11 flash flood, 1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it; 11 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 Jun 27, 8:30 AM CST, 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 930 AM CDT SUN JUN 27 2004 .UPDATE DISCUSSION... ANALYSIS HAS UPPER LEVEL LOW EJECTING NORTHEAST TODAY...LEAVING BEHIND A VERY MOIST AIRMASS...A UPPER LEVEL WEAK SHORTWAVE AND A UNSTABLE ATMOSPHERE. ONGOING CONVECTION OVER THE CENTRAL COUNTIES IS FOLLOWING THE NORTHEAST PATH. RAINFALL AMOUNTS EQUAL TO OR EXCEEDING FLASH FLOOD GUIDANCE. DUE TO THE ONGOING CONVECTION... WILL LET THE FLASH FLOOD WATCH GO ALL DAY AND DIE ON ITS OWN AT 6PM. MODEL GUIDANCE HAVE DIFFERING SOLUTION WITH MONDAY/TUESDAY PERIOD. WITH AN UNSTABLE ATMOSPHERE AT THE SURFACE AND THE SHORTWAVE ALOFT... GUIDANCE KEEP SOUTH CENTRAL TEXAS IN AN AREA OF WETNESS. THE 30-40 POPS FOR THIS AFTERNOON AND TONIGHT LOOK GOOD. MONDAY INTO TUESDAY IS THE PERIOD OF CONFUSION FOR THE MODELS. LOOKING AT A DRIER MID WEEK AND LATER PERIODS. AFTERNOON CONVECTION IS A REAL POSSIBLE THREAT FOR ALL WEEK...SAY 20-30 POPS. THE 4AM FORECAST PACKAGE HAS MOST OF THIS HANDLED OK. WILL BE ADJUSTING POPS AND WEATHER GROUPS ON THE GRIDS FOR THIS AFTERNOON AND MONDAY. OTHERWISE THE FORECAST WILL REMAIN THE SAME FOR THE LATER PERIODS IN THE WEEK FOR THIS UPDATE. && .PREV DISCUSSION... UPPER LOW WILL EJECT NORTHEAST INTO AR TODAY LEAVING BEHIND A WEAKER CYCLONIC SHEAR AXIS TO FOCUS CONVECTION. SATELLITE WATER VAPOR IMAGERY INDICATES LOWER PRECIPITABLE WATER VALUES SHOULD BE SEEN IN THE UPPER AIR DATA OVER SOUTH TX THIS MORNING AS MID TO UPPER LEVEL WINDS ARE BECOMING MORE WESTERLY. THE MOISTURE CONTENT SHOULD STILL SUPPORT CONVECTION AND THE CYCLONIC SHEAR AXIS SHOULD CONCENTRATE HIGHER POPS AND LOCALLY HEAVY RAINS OVER THE EASTERN HALF OF TX THROUGH THIS AFTERNOON. GIVEN THE SATURATED CONDITIONS, AND THE POSSIBILITY OF TRAINING STORMS, WILL EXTEND THE FLASH FLOOD WATCH THROUGH THIS AFTERNOON FOR THE EASTERN HALF OF SC TX. AFTERWARDS, WILL FINALLY SHAKE FREE OF THE LOCALLY HEAVY RAINFALL WORDING AS THE EXPECTED STORM TRENDS BEYOND TODAY WILL NOT SUPPORT SIGNIFICANT FLOOD THREATS. THE NEXT FEATURE TO KEEP AN EYE ON IS A POSSIBLE NW FLOW EVENT FOR TONIGHT. IT IS TOO DIFFICULT TO PINPOINT THE FAVORED TRACK OF ANY NW FLOW MCS ACTIVITY AT THIS TIME, BUT FEEL THERE SHOULD BE SOME IN THE VICINITY THUS WILL KEEP 30 PERCENT POPS IN FOR TONIGHT AND ANOTHER 30 FOR TOMORROW TO ACCOUNT FOR TROPICAL AIR INTERACTING WITH HEATING AND LEFTOVER BOUNDARIES. MODELS CONTINUE TO FEED TROPICAL AIR FROM THE PACIFIC THROUGH THURSDAY, SO WILL EXPECT CONTINUED DIURNAL THUNDERSTORMS DURING THE MIDDLE OF THE WEEK. AFTER FRIDAY AFTERNOON, FEEL THAT THE MODEL TRENDS ARE CONSISTENT ENOUGH TO SUPPORT REMOVING POPS FROM WESTERN COUNTIES WITH PERHAPS SOME SEABREEZE ACTIVITY SNEAKING INTO EASTERN COUNTIES BENATH THE BUILDING UPPER RIDGE OVER THE SOUTHERN PLAINS. TEMPS SHOULD BE MILD THE NEXT FEW DAYS AND THEN TREND TOWARD MORE TYPICAL SUMMERTIME VALUES LATE IN THE WEEK. && .EWX WATCHES/WARNINGS/ADVISORIES...FLASH FLOOD WATCH IN EFFECT FOR EASTERN HALF OF THE SOUTH CENTRAL TEXAS UNTIL 6 PM TODAY. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 516 AM CDT SUN JUN 27 2004 TXZ171>173-183>194-202>209-217>225-228-281015- 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- 516 AM CDT SUN JUN 27 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... AN UPPER LEVEL TROUGH OF LOW PRESSURE AND MOIST AIR FROM THE GULF OF MEXICO WILL RESULT IN SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE EASTERN SECTIONS OF SOUTH CENTRAL TEXAS TODAY. LOCALLY HEAVY RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN A COUPLE HOURS. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 6 PM CDT FOR THE EASTERN HALF OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The Austin/San Antonio radar (KEWX), 42 km away, was scanning. The volume nearest the first event began at 16:10 UTC.
