Thunderstorms which formed in the afternoon over portions of San Antonio produced locally heavy rainfall and urban flooding.
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 which formed in the afternoon over portions of San Antonio produced locally heavy rainfall and urban flooding.
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 Sep 10, 1:55 PM CST, 2 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 255 PM CDT THU SEP 10 2015 .SHORT TERM (TONIGHT THROUGH FRIDAY NIGHT)... OUTFLOWS FROM PREVIOUS CONVECTION WEDNESDAY INTO WEDNESDAY NIGHT LEFT TWO MOISTURE CONVERGENCE AREAS FOR CONVECTIVE FOCUS TODAY...ONE OVER THE COASTAL PRAIRIES AND THE OTHER EXTENDING FROM THE EAGLE PASS AREA TO THE NORTHERN HILL COUNTRY. A RELATIVE VOID BETWEEN THESE TWO AREAS IS SLIGHTLY LESS MOISTURE AND WIND CONVERGENCE GENERALLY FROM SAN ANTONIO...SWWD TO NEAR LRD. MODEL RUN-TO-RUN TRENDS CONTINUE TO SHIFT HIGHER POP EMPHASIS SWD WITH TIME...KEEPING THE BEST CHANCE OF RAIN OVER THE NEXT 36 HOURS OVER OUR FAR SERN COUNTIES. SPOTTY 1-2 INCHES OF RAIN COULD FALL BY FRIDAY NIGHT MAINLY SOUTHEAST OF A LINE FROM CAMPBELLTON TO GIDDINGS. HEAVY DOWNPOURS SHOULD BE MUCH MORE ISOLATED NW OF THIS LINE...AND THE SLOW STORM MOTION AND SHORT-LIVED TRENDS WOULD SUGGEST THAT A FEW AREAS WILL FAIL TO SEE ANY RAIN AT ALL. THE RAPID REFRESH MODEL RUNS CONTINUE TO SIGNAL HIGHER POPULATION REGIONS OF AUSTIN AND SAN ANTONIO RECEIVING THE HIGHEST COVERAGE OF RAIN IN THE LATE AFTERNOON HOURS...THEN DECREASING TO ISOLATED COVERAGE AGAIN IN THE EARLY EVENING. WHILE THE UPSTREAM MERIDIONAL FLOW ALOFT PROMOTES ADDITIONAL INSTABILITY AND A FEW NOCTURNAL STORMS TONIGHT AND FRIDAY NIGHT...MODEL DATA SUGGEST DRIER POCKETS OF MID-LEVEL AIR THAT COULD LEAD TO SOME PARTIAL CLEARING AND A SLIGHT COOLING TREND ON OVERNIGHT LOWS PRIOR TO THE ARRIVAL OF THE EARLY SATURDAY COLD FRONT. && .LONG TERM (SATURDAY THROUGH THURSDAY)... THE UPPER LEVEL TROUGHING PATTERN CONTINUES TO SHARPEN FOR THIS WEEKEND. THE COLD FRONT IS SET TO ENTER INTO NORTHERN PARTS OF THE FORECAST AREA EARLY SATURDAY MORNING...WITH ONE LAST ROUND OF INSTABILITY POSSIBLY GENERATING CONVECTION NEAR AND JUST BEHIND THE FRONT. THE MORE DAMPENED QPF NUMBERS OF THE ECM/GFS ARE FAVORED WITH LIGHTER QPF AMOUNTS OVER THE SHARPER NAM QPF AS THE NORTH WINDS SHOULD INCREASE THROUGH A DEEP LAYER AND MOVE THE LAST ROUND OF CONVECTION THROUGH MORE QUICKLY. WEEKEND TEMPERATURES CONTINUE TO HIGHLIGHT A NICE FALL WEEKEND AS DEW POINTS PLUMMET THROUGH A DEEP LAYER. THE UPPER TROUGH IS PROGRESSIVE BY SATURDAY NIGHT...SO LIGHT SOUTHERLY RETURN FLOW IS EXPECTED TO BEGIN OVER WESTERN COUNTIES ALREADY BY SUNDAY MORNING. MUCH OF THE HILL COUNTRY AND CENTRAL TX SHOULD SEE DECOUPLED WINDS AND MIN TEMPERATURES AS LOW AS THE MID 50S. LOW AMOUNTS OF ATMOSPHERIC MOISTURE SUNDAY INTO MONDAY SHOULD PROVIDE HIGH DIURNAL RANGES THAT SOFTEN UP BY TUESDAY WITH THE GRADUAL INCREASE IN SOUTHERLY FLOW. THE ECMWF CONTINUES TO DEVELOP TROPICAL ACTIVITY OVER THE WESTERN GULF...BUT THIS FEATURE HAS BECOME EVEN LESS LIKELY TO IMPACT TX OTHER THAT TO PROVIDE A GOOD SOURCE REGION FOR HIGHER PWAT VALUES. THE RUN-TO-RUN TRENDS OF BOTH THE GFS AND ECM FAVOR A FLAT E-W ORIENTED UPPER RIDGE OVER SOUTH TX BY MID-WEEK. POPS THUS WERE KEPT ON THE LOW SIDE DESPITE A GOOD AMOUNT OF MOISTURE EXPECTED TO SURGE INTO THE COASTAL PRAIRIES WEDNESDAY AND THURSDAY. