1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Jul 27, 8:36 AM CST, 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 936 AM CDT TUE JUL 27 2004 .UPDATED DISCUSSION... A REGIONAL SURFACE ANALYSIS HAS MOSTLY CLEAR SKIES OVER THE EASTERN HALF OF THE FORECAST WARNING COUNTY AREA OF SOUTH CENTRAL TEXAS. EAST TO NORTHEAST WINDS PREVAILING WITH DEWPOINTS IN THE 60S. MORNING LOWS ACROSS THE REGION WERE MOSTLY IN THE UPPER 60S WITH A FEW READING IN THE MID 60S ACROSS THE HILL COUNTRY AND AROUND 70 OVER THE RIO GRANDE PLAINS REGION. KDFX 88 DOPPLER RADAR HAS SHOWERS AND THUNDERSTORMS OCCURRING OVER THE COUNTIES OF MAVERICK...KINNEY...EDWARDS AND VAL VERDE. MOVEMENT IS A SLOW DRIFT NORTHWARD...HOWEVER...NEW DEVELOPMENT IS ON THE EASTERN SIDE OF THE CONVECTION. THIS DUE TO THE AMPLE MOISTURE INFLOW FROM THE GULF AND THE UPPER LEVEL SHORTWAVE MOVING EASTWARD OUT OF MEXICO INTO THE WESTERN COUNTIES OF THE FORECAST WARNING AREA. HOURLY RAINFALL AMOUNTS OVER VAL VERDE COUNTY ARE AVERAGING AROUND 0.25 TO 0.50 INCHES WITH ISOLATED AMOUNTS OF 0.75 TO 1.00 INCHES IN THE STRONGER STORM CORES. THE COLD FRONT THAT BLOW THROUGH THE AREA SUNDAY NIGHT HAS SETTLED SOUTHWARD AND STARTED TO WASHOUT. PRECIPITATION CHANCES FORECAST ARE EXPECTED DEVELOPMENT DUE TO THE PROXIMITY OF THE COLD FRONTAL BOUNDARIES AND THE MOIST UNSTABLE ATMOSPHERE EXISTING OVER SOUTH CENTRAL TEXAS. MODEL GUIDANCE HAVE A UPPER LEVEL RIDGE TO THE NORTHEAST WITH TROUGHING OVER THE CENTRAL PLAIN STATES AND WESTWARD. THE 12Z GFS CONTINUES TO SHOW THE SAME SOLUTIONS AS THE EARLIER RUNS...MOVING THE UPPER LEVEL SHORTWAVE OUT OF MEXICO EAST-NORTHEAST PROVIDING TEXAS WITH A CONTINUED SHOT OF SHOWERS AND THUNDERSTORMS THROUGH THE MIDDLE OF THE WORKWEEK. THE BIGGEST DIFFERENCE IN THE VARIOUS MODELS IS THE TIMING AND RAINFALL AMOUNTS EFFECTING THE SOUTHERN PLAINS. THE GFS IS SLOWER THAN THE ECMWF AND UKMET. BUT MOVE THE SHORTWAVE OUT FASTER IN THE EXTENDED PERIODS AROUND DAY SEVEN. THE ECMWF AND UKMET KEEP THE SOUTHERN PLAINS COOLER THAN THE GFS OR ETA. THE GFS MOVES THE STALLED COLD FRONT NORTHWARD AS A WARM FRONT WITH DEVELOPING CONVECTION ACTIVITY. THE 4AM FORECAST PACKAGE HAS THIS HANDLED WILL. WILL HOWEVER HAVE TO MAKE A FEW NON-SIGNIFICANT CHANGES...UPDATING THE GRIDS AND BRINGING THE FORECASTS FOR INLINE WITH THE CURRENT OBSERVED WEATHER AND THE ONGOING TRENDS. && .PREV DISCUSSION... WORKING ON A GOOD SUPPLY OF ATMOSPHERIC MOISTURE WILL PRODUCE CHANCE POPS DURING THE DAYTIME AND EARLY EVENING TODAY AND WEDNESDAY AND THEN MAINLY IN THE EAST THURSDAY AND FRIDAY. PRECIP COVERAGE AND AMOUNTS TODAY DO NOT WARRANT REISSUING A FLASH FLOOD WATCH. TEMPS TO CONTINUE BELOW NORMAL THROUGH WEDNESDAY WITH READINGS APPROACHING RECORD LOW TONIGHT OF 68 AT AUS. UPPER LEVEL RIDGE TO BUILD SATURDAY THROUGH MONDAY...SHUTTING OFF SHOWER DEVELOPMENT AND LEADING TO HIGH TEMPS CLIMBING TO SLIGHTLY ABOVE NORMAL. && .EWX WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 500 AM CDT TUE JUL 27 2004 TXZ171>173-183>194-202>209-217>225-228-281100- ATASCOSA-BANDERA-BASTROP-BEXAR-BLANCO-BURNET-CALDWELL-COMAL-DEWITT- DIMMIT-EDWARDS-FAYETTE-FRIO-GILLESPIE-GONZALES-GUADALUPE-HAYS-KARNES- KENDALL-KERR-KINNEY-LAVACA-LEE-LLANO-MAVERICK-MEDINA-REAL-TRAVIS- UVALDE-VAL VERDE-WILLIAMSON-WILSON-ZAVALA- 500 AM CDT TUE JUL 27 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY. AN UPPER LEVEL DISTURBANCE OVER NORTHERN MEXICO WILL MOVE EAST ACROSS TEXAS TODAY. THIS SYSTEM WILL TRIGGER ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. A FEW OF THE STRONGER STORMS THIS AFTERNOON AND EVENING MAY PRODUCE LOCALLY HEAVY RAINFALL ALONG WITH GUSTY WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Showers and thunderstorms in the mid morning dropped between 1 and 1.5 inches of rain over Del Rio, with parts of the city reporting up to 2.5 inches. Flash flooding closed low water crossings through the late morning.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2004Every state in 2004This day in weather historyWarnings in Texas, July 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5417237.