2 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 2 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 May 10, 7:34 PM CST, 3 hours 56 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 834 PM CDT MON MAY 10 2004 .UPDATE... MADE A QUICK UPDATE TO UP POPS WEST AND LOWER EAST BEFORE MIDNIGHT AS CONVECTION DISSIPATING EAST AND WEST TX MCS APPROACHING VAL VERDE COUNTY. ALSO ADDED MENTION OF HEAVY RAIN IN THE FAR WEST BEFORE MIDNIGHT AS LOCALLY BRIEF HEAVY RAIN POSSIBLE. && .PREV DISCUSSION... WATER VAPOR IMAGERY TELLING MOST OF THE STORY. THE NEAREST SHORT WAVE TROUGH IN JUST SOUTH OF THE BIG BEND MOVING EAST AT 30-35 KT. THIS FEATURE WILL EXIT THE REGION BY MIDNIGHT. THE MAIN LOW CENTER WILL LAG BEHIND WHILE ANOTHER S/W TROUGH DROPS SOUTH AND ROTATES EAST TOWARD TEXAS AFTER SUNRISE TUESDAY. THIS SECOND S/W SHOULD ARRIVE AT MAX HEATING TIME. GFS SHOWS A SFC WAVE OVER THE LOWER VALLEY STRETCHING TO THE MIDDLE TEXAS COAST TUESDAY AFTERNOON IN RESPONSE TO THE APPROACHING TROUGH. NOW THE BIG PICTURE IS THAT WE WILL CONTINUE THE HAVE THE LONG WAVE TROUGH POSITION OVER THE ROCKIES THROUGH THURSDAY. THEN THE TROUGH FLATTENS ENOUGH TO BECOME ZONAL FRIDAY WITH A RIDGE BUILDING IN MONDAY. WITH THIS RIDGE COMES A COLD FRONT SAGGING INTO SOUTH CENTRAL TEXAS. PRECIPITABLE WATER VALUES SHOULD BE LOW ENOUGH AFTER FROPA TO TAKE RAIN OUT OF THE FORECAST. && .EWX WATCHES/WARNINGS/ADVISORIES...NONE. && 01/13
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 549 AM CDT MON MAY 10 2004 TXZ171>173-183>194-202>209-217>225-228-111100- 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- THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT. THERE IS A SLIGHT CHANCE OF SHOWERS THIS MORNING. THE CHANCE OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO INCREASE LATER THIS MORNING OR THIS AFTERNOON. DAYTIME HEATING AND A WEAK LOW PRESSURE AREA ALOFT...JUST EAST OF SOUTH CENTRAL TEXAS...WILL ALLOW SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP TODAY. THERE IS A CHANCE OF SHOWERS OR THUNDERSTORMS CONTINUING INTO THE EVENING HOURS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ANOTHER WEATHER SYSTEM WILL MOVE ACROSS SOUTH CENTRAL TEXAS TUESDAY...CAUSING A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS. HEAVY RAIN IS POSSIBLE. THERE IS A CHANCE OF SHOWERS OR THUNDERSTORMS THURSDAY AND FRIDAY...AS ANOTHER UPPER LEVEL DISTURBANCE MOVES ACROSS THE AREA FROM THE WEST. FOR SATURDAY AND SUNDAY THERE IS A SLIGHT CHANCE OF SHOWERS OR THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TUESDAY.
The national radar mosaic for the moment the first event began.
2 flash flood. Local standard time, as filed.
Up to 3 inches of rain fell in less than 2 hours over the northern part of Val Verde County, causing rapid flash flooding. Water was reported to be 4 feet over FM1024 at Howard's Draw.
A general 1 inch rainfall over northern Edwards County, with isolated totals of up to 3 inches, caused brief flash flooding. Highway 674 was closed due to high water.
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, May 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: 5399723, 5399724.