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 73 90 69 87 63 / 30 30 30 20 - AUSTIN BERGSTROM INTL AIRPORT 72 89 70 86 58 / 30 30 30 20 - NEW BRAUNFELS MUNI AIRPORT 73 90 70 88 61 / 30 40 30 20 - BURNET MUNI AIRPORT 72 91 66 84 58 / 20 30 30 20 - DEL RIO INTL AIRPORT 76 92 71 90 68 / 30 30 40 20 - GEORGETOWN MUNI AIRPORT 73 90 67 85 58 / 20 30 30 20 - HONDO MUNI AIRPORT 73 89 71 89 61 / 30 30 30 20 - SAN MARCOS MUNI AIRPORT 73 89 70 86 60 / 30 40 30 20 - LA GRANGE - FAYETTE REGIONAL 74 89 71 87 61 / 40 50 30 20 - SAN ANTONIO INTL AIRPORT 74 90 71 88 63 / 30 40 30 20 - STINSON MUNI AIRPORT 74 91 72 89 64 / 40 50 30 20 - && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && MESOSCALE/AVIATION...OAKS SYNOPTIC/GRIDS...24 PUBLIC SERVICE/DATA COLLECTION...33
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 516 AM CDT THU SEP 10 2015 TXZ171>173-183>194-202>209-217>225-228-111030- 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- 516 AM CDT THU SEP 10 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS COULD PRODUCE LOCALLY HEAVY RAINFALL WITH TOTALS UP TO THREE INCHES POSSIBLE. HEAVY RAIN COULD CAUSE MINOR FLOODING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THUNDERSTORMS COULD PRODUCE LOCALLY HEAVY RAINFALL FRIDAY. RAINFALL TOTALS UP TO THREE INCHES ARE POSSIBLE. HEAVY RAIN COULD CAUSE MINOR FLOODING. HEAVY RAIN IS MOST LIKELY ALONG AND SOUTH OF HIGHWAY 90. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
456 PM CDT THU SEP 10 2015
TXZ205-102245-
BEXAR TX-
456 PM CDT THU SEP 10 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BEXAR COUNTY UNTIL
545 PM CDT...
AT 454 PM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS
STRETCHING FROM NEAR HOLLYWOOD PARK TO NEAR LEON VALLEY...MOVING
SOUTH AT 15 MPH.
WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE... SAN ANTONIO...LEON VALLEY...KIRBY...
HELOTES...ALAMO HEIGHTS...WINDCREST...TERRELL HILLS...HOLLYWOOD
PARK...SHAVANO PARK...OLMOS PARK...CHINA GROVE...SEA WORLD...
TIMBERWOOD PARK...THE DOMINION...CROSS MOUNTAIN...CONVERSE AND
CASTLE HILLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
MINOR FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 2946 9879 2974 9855 2970 9838 2967 9838
2965 9834 2962 9834 2961 9832 2937 9831
TIME...MOT...LOC 2154Z 359DEG 14KT 2961 9844
RUNYENThe Austin/San Antonio radar (KEWX), 54 km away, was scanning. The volume nearest the first event began at 21:58 UTC.
2 heavy rain, 1 thunderstorm wind. Local standard time, as filed.
San Antonio resident reported strong thunderstorm winds uprooted two trees and destroyed a small shed on Trudell Street.
Four homeless were swept downstream in Martinez Creek as they were gathering their belongings in a heavy rain. One of the persons, a 48 year old male, drowned and was later recovered from the creek the next day.
Three homeless men were staying under a culvert on San Pedro. During brief heavy rains, two of the three men were able to swim out, but the third man was discovered drown near the 300 block of Barbara.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heavy Rain, Bexar | 2015-09-10 | 48 | Male | Outside/Open Areas | Direct |
| Heavy Rain, Bexar | 2015-09-10 | 50 | Male | Outside/Open Areas | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2015Every state in 2015This day in weather historyWarnings in Texas, September 2015
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: 595087, 595085, 595086.