Thunderstorms associated with a persistent upper level low produced heavy rain and flash flooding on the morning of July 24.
Every event with a place to put it. 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 episode as NWS EWX wrote it up.
Thunderstorms associated with a persistent upper level low produced heavy rain and flash flooding on the morning of July 24.
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 23, 11:25 PM CST, 3 hours 35 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1225 AM CDT TUE JUL 24 2007 .AVIATION... MOST OF SHRA/TSRA DISSIPATING OR GONE. SOME ACTIVITY MOVE SOUTH OVERNIGHT...ESPECIALLY SOUTH OF I10. MAY ALSO SEE SHRA/TSRA DEVELOPMENT TOWARDS MORNING. KDRT COULD SEE SHRA/TSRA BETWEEN 07Z-09Z IF ACTIVITY HOLDS TOGETHER FROM THE NORTH. BEST CHANCES FOR SCATTERED TO NUMEROUS SHRA/TSRA WILL ONCE AGAIN DEVELOP TUE AFTER 18Z. WILL SEE VFR OR MVF THROUGH MOST OF THIS FCST PERIOD OUTSIDE OF SHRA/TSRA. IN LOCATIONS THAT EXPERIENCE SHRA/TSRA WILL SEE IFR CONDITIONS. LIGHT AND VARIABLE WINDS OVERNIGHT WILL BECOME E-SE NEAR 10 KTS BY 18Z. && .PREV DISCUSSION... /ISSUED 1027 PM CDT MON JUL 23 2007/ UPDATE... A QUICK UPDATE WAS SENT TO REFLECT THE SHIFT OF HIGHER POPS TO WESTERN AND SOUTHERN COUNTIES. THE THREAT OF REDEVELOPMENT FROM THE NORTH AND MORE OVERNIGHT FLOODING CONTINUES. PREV DISCUSSION... /ISSUED 848 PM CDT MON JUL 23 2007/ UPDATE... ONSET OF HEAVY RAIN HAS WARRANTED ANOTHER FFA FOR SOUTH CENTRAL TEXAS. ENERGY ALOFT CONTINES TO STREAM SOUTHWARD ACROSS THE SOUTHERN PLAINS INTO TEXAS. THUNDERSTORMS APPEAR TO BE AIDED BY ABUNDANT GROUND MOISTURE AS DEWPOINTS HAVE REBOUNDED RAPIDLY OVER THE PAST 36 HOURS. THUNDERSTORMS ARE SLOWLY WEAKENING OVER CENTRAL TEXAS WITH STRONGER ACTIVITY SHIFTING INTO WEST CENTRAL TEXAS. THUS HIGHER OVERNIGHT RAINFALL TOTALS SHOULD MIGRATE TO OUR WESTERN COUNTIES TOWARD DRT AS THIS ACTIVITY DRIFTS SOUTH. FLOOD STRICKEN AREAS NEAR AUS COULD STILL SEE UP TO AN INCH OF ADDITIONAL RAINFALL OVERNIGHT, WITH THE MORE UNSTABLE AREAS TO THE WEST STILL CAPABLE OF RECEIVING SPOTTY 5 INCH AMOUNTS. MODELS CONTINUE TO STREAM UNSTABLE AIR ALOFT INTO OUR AREA THROUGH TUESDAY, EVOLVING INTO ANOTHER WESTWARD MOVING UPPER LOW DRAGGING ACROSS SOUTH CENTRAL TEXAS BY WEDNESDAY. PREV DISCUSSION... /ISSUED 623 PM CDT MON JUL 23 2007/ AVIATION... SCATTERED SHRA/TSRA CURRENTLY MOVING S/SW ACROSS THE IH35 CORRIDOR. ADDITIONAL SHRA/TSRA DEVELOPING AREA WIDE IN MOIST AND UNSTABLE AIRMASS. EXPECT MOST OF THE RAINFALL TO END BY 02Z. WILL HAVE TO WATCH RAINFALL FURTHER NORTH TO SEE IF THIS WILL HOLD TOGETHER AND MOVE INTO THE AREA LATER TONIGHT. VFR OUTSIDE OF RAIN AREAS WITH IFR IN STRONGER TSRA. OVERNIGHT SHOULD SEE MVFR PREVAIL OUTSIDE OF RAIN AREAS. ON TUESDAY WILL ONCE AGAIN SEE SCATTERED TO NUMEROUS SHRA/TSRA AFTER 17Z. WINDS LIGHT AND VARIABLE OVERNIGHT AND THRU 18Z TUE THEN E-SE NEAR 10 KTS TUE AFTERNOON. VARIABLE AND GUSTY WINDS TO 30 KTS MAY BE SEEN WITH STRONGER TSRA. PREV DISCUSSION... /ISSUED 