Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 280, NWS Austin/San Antonio, TX

August 31, 2004Real County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 31, 2004, 2:00 PM CDT for Real 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
Aug 31, 2004, 2:00 PM CDT (19:00 UTC)
Expired
Aug 31, 2004, 5:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Real County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 7.0 hours before the alert went out and 102 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 2004-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1186 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2004-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
1186 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 311903
FFWSAT
TXC385-312200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
200 PM CDT TUE AUG 31 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 500 PM CDT

* AT 153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  VERY HEAVY RAIN FROM THUNDERSTORMS 13 MILES NORTH OF CAMP          
  WOOD...OR ABOUT 15 MILES NORTHWEST OF LEAKEY. THE STORMS PRODUCING 
  VERY HEAVY RAIN WAS NEARLY STATIONARY.

* THE STORMS PRODUCING VERY HEAVY RAIN WILL PERSIST OVER MOST OF 
  REAL COUNTY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.

LAT...LON 2979 10001 2986 10003 2990 10000 3001 9999
      3000 9975 2965 9966 2965 9966 2966 10001
      2977 10004

$$
2 follow-up statements
000 
WGUS74 KEWX 311951
FFSSAT
TXC385-312200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
247 PM CDT TUE AUG 31 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 500 PM CDT FOR REAL
COUNTY...

AT 245 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN.  THIS STORM WAS
LOCATED 9 MILES NORTHWEST OF LEAKEY. THE THUNDERSTORM WITH EXCESSIVE 
RAIN WAS NEARLY STATIONARY.  OTHER THUNDERSTORMS WITH HEAVY RAIN ARE 
MOVING NORTH AT 15 MPH INTO REAL COUNTY.  DOPPLER RADAR HAS 
ESTIMATED 1 TO 3 INCHES OF RAIN HAVE FALLEN IN AN AREA 10 MILES 
NORTH OF LEAKEY AND 12 MILES NORTH OF BARKSDALE. 

THE THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.

LAT...LON 2979 10001 2986 10003 2990 10000 3001 9999
      3000 9975 2965 9966 2965 9966 2966 10001
      2977 10004

$$
000 
WGUS74 KEWX 312057
FFSSAT
TXC385-312200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
353 PM CDT TUE AUG 31 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 500 PM CDT FOR REAL
COUNTY...

AT 343 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN.  THESE STORMS WERE 
LOCATED 10 MILES SOUTH AND SOUTHEAST OF LEAKEY. THE THUNDERSTORMS 
WITH EXCESSIVE RAIN WERE MOVING EAST AT 15 MPH.
 
ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE POSSIBLE IN REAL COUNTY 
AS MODERATE RAINS TRAVERSE THE COUNTY.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.

LAT...LON 2979 10001 2986 10003 2990 10000 3001 9999
      3000 9975 2965 9966 2965 9966 2966 10001
      2977 10004

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 11:46 PM CDTFlash Flood WarningEWXVal Verde3 hr
Aug 31, 2:49 AM CDTFlash Flood WarningEWXVal Verde3 hr
Aug 31, 3:10 PM CDTFlash Flood WarningEWXUvalde3 hr

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.