Thunderstorms continued to develop beneath a persistent upper level low, producing heavy rain and flash flooding, as well as a tornado, on the morning of July 15.
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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 continued to develop beneath a persistent upper level low, producing heavy rain and flash flooding, as well as a tornado, on the morning of July 15.
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 14, 10:33 PM CST, 2 hours 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1133 PM CDT SAT JUL 14 2007 .AVIATION... 5 THSD TO 10 THSD SCT OCNLLY BKN WITH ISOLATED SHRA AND TSRA ALONG AND EAST OF A KAQO TO NEAR KSAT TO NEAR KPEZ LINE THRU 09Z. CIGS FORMING AROUND 2 THSD TO 3 THSD BKN AFTER 09Z WITH ISOLATED SHRA BECOMING 3 THSD TO 5 THSD SCT TO BKN AFTER 15Z. WDLY SCT SHRA AND TSRA WILL FORM AGAIN AROUND AND AFTER 17Z. && .PREV DISCUSSION... /ISSUED 814 PM CDT SAT JUL 14 2007/ DISCUSSION... CONVECTIVE ACTIVITY HAS BEGUN TO WANE ACROSS THE RIO GRANDE PLAINS. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG THE ESCARPMENT AND EASTERN HALF OF THE CWA THROUGH THE EVENING HOURS. IN ADDITION, RAPID COOLING BEHIND THE STORMS HAS ALLOWED TEMPS OUT WEST TO PLUMMET. HAVE TWEAKED MIN TEMPS DOWN A FEW DEGREES ACROSS THE RIO GRANDE PLAINS TO ACCOUNT FOR THIS. HAVE ALSO ADJUSTED NEAR-TERM POPS, DEWPOINT TEMPS AND SKY GRIDS TO REFLECT CURRENT TRENDS. OTHERWISE, PREVIOUS FORECAST IS ON TRACK AND NO OTHER ADJUSTMENTS ARE NECESSARY. PREV DISCUSSION... /ISSUED 628 PM CDT SAT JUL 14 2007/ AVIATION... 5 THSD TO 10 THSD SCT WITH SCT TO BKN CLOUDS ABOVE 10 THSD FT IS FORECAST THRU 06Z WITH WDLY SCT TSRA WEST OF A KJCT TO KCOT LINE. CONDITIONS ARE EXPECTED TO BECOME SCATTERED CLOUDS ABOVE 10 THSD FT AFT 06Z TO 4 THSD TO 6 THSD SCT WITH SCT TO BKN CLOUDS ABOVE 10 THSD FT AFTER 16Z. WIDELY SCT TSRA IS EXPECTED TO DEVELOP AFTER 19Z. PREV DISCUSSION... /ISSUED 403 PM CDT SAT JUL 14 2007/ DISCUSSION... THE FOCUS FOR RAINFALL IS SLOWLY SHIFTING SOUTHWARD LATE THIS AFTERNOON. SOME LIGHT TRAINING IS OCCURRING WHICH HAS PROMPTED A FEW FLOOD ADVISORIES, AND A FORECAST FOR ENHANCED RAIN CHANCES ALONG AND SOUTH OF THE BALCONES ESCARPMENT FOR THIS EVENING. EXPECT MOST OF THE ACTIVITY TO WEAKEN AFTER SUNSET, BUT A FEW ELEVATED CELLS COULD OCCUR IN THE UNSTABLE AIR ALOFT ACROSS ALL OF SC TX TONIGHT THROUGH MONDAY. A SLIGHTLY HIGHER CHANCE OF RAIN WILL EXIST THROUGH THIS PERIOD OVER THE COASTAL PLAINS, RESULTING FROM THE UPPER TROUGH AXIS STALLING OVER SE TX AND LA. MODEL CONSENSUS SHOWS THIS TROUGH AXIS SHIFTING BACK TO THE WEST AND MOVING ACROSS SOUTH TX TUESDAY THROUGH FRIDAY TO ENHANCE RAIN CHANCES. THE THREAT FOR HEAVY RAINS COULD BE ENHANCED DURING THIS PERIOD SINCE THE MOIST LAYER SHOULD BECOME DEEPER MODELS KEEP THE HIGHER RAIN TOTALS OVER OUR SOUTHERN COUNTIES, BUT THE LOOSE DEFINITION OF THE AXIS COULD MEAN A CHANGE FOR THE WORSE IF TRENDS CONTINUE TO REDUCE THE SPEED OF THE WESTWARD MOTION OF THE UPPER TROUGH. FOR NOW, WILL CONTINUE TO FOLLOW THE GFS LOOSELY, WITH SLIGHT DOWNWARD ADJUSTMENTS OF THE HIGHER POPS. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 71 93 71 94 72 / 20 20 20 20 20 AUSTIN BERGSTROM INTL AIRPORT 69 94 67 93 69 / 20 20 20 20 20 DEL RIO INTL AIRPORT 70 98 74 99 75 / 10 - - 10 - SAN ANTONIO INTL AIRPORT 74 93 72 93 72 / 30 20 20 20 20 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && 25/08
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 453 AM CDT SAT JUL 14 2007 TXZ171>173-183>194-202>209-217>225-228-151000- 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- 453 AM CDT SAT JUL 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... LOCALLY HEAVY RAINFALL IS POSSIBLE OVER THE EASTERN PORTIONS OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS. A FEW OF THE STORMS COULD PRODUCE STRONG WINDS AND HAIL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... MULTIPLE RAIN EVENTS THROUGH FRIDAY WILL RESULT IN LOCALLY HEAVY RAINS SUNDAY THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Austin/San Antonio radar (KEWX), 40 km away, was scanning. The volume nearest the first event began at 06:59 UTC.