426 PM CDT MON JUL 23 2007/ UPDATE... A QUICK UPDATE TO THE AFTERNOON PACKAGE TO ACCOUNT FOR THE RAPID BLOW-UP OF THUNDERSTORMS OVER CENTRAL TX. SLOW CELL MOVEMENT WILL WARRANT MENTION OF LOCALLY HEAVY RAINFALL. AS MENTIONED IN THE PREVIOUS DISCUSSION, A SHIFT TOWARD ANOTHER HEAVY RAINFALL PATTERN IS UNDERWAY, AND WE MAY NEED TO START THINKING ABOUT ANOTHER FFA AS EARLY AS TONIGHT. PREV DISCUSSION... /ISSUED 321 PM CDT MON JUL 23 2007/ DISCUSSION... WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED TO DEVELOP ACROSS SOUTH CENTRAL TEXAS THIS AFTERNOON. THIS IS DUE TO A MOIST AIRMASS WITH PWS IN THE 1.6 TO 1.9 INCH RANGE AND SOLAR HEATING. EXPECT THESE TO CONTINUE WELL INTO TONIGHT AS AN UPPER LEVEL JET AND SHORT-WAVE CURRENTLY OVER THE CENTRAL PLAINS PLUNGE SOUTH INTO TEXAS TO PROVIDE LIFT AND DIFFLUENCE. COULD SEE SOME HEAVY DOWNPOURS, HOWEVER THEY WILL BE ISOLATED. BEYOND TONIGHT, MODELS IN VERY GOOD AGREEMENT AND CONFIDENCE HIGHER THAN YESTERDAY AS GFS HAS RETURNED TO ITS EARLIER SOLUTIONS. TUESDAY INTO WEDNESDAY, ANOTHER MID AND UPPER LEVEL LOW/TROUGH DEVELOPS OVER CENTRAL TEXAS AS ADDITIONAL SHORT-WAVE AND JET ENERGY DROPS SOUTH BETWEEN WESTERN STATES RIDGE, EASTERN STATES TROUGH, AND GULF OF MEXICO RIDGE. THE DRIER AIR WORKING INTO EASTERN AND SOUTHEASTERN TEXAS TODAY APPEARS TO HAVE STALLED ITS WESTERN PROGRESSION AS UPPER LEVEL ENERGY APPROACHES. DEVELOPMENT OF THE UPPER LOW WILL INCREASE UPPER DIFFLUENCE AND LIFT WHILE BOOSTING MOISTURE (PWS) BACK INTO THE 1.8 TO 2.2 INCH RANGE BY WEDNESDAY. HAVE INCREASED POPS TUESDAY INTO WEDNESDAY. THE INCREASED PWS WILL LEAD TO HEAVY RAINS BY WEDNESDAY AND HAVE INTRODUCED MENTION IN THE FORECAST. THE MID AND UPPER LOW WILL PERSIST ACROSS CENTRAL TEXAS THE REMAINDER OF THIS WEEK AND THEN SLOWLY MOVE WEST ACROSS THE RIO GRANDE TO JUST SOUTH OF THE BIG BEND THIS WEEKEND. STRONG UPPER DIFFLUENCE, LIFT AND TROPICAL MOISTURE ALL SUGGEST THREAT OF HEAVY RAINS WILL CONTINUE INTO THE WEEKEND. DUE TO SOILS REMAINING VERY SATURATED AND A FEW RIVERS AND STREAMS OUT OF BANKS OR IN FLOOD, ADDITIONAL OR RENEWED FLOODING WILL BE A THREAT. ALSO, AS IN THE LAST FEW EVENTS, THERE MAY BE SOME ISOLATED STORM WITH STRONG WIND GUSTS. THE UPPER LOW MOVES OFF TO THE WEST EARLY NEXT WEEK AS THE UPPER RIDGE BUILDS SOUTHEAST. THIS LOWERS POPS. ABOVE AVERAGE SOIL MOISTURE, CLOUDS, AND RAIN WILL KEEP DAYTIME TEMPERATURES WELL BELOW AVERAGE FOR LATE JULY. HAVE GENERALLY GONE WITH THE MAV/MEX GUIDANCE AS THEY SEEM REASONABLE. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 72 91 71 89 71 / 30 40 30 40 30 AUSTIN BERGSTROM INTL AIRPORT 69 92 67 89 71 / 40 40 30 40 30 DEL RIO INTL AIRPORT 73 92 73 89 73 / 30 40 30 40 40 SAN ANTONIO INTL AIRPORT 73 91 71 87 72 / 50 40 40 50 30 && .EWX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR THE FOLLOWING ZONES: 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. && 18/10
