A combination of low level moisture from the Gulf of Mexico and mid-level moisture from Tropical Storm Odile resulted in a very moist atmosphere over South Central Texas and pulse thunderstorms. Some of these storms produced heavy rain that led to flash flooding.
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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.
A combination of low level moisture from the Gulf of Mexico and mid-level moisture from Tropical Storm Odile resulted in a very moist atmosphere over South Central Texas and pulse thunderstorms. Some of these storms produced heavy rain that led to flash 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 16, 5:42 PM CST, 2 hours 56 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 642 PM CDT TUE SEP 16 2014 .AVIATION... /00Z TAF UPDATE/ CONVECTION JUST OUTSIDE THE ABIA VCNTY TO THE NORTH AND EAST WILL HAVE A CHANCE TO IMPACT THE TERMINAL OVER THE NEXT 1-2 HOURS. OVERALL...CONVECTIVE TRENDS ARE DECREASING...NO TEMPO GROUPS ARE MENTIONED FOR THE REMAINING TAF SITES OVER THE NEXT SEVERAL HOURS. A MORE UNIFORM SELY WIND IS EXPECTED IN THE LOWER LEVELS TONIGHT...AND THE CIRA SIMULATED LOW CLOUD PRODUCT SUGGESTS MORE CONTINUOUS MVFR TO POSSIBLY IFR CIGS TO DEVELOP OVER THE ESCARPMENT LATE TONIGHT. THERE WILL ALSO BE A GOOD CHANCE OF STREAMER SHOWERS AS INDICATED IN THE NAM AND HIGHER RESOLUTION FORECASTS. LATER IN THE DAY...MORE CONVECTION IS POSSIBLE WITH HIGH PWAT ENVIRONMENTS ALONG I-35 SUGGESTING A GOOD CHANCE OF STORMS FOR MUCH OF THE AFTERNOON AND EVENING. GIVEN AN OUTFLOW BOUNDARY DOMINATED ENVIRONMENT...WILL LEAVE THE CHANCES AS PROB30 GROUPS FROM 18Z TO 00Z THURSDAY. && .PREV DISCUSSION... /ISSUED 340 PM CDT TUE SEP 16 2014/ SHORT TERM (TONIGHT THROUGH WEDNESDAY NIGHT)... 16/12Z RAOB DATA ACROSS SOUTHERN TEXAS SHOWS PLENTY OF DEEP LAYER MOISTURE IN PLACE...WITH PRECIPITABLE WATER VALUES OF 2.5" AT KCRP AND 1.8" AT KDRT. THE LATEST WATER VAPOR LOOP ALSO SHOWS PLENTY OF MID AND UPPER LEVEL MOISTURE FROM /ODILE/ MOVING IN FROM THE WEST. OTHERWISE...THE LATEST RADAR IMAGERY SHOWS SCATTERED SHOWERS AND STORMS ONGOING ACROSS SOUTH CENTRAL TEXAS. CHANCES FOR RAINFALL WILL REMAIN HIGHEST ALONG THE COASTAL PLAINS WHERE DEEPER MOISTURE WILL BE FOUND. MOST ACTIVITY WILL BE TIED CLOSELY TO DIURNAL HEATING...SO A GENERAL DECREASING TREND IS ANTICIPATED DURING THE LATE EVENING AND OVERNIGHT HOURS. HOWEVER... GIVEN PLENTY OF MOISTURE IN PLACE...CAN/T COMPLETELY RULE OUT ADDITIONAL SHOWERS OVERNIGHT. ON WEDNESDAY...MOISTURE LEVELS SHOULD INCREASE SLIGHTLY ACROSS THE REGION. MEANWHILE...AN INCREASE IN MID-LEVEL SHORTWAVE ACTIVITY EMBEDDED IN THE NORTHWEST FLOW ALOFT IS ANTICIPATED. RAIN CHANCES WILL REMAIN FAVORED FOR AREAS GENERALLY NORTH OF I-10 AND THE COASTAL PLAINS. BASED ON THE LATEST ROUND OF MODEL GUIDANCE...WE HAVE INCREASED RAIN CHANCES ON WEDNESDAY AND WEDNESDAY NIGHT. LONG TERM (THURSDAY THROUGH TUESDAY)... ON THURSDAY...DEEP LAYER MOISTURE AND NORTHWEST FLOW ALOFT REMAIN INTACT ACROSS SOUTH CENTRAL TEXAS. RAIN CHANCES WILL AGAIN BE FAVORED FOR LOCATIONS GENERALLY NORTH OF I-10 AND THE COASTAL PLAINS. DESPITE THE RELATIVELY WEAK FLOW ALOFT...THE MODELS SUGGEST GOOD POTENTIAL FOR SEVERAL ROUNDS OF RAINFALL ON THURSDAY...ESPECIALLY ALONG AND NORTH OF