11 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Caldwell County received a general 1 inch rainfall, with up to 3 inches between Luling and Lockhart. Many of the county roads were impassible due to flooding, including parts of US183 between Luling and Lockhart.
Widespread 1 inch rain totals were received across the northwest part of Comal County and the western part of Hays County, with as much as 3 inches in the area from Spring Branch to Wimberley to Driftwood and Henly. Flash flooding was indicated across this area from just before noon into the afternoon.
Widespread 1 inch rain totals were received across the northwest part of Comal County and the western part of Hays County, with as much as 3 inches in the area from Spring Branch to Wimberley to Driftwood and Henly. Flash flooding was indicated across this area from just before noon into the afternoon.
An inch of rain fell across the city of Austin, with as much as 4 inches in the central part of the city. The Austin Police Department reported low water crossings flooded through much of the afternoon.
General 1 to 2 inch rainfall over Gillespie County, with up to 6 inch amounts between Fredericksburg and Willow City, produced flash flooding from the late afternoon into the evening.
A general 1 inch rain Blanco County south of US290, with as much as 4 inches around the town of Blanco, caused flash flooding through the afternoon and early evening.
Between 2 and 3 inches of rain fell in the mid afternoon between Flatonia and Schulenburg. Maximum totals were reported to be near 4 inches between the two towns. Flash flooding closed several roads, including FM209 and SH95.
Between 1 and 2 inches of rain fell across Kendall County in the late afternoon. Reports indicated that up to 4 inches had fallen in the southeast part of the county. Flash flooding was reported across most county rural roads.
1 to 2 inch rain totals over eastern Bandera County, with up to 3 inches in the Pipe Creek area, produced flash flooding along FM1283, as well as many other east county roads.
Evening and late night showers and thunderstorms produced a general 1 to 2 inch rainfall over Medina County, as well as the western half of Bexar County. Highest totals were 6 inches between D'Hanis, Helotes and Leon Springs. Widespread flash flooding was indicated in the US90 corridor between D'Hanis and the western edge of San Antonio.
Evening and late night showers and thunderstorms produced a general 1 to 2 inch rainfall over Medina County, as well as the western half of Bexar County. Highest totals were 6 inches between D'Hanis, Helotes and Leon Springs. Widespread flash flooding was indicated in the from where US90 crosses the western edge of San Antonio northward to Helotes and Leon Springs.
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, June 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: 5409506, 5409507, 5409508, 5409509, 5409510, 5409511, 5409577, 5409578, 5409579, 5409580, 5409581, 5409582.