT SUN APR 4 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 200 PM CDT

* AT 1025 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY    
  RAIN FROM 7 MILES NORTH OF QUEMADO TO 17 MILES SOUTHWEST OF EL     
  INDIO...MOVING EAST AT 20 MPH.

RAINFALL AMOUNTS FROM THESE STORMS WILL AVERAGE TWO INCHES WITH 
ISOLATED TOTALS TO NEAR 4 INCHES THROUGH EARLY AFTERNOON. EXCESSIVE 
RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS 
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS 
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 2907 10068 2850 10045 2827 10025 2822 10021
          2822 10012 2908 10014

$$
1 follow-up statement
000 
WGUS54 KEWX 061258
FFWSAT
TXC465-061500-
/X.NEW.KEWX.FF.W.0025.041006T1256Z-041006T1500Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
756 AM CDT WED OCT 6 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  VAL VERDE

* UNTIL 1000 AM CDT

* AT 753 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN ACROSS PORTIONS OF VAL VERDE COUNTY NORTH OF A 
  LANGTRY TO COMSTOCK TO LOMA ALTA LINE. RAINFALL RATES OF UP TO ONE
  AND ONE HALF INCHES WERE NOTED AND WILL CONTINUE FOR THE NEXT TWO
  HOURS. 

* LOCATIONS IN THE WARNING INCLUDE PANDALE AND JUNO.

HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...
COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
- DONT DROWN.

LAT...LON 2980 10171 2971 10072 3028 10070 3028 10171

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 4, 9:32 AM CDTSevere Thunderstorm WarningEWXMaverick58 min
Apr 4, 10:58 AM CDTFlash Flood WarningEWXEdwards, Kinney185 days
Apr 4, 11:21 AM CDTSevere Thunderstorm WarningEWXMaverick54 min
Apr 4, 11:39 AM CDTSevere Thunderstorm WarningEWXKinney51 min
Apr 4, 11:42 AM CDTSevere Thunderstorm WarningEWXVal Verde63 min
Apr 4, 11:52 AM CDTSevere Thunderstorm WarningEWXUvalde, Zavala53 min
Apr 4, 12:01 PM CDTSevere Thunderstorm WarningEWXDimmit59 min
Apr 4, 12:15 PM CDTSevere Thunderstorm WarningEWXMaverick60 min
Apr 4, 12:49 PM CDTSevere Thunderstorm WarningEWXZavala71 min
Apr 4, 12:59 PM CDTSevere Thunderstorm WarningEWXDimmit61 min
Apr 4, 1:54 PM CDTFlash Flood WarningEWXKinney, Maverick, Val Verde187 days
Apr 4, 1:58 PM CDTSevere Thunderstorm WarningEWXDimmit, Zavala62 min
Apr 4, 2:08 PM CDTFlash Flood WarningEWXDimmit, Uvalde, Val Verde, Zavala187 days
Apr 4, 2:12 PM CDTTornado WarningEWXDimmit48 min
Apr 4, 2:27 PM CDTSevere Thunderstorm WarningEWXFrio, Medina63 min
Apr 4, 2:57 PM CDTSevere Thunderstorm WarningEWXDimmit63 min
Apr 4, 3:01 PM CDTTornado WarningEWXFrio59 min
Apr 4, 3:22 PM CDTSevere Thunderstorm WarningEWXDimmit38 min
Apr 4, 3:49 PM CDTFlash Flood WarningEWXComal, Frio, Guadalupe, Medina192 days
Apr 4, 4:19 PM CDTSevere Thunderstorm WarningEWXFrio56 min
Apr 4, 4:41 PM CDTFlash Flood WarningEWXAtascosa, Bexar, DeWitt, Fayette, Gonzales, Karnes and 2 more192 days
Apr 4, 4:50 PM CDTTornado WarningEWXMedina25 min
Apr 4, 4:51 PM CDTFlash Flood WarningEWXBexar, Comal, Dimmit, Guadalupe, Uvalde, Zavala192 days
Apr 4, 5:05 PM CDTSevere Thunderstorm WarningEWXAtascosa55 min
Apr 4, 5:29 PM CDTSevere Thunderstorm WarningEWXBexar61 min
Apr 4, 5:39 PM CDTTornado WarningEWXBexar36 min
Apr 4, 6:05 PM CDTSevere Thunderstorm WarningEWXAtascosa55 min
Apr 4, 6:32 PM CDTSevere Thunderstorm WarningEWXBexar, Guadalupe58 min
Apr 4, 6:45 PM CDTFlash Flood WarningEWXFrio, Medina90 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.