10 flash flood, 1 thunderstorm wind, 1 tornado. Local standard time, as filed.
Between 2 and 4 inches of rain fell on the saturated soils between Lockhart and McMahan early on the morning of July 15, closing FM20 and FM713.
Thunderstorms produced 2 to 3 inches of rain near midnight over southern Comal County, closing FM311 and FM1863 due to high water.
Thunderstorms produced from 2 to 4 inches of rain over west and central Guadalupe County, closing FM78, FM467, and FM477 due to flash flooding.
Scattered thunderstorms produced a general 3 to 4 inch rainfall in eastern Fayette County, which resulted in the closing of SH159, SH237, FM1291, FM955, and FM2714.
A short, curved line of thunderstorms, approaching from the northwest, intersected near 1:25 am CST with a second line of thunderstorms building westward from Seguin and Gonzales. For the next 20 minutes the storms appeared to strengthen near this intersection and spread southwestward. By 1:50 am CST the storms at this intersection began moving toward the southeast and by 1:55 am CST all storms were weakening rapidly. The greatest damage was located along Knollcreek Drive on the north side from Jung Road Classen Road. On the south end the damage was located parallel to and about one quarter mile northwest of Nacogdoches from its intersection with Bell Drive to its intersection with O Connor Road. The most typical kind of damage over the area consisted of broken tree limbs and branches that had been tossed toward the southeast, indicating wind gusts of 45 to 60 mph. However, in a number of locations large trees were snapped off or knocked over. A few trees showed signs of weak root systems, but most of the trees were healthy. This level of damage indicated wind gusts of 80 to 100 mph.
In surveying damage in northeast San Antonio, staff found indications of a tornado at two locations. It is thought that the severe thunderstorm winds struck the area near 1:25 am CST and the tornado struck after the severe thunderstorm winds. The tornado damage was similar to the other damage in the area, consisting of fences blown down and trees snapped off or blown over, except that the debris was tossed in all different directions. It touched down near 1:30 am CST close to the intersection of Knollbluff and Flowing Spring and moved southeast for approximately 1000 feet before lifting and moving over a utility plant. At one point along Flowing Spring it fired pieces from the top of a fence toward the south into the second story of a home, and shortly afterward, it threw other pieces into a roof of a different home back to the northwest. The tornado touched down again near the intersection of Saddle Ridge and Cedar Moss, a little over a half-mile to the southeast of its lift point. Here it knocked over two large trees, tossing one to the east and one to the south. Residents at this location reported high winds, followed by hail, and then a calm period before their ears suddenly popped and they heard a sound like a freight train. The tornado moved toward the southeast for approximately 300 feet then lifted and dissipated. A review of the damage indicated tornado winds of 80 to 100 mph at both locations, making it an EF-1 on the Enhanced Fujita Scale.
Thunderstorms produced from 2 to 4 inches of rain over northeast Gonzales County, closing FM1115 and FM1296 due to flash flooding.
Storms produced a general 2 to 4 inch rainfall between San Antonio and Universal City. At least 15 roads were closed in San Antonio with the northeast portion of Loop 1604 closed east of Lookout Road.
Thunderstorms over southern Gonzales, northern Lavaca and northern DeWitt Counties produced general 2 to 3 inch rain totals with up to 5 inches near Moulton. Flash flooding closed FM532 and SH95.
Thunderstorms over southern Gonzales, northern Lavaca and northern DeWitt Counties produced general 2 to 3 inch rain totals with up to 4 inches near Westhoff. FM240 and US87 were closed due to flash flooding.
Thunderstorms in eastern Medina County produced rain totals of 3 to 4 inches, causing flash flooding that closed FM1343 and SH173 closed.
Thunderstorms between over southern Gonzales, northern Lavaca and northern DeWitt Counties produced general 2 to 3 inch rain totals with up to 5 inches near Smiley. US97 and US87 were closed near Nixon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2007Every state in 2007This day in weather historyThe tornado archive for Texas, 2007Warnings 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: 49396, 49397, 49398, 49399, 49400, 49401, 49402, 49403, 49404, 49405, 49406, 49407.