A tropical upper-tropospheric trough (TUTT) low moved into central Texas and caused isolated severe thunderstorms over Bexar county.
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.
A tropical upper-tropospheric trough (TUTT) low moved into central Texas and caused isolated severe thunderstorms over Bexar county.
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 26, 5:36 PM CST, 1 hour 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 636 PM CDT MON JUL 26 2010 .AVIATION... UPPER LOW ACROSS NRN TX WILL CONTINUE TO DRAW DEEP GULF MOISTURE INTO SOUTH CENTRAL TEXAS THROUGH THE NEXT 24+ HRS. VFR CONDITIONS WILL PREVAIL THROUGH THIS EVENING. BRIEF SHRA/TSRA IS POSSIBLE AT I-35 TAF SITES BEFORE SUNSET...BUT TOO ISOLATED AND LOW PROBABILITY TO MENTION EXPLICITLY IN TAFS. MOST MODELS ARE INDICATING A BROKEN MVFR STRATUS DECK DEVELOPING AT I-35 TERMINALS AFTER 08Z...THEN SPREADING WEST TO KDRT AND LOWERING THROUGH THE NEAR-DAWN HOURS. HOWEVER...LOW CIGS COULD BE BETTER THAN ANTICIPATED IF MID-LEVEL DEVELOPMENT INTERFERES AS WAS THE CASE THIS MORNING. SHOULD LOW STRATUS DEVELOP OVERNIGHT...ANTICIPATING A RETURN TO VFR BY ABOUT 15Z. LIGHT SE-SLY SFC WINDS OVERNIGHT WILL BECOME MODERATE SE-SLY DURING THE AFTERNOON. && .PREV DISCUSSION... /ISSUED 313 PM CDT MON JUL 26 2010/ DISCUSSION... UPPER LOW IS MOVING THROUGH NORTHERN TX THIS AFTERNOON AS CAN BE SEEN ON WV SAT IMAGERY. THIS IS ALLOWING INCREASED GULF MOISTURE INTO SOUTH CENTRAL TX. SCT SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS EVENING PARTICULARLY OVER THE EASTERN HALF OF THE CWA. OVER THE NEXT COUPLE OF DAYS...THE UPPER LOW WILL CONTINUE ITS SLOW TREK TO THE WEST AND MODELS ARE IN GOOD AGREEMENT ON THIS. DEEP MOISTURE FLOW WILL KEEP HIGH POPS OVER EASTERN HALF AND CHANCE POPS OUT WEST. MODEL PW IS FORECAST OVER TWO INCHES FOR LARGE PART OF CWA THROUGH ABOUT WED. HAVE INCLUDED LOCALLY HEAVY RAINFALL FOR TUE AND WED AFTERNOONS. THIS MAY CAUSE SOME LOCAL FLOODING...BUT NOT EXPECTING ANY WIDESPREAD PROBLEMS. BY THU...SUBTROPICAL RIDGE WILL BUILD BACK OVER AREA. THIS WILL CUT OFF THE PRECIP AND START THE WARM UP. TEMPS WILL CLIMB SLOWLY THROUGH THE END OF THE WEEK AND INTO THE WEEKEND...BUT WILL STILL BE ONLY A FEW DEGREES ABOVE NORMAL. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 75 91 76 91 75 / 50 60 30 60 20 AUSTIN BERGSTROM INTL AIRPORT 73 91 74 89 73 / 50 60 30 60 20 NEW BRAUNFELS MUNI AIRPORT 74 91 74 90 74 / 50 60 30 60 20 BURNET MUNI AIRPORT 72 88 73 88 72 / 50 60 30 50 20 DEL RIO INTL AIRPORT 74 93 74 91 75 / 30 40 30 30 40 GEORGETOWN MUNI AIRPORT 74 90 75 90 74 / 50 60 30 60 20 HONDO MUNI AIRPORT 73 90 74 89 74 / 50 60 30 60 30 SAN MARCOS MUNI AIRPORT 74 90 73 89 73 / 50 60 30 60 20 LA GRANGE - FAYETTE REGIONAL 76 89 75 88 75 / 40 70 30 70 20 SAN ANTONIO INTL AIRPORT 76 91 75 88 75 / 50 60 30 60 30 STINSON MUNI AIRPORT 75 90 75 89 75 / 50 60 30 60 30 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && 02/25
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 507 AM CDT MON JUL 26 2010 TXZ171>173-183>194-202>209-217>225-228-271100- 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- 507 AM CDT MON JUL 26 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... DEEP TROPICAL MOISTURE WILL OVERSPREAD SOUTH CENTRAL TEXAS TUESDAY AND WEDNESDAY. SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL AMOUNTS OF 1 TO 3 INCHES...MAINLY DURING THE AFTERNOON AND EVENING HOURS AND MAY RESULT IN URBAN AND SMALL STREAM FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
450 PM CDT MON JUL 26 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0443 PM HEAVY RAIN 6 N AUSTIN 30.36N 97.72W
07/26/2010 M1.00 INCH TRAVIS TX COCORAHS
30 MINUTE RAINFALL NEAR THE NORTHCROSS SHOPPING
CENTER... NORTH OF ANDERSON LANE
&&
EVENT NUMBER EWX1000415
JPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
454 PM CDT MON JUL 26 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM HEAVY RAIN 7 WNW ZORN 29.80N 98.07W
07/26/2010 M1.00 INCH COMAL TX COCORAHS
30 MIN RAINFALL
&&
EVENT NUMBER EWX1000416
JPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
457 PM CDT MON JUL 26 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0212 PM HEAVY RAIN 2 SSW MARION 29.54N 98.16W
07/26/2010 M1.41 INCH GUADALUPE TX COCORAHS
55 MIN RAINFALL. STRONG STORM WITH NUMEROUS LIGHTNING
STRIKES.
