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 Aug 19, 8:00 PM CST, 1 hour 30 minutes earlier.
AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 900 PM CDT THU AUG 19 2004 .UPDATE...RAISING THE POPS OVER THE NORTHEAST COUNTIES DUE TO ONGOING CONVECTION. THE RESULTING OUTFLOW BOUNDARY IS MOVING SOUTH AT 10 TO 15 MPH WITH CONTINUED DEVELOPMENT MORE TOWARD THE EAST AS THE LOW LEVEL JET IS ORIENTED NORTHEAST TO SOUTHWEST. ALSO WITH THE HIGHS TODAY IN THE 100 TO 105 RANGE ALONG THE RIO GRANDE HAVE INCREASED MAX TEMPS TOMORROW, FRIDAY, IN THIS REGION TO THE LEVELS OF TODAY. OTHERWISE JUST MINOR TWEEKS TO THE WINDS AND OVERNIGHT TEMPS. .PREVIOUS DISCUSSION...WEAKER THAN USUAL HIGH ALOFT IS EVOLVING OVER THE WEST AND SOUTHWEST PART OF THE AREA THIS AFTERNOON...AS WEDNESDAY AFTERNOONS AND LAST NIGHTS SCATTERED RAIN MAKING SYSTEM ALOFT HAS MOVED TO EAST TEXAS. WILL SHOW LOW POPS EXTREME NORTH AND EXTREME EAST PART OF THE AREA FOR EARLY EVENING...WITH MUCH LOWER POPS TO THE WEST AND SOUTHWEST. LATE TONIGHT THROUGH FRIDAY FORECASTS SHOW 2ND WAVE OF ENERGY MOVING MAINLY NORTH OF SOUTH CENTRAL TEXAS. THIS PATTERN BODES WELL TO KEEP SLIGHT CHANCE OF SHOWERS OR THUNDERSTORMS OVER THE NORTH AND EAST PART OF THE AREA...WITH MOSTLY STABLE CONDITIONS TO BRIEFLY MARGINALLY UNSTABLE CONDITIONS OVER THE WEST AND SOUTHWEST PART OF SOUTH CENTRAL TEXAS. THIS IS BASED ON COMPOSITE OF SOLUTIONS IN THE PAST FEW DAYS AND AUGUST 2004 TRENDS. MORE UNSTABLE CONDITIONS COULD EVOLVE LATE FRIDAY NIGHT AND SATURDAY...AS ANOTHER WEATHER SYSTEM ALOFT COMES OUT OF THE WEST...MAINLY NORTH OF SOUTH CENTRAL TEXAS. CHANCE OF RAIN WITH THIS FEATURE IS EXPECTED TO BE LOW AND NEAR NORMAL FOR LATE AUGUST...IN THE VICINITY OF AROUND 20 PERCENT...WITH 30 PERCENT OVER THE EASTERN PART OF SOUTH CENTRAL TEXAS. SUNDAY AND MONDAYS WEATHER PATTERN SHOWS SIGNS OF A LITTLE MORE STABLE CONDITIONS...AS WEAK HIGH ALOFT EVOLVES. TODAYS FORECASTS FOR NEXT WEEK STILL SHOW GENERAL PATTERN OF TROF OVER WESTERN U.S. AND RIDGE ALOFT OVER THE EASTERN U.S...WITH MAIN TRACK OF RAIN MAKING WEATHER SYSTEMS A LITTLE FARTHER NORTH THAN SHOWN YESTERDAY. ISOLATED TO A SLIGHT CHANCE OF SHOWERS SHOWS UP OVER THE EAST PART OF SOUTH CENTRAL TEXAS AND POSSIBLY IN THE EVENING OVER WESTERN SECTIONS NEAR THE RIO GRANGE. BY WEDNESDAY AND THURSDAY OF NEXT WEEK...FORECASTS SHOW SOUTHERN PART OF WEATHER SYSTEM GETTING CLOSE TO THE AREA WEDNESDAY...STILL MAINLY NORTH OF THE AREA...FOLLOWED BY A LITTLE MORE STABLE CONDITIONS FOR THURSDAY...AS WEAK HIGH ALOFT ATTEMPTS TO FORM OVER AREA...WITH HOT AFTERNOON TEMPS. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 76 96 74 95 / 50 30 30 30 AUSTIN BERGSTROM INTL AIRPORT 73 96 71 95 / 50 30 30 30 DEL RIO INTL AIRPORT 77 100 76 100 / 10 10 10 20 SAN ANTONIO INTL AIRPORT 76 96 74 95 / 10 10 10 20 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && 06/02/25
HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 610 PM CDT THU AUG 19 2004 TXZ171>173-183>194-202>209-217>225-228-201100- ATASCOSA-BANDERA-BASTROP-BEXAR-BLANCO-BURNET-CALDWELL-COMAL-DE WITT- 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- 610 PM CDT THU AUG 19 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... SCATTERED THUNDERSTORMS ACROSS THE HILL COUNTRY WILL PRODUCE LOCALLY HEAVY RAINFALL, WIND GUSTS TO 45 MPH AND DEADLY CLOUD TO GROUND LIGHTNING. OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION NOT REQUIRED.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Flash flooding developed during the late night hours of August 19 as thunderstorms moved repeatedly over northern Williamson County. General rainfall totals in the event were around 2 inches, with the highest totals of 5 inches near Bartlett.
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, August 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: 5420603.