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1259 AM CDT TUE JUL 24 2007 TXZ171>173-183>194-202>209-217>225-228-241100- LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA- FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT- 1259 AM CDT TUE JUL 24 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TONIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT THROUGH TUESDAY MORNING... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED OVER THE AREA TONIGHT. SOME OF THE RAINFALL WILL BE LOCALLY HEAVY AND COULD PRODUCE RAPID FLASH FLOODING AND FLOODING ON AREA CREEKS...STREAMS AND RIVERS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH SUNDAY AS ANOTHER UPPER LEVEL TROUGH DEVELOPS ACROSS TEXAS. SHOWERS AND THUNDERSTORMS CAN BE EXPECTED AT ALMOST ANY TIME DURING THE DAY OR NIGHT. MANY OF THE STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL THAT WILL LEAD TO FLASH FLOODING DUE TO THE SATURATED SOILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1001 PM CDT MON JUL 23 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 PM FLASH FLOOD 8 NW AUSTIN 30.39N 97.85W
07/23/2007 TRAVIS TX EMERGENCY MNGR
LOW WATER CROSSING FLOODED AND ROADWAY CLOSED AT OLD
SPICEWOOD SPRINGS UNDER LOOP 360.
0630 PM FLASH FLOOD 10 N AUSTIN 30.45N 97.75W
07/23/2007 WILLIAMSON TX EMERGENCY MNGR
LOW WATER CROSSING FLOODED- ONE CAR STALLED IN HIGH WATER
AT WATER PARKS DR NEAR ADELPHI LANE/ONEAL LANE. OCCUPANTS
GOT OUR ON THEIR OWN. ROADWAY NOW CLOSED.
0645 PM HEAVY RAIN 10 NNW AUSTIN 30.44N 97.81W
07/23/2007 M1.33 INCH TRAVIS TX CO-OP OBSERVER
AUSTIN GREAT HILLS BETWEEN 415 AND 615 PM
0745 PM HEAVY RAIN 2 NE CEDAR PARK 30.54N 97.81W
07/23/2007 M2.36 INCH WILLIAMSON TX UTILITY COMPANY
UPPER BRUSHY CREEK FLOOD WARNING SYSTEM RAIN GAGE AT DAM
3 MEASURED FROM 330 PM TO 745 PM.
0745 PM HEAVY RAIN 1 ENE CEDAR PARK 30.52N 97.82W
07/23/2007 M2.64 INCH WILLIAMSON TX UTILITY COMPANY
UPPER BRUSHY CREEK FLOOD WARNING SYSTEM RAIN GAUGE AT DAM
4. MEASURED FROM 330 PM TO 745 PM.
&&
JPBThe Austin/San Antonio radar (KEWX), 102 km away, was scanning. The volume nearest the first event began at 09:01 UTC.
3 flash flood, 1 flood. Local standard time, as filed.
Scattered thunderstorms over Bexar, Atascosa, Karnes and Frio Counties produced a general 2 to 3 inch rain, with up to 4 inches from south of Lytle to just northwest of Charlotte. Brief flash flooding closed SH173 and FM2504.
Scattered thunderstorms over Bexar, Atascosa, Karnes and Frio Counties produced a general 2 to 3 inch rain, with flash flooding that closed FM99 and FM791.
Scattered thunderstorms over Bexar, Atascosa, Karnes and Frio Counties produced a general 2 to 3 inch rain, with up to 5 inches near Pearsall. FM140 was closed west of Pearsall due to flash flooding.
The San Antonio River at Elmendorf crested at 44.6 ft on 07/26 at 0030cst, where flood stage is 35 ft.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2007Every state in 2007This day in weather historyWarnings in Texas, July 2007
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: 49547, 49550, 49553, 49555.