&&
EVENT NUMBER EWX1000417
JPBSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 504 PM CDT MON JUL 26 2010 TXZ171-172-190-192-262300- BLANCO-BURNET-LLANO-TRAVIS- 504 PM CDT MON JUL 26 2010 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BLANCO... NORTHWESTERN TRAVIS...SOUTHEASTERN LLANO AND SOUTHWESTERN BURNET COUNTIES UNTIL 600 PM CDT... AT 500 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED STRONG THUNDERSTORMS NEAR SPICEWOOD...OR 11 MILES EAST OF ROUND MOUNTAIN...MOVING NORTH AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THE STRONGEST OF THESE THUNDERSTORMS ARE GENERALLY IN THE VICINITY OF HIGHWAY 71 BETWEEN BEE CAVE AND SUNRISE BEACH. HEAVY DOWNPOURS WILL SUDDENLY REDUCE VISIBILITIES TO LESS THAN ONE QUARTER OF A MILE. DRIVERS ARE ADVISED TO USE ADDITIONAL CAUTION DURING THE AFTERNOON COMMUTE. THESE HEAVY DOWNPOURS MAY CAUSE BRIEF MINOR FLOODING OF INTERSECTIONS AS WELL AS LOW-LYING AREAS AND OTHER URBANIZED AREAS PRONE TO RAINFALL RUNOFF. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... ROUND MOUNTAIN... MARBLE FALLS... SPICEWOOD... SMITHWICK... MEADOWLAKES... HORSESHOE BAY... GRANITE SHOALS... COTTONWOOD SHORES... SUNRISE BEACH VILLAGE... THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
522 PM CDT MON JUL 26 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM HEAVY RAIN 9 N AUSTIN 30.40N 97.74W
07/26/2010 M1.18 INCH TRAVIS TX BROADCAST MEDIA
1 HOUR RAINFALL 4-5 PM AT KEYE STUDIOS. FREQUENT
LIGHTNING STRIKES
&&
EVENT NUMBER EWX1000418
JPBSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 727 PM CDT MON JUL 26 2010 TXZ205>207-270130- BEXAR-COMAL-GUADALUPE- 727 PM CDT MON JUL 26 2010 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BEXAR...WESTERN GUADALUPE AND EXTREME SOUTHERN COMAL COUNTIES UNTIL 830 PM CDT... AT 718 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A LINE OF STRONG THUNDERSTORMS ACROSS CENTRAL BEXAR...SOUTHERN COMAL AND WESTERN GUADALUPE COUNTIES. THESE STORMS ARE SLOWLY MOVING NORTH AT ABOUT 5 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. BRIEF HIGH WINDS ARE POSSIBLE WITH DOWNBURSTS. THE STRONGEST STORMS ARE GENERALLY ALONG A LINE FROM SEGUIN TO SAN ANTONIO TO THE BEXAR AND MEDINA COUNTY LINE NEAR HIGHWAY 90. RAINFALL TOTALS THROUGH 8:30 PM MAY REACH AS HIGH AS 2 INCHES. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SAN ANTONIO... UNIVERSAL CITY... TERRELL HILLS... MARION... OLMOS PARK... ALAMO HEIGHTS... WINDCREST... SCHERTZ... CIBOLO... LIVE OAK... THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS.
The Austin/San Antonio radar (KEWX), 45 km away, was scanning. The volume nearest the first event began at 00:44 UTC.
2 thunderstorm wind, 2 flash flood. Local standard time, as filed.
A thunderstorm produced wind gusts estimated at 75 mph which knocked down large tree limbs.
A thunderstorm produced wind gusts estimated at 50 mph which knocked down some five inch diameter tree limbs.
Thunderstorms produced heavy rain which caused flash flooding and closed Perrin Beitel Road at Vicar Drive.
Thunderstorms produced heavy rain which caused flash flooding and closed George Road at Northwest Military Highway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2010Every state in 2010This day in weather historyWarnings in Texas, July 2010
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: 247735, 247736, 247738, 247740.