HIGHWAY 71. LOCALLY HEAVY RAINFALL WILL CONTINUE TO REMAIN A CONCERN... ESPECIALLY FOR LOCATIONS THAT SEE MULTIPLE ROUNDS OF MODERATE TO HEAVY RAINFALL. WE/LL CONTINUE TO MENTION THIS IN THE LATEST HAZARDOUS WEATHER OUTLOOK. WE/LL CONTINUE TO MENTION RAIN CHANCES INTO FRIDAY AND BASED ON THE LATEST GUIDANCE...HAVE INCREASED POPS FOR AREAS EAST OF HIGHWAY 83. MOISTURE LEVELS WILL BE SLOW TO DECREASE THROUGH THE UPCOMING WEEKEND AS THE MID-LEVEL SUBTROPICAL RIDGE AXIS IS EXPECTED TO BE WEAKER THAN PREVIOUSLY ANTICIPATED. THIS WILL LEAD TO ADDITIONAL RAIN CHANCES FOR THE UPCOMING WEEKEND AND WE HAVE INCLUDED MAINLY 20-30% POPS FOR NOW. BY EARLY NEXT WEEK... A COLD FRONT IS EXPECTED TO MOVE INO THE REGION. THE LATEST ECMWF HAS BACKED OFF CONSIDERABLY ON THE STRENGTH OF THIS COLD FRONT AND IS NOW CLOSER TO THE GFS SOLUTION. FOR NOW...WE WILL NOT MAKE ANY SIGNIFICANT CHANGES TO THE FORECAST AND AWAIT FUTURE MODEL RUNS FOR SOME CONSISTENCY WITH THIS FRONT. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 74 89 74 88 71 / 20 50 60 60 30 AUSTIN BERGSTROM INTL AIRPORT 72 89 71 87 70 / 20 50 60 60 30 NEW BRAUNFELS MUNI AIRPORT 73 90 73 89 72 / 20 50 40 50 30 BURNET MUNI AIRPORT 72 87 72 87 70 / 20 50 60 60 30 DEL RIO INTL AIRPORT 75 89 74 89 76 / 20 30 20 20 20 GEORGETOWN MUNI AIRPORT 74 88 74 86 71 / 20 50 60 60 30 HONDO MUNI AIRPORT 73 90 73 91 73 / 20 40 30 30 20 SAN MARCOS MUNI AIRPORT 73 89 73 87 71 / 20 50 50 50 30 LA GRANGE - FAYETTE REGIONAL 74 89 74 87 73 / 30 60 60 60 20 SAN ANTONIO INTL AIRPORT 76 90 76 90 75 / 20 50 40 40 30 STINSON MUNI AIRPORT 75 91 75 91 75 / 20 40 40 40 30 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && MESOSCALE/AVIATION...18 SYNOPTIC/GRIDS...17 PUBLIC SERVICE/DATA COLLECTION...00
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 405 AM CDT TUE SEP 16 2014 TXZ171>173-183>194-202>209-217>225-228-170915- 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- 405 AM CDT TUE SEP 16 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT. A SURFACE TROUGH WILL MOVE INTO SOUTHERN TEXAS TODAY BRINGING AN INCREASINGLY MOIST AIRMASS. SHOWERS AND THUNDERSTORMS WILL BECOME MORE NUMEROUS AS THE DAY PROGRESSES INTO TONIGHT. LOCALLY HEAVY DOWNPOURS WITH HIGH RAIN RATES ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. A MOIST AIRMASS WILL PERSIST ACROSS SOUTH CENTRAL TEXAS FROM THE MIDDLE TO LATE THIS WEEK. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED DURING THE DAYTIME HOURS BECOMING MORE ISOLATED AT NIGHT WEDNESDAY THROUGH FRIDAY. LOCALLY HEAVY RAINFALL IS POSSIBLE AND MAY CAUSE ISOLATED MINOR FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 651 PM CDT TUE SEP 16 2014 TXZ173-192-170030- TRAVIS-WILLIAMSON- 651 PM CDT TUE SEP 16 2014 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WILLIAMSON AND NORTHERN TRAVIS COUNTIES UNTIL 730 PM CDT... AT 650 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR ROUND ROCK...MOVING WEST AT 5 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... WINDEMERE... ROUND ROCK... BRUSHY CREEK... JOLLYVILLE... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS. LAT...LON 3043 9777 3056 9777 3057 9760 3048 9755 TIME...MOT...LOC 2351Z 078DEG 4KT 3051 9765
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 819 PM CDT TUE SEP 16 2014 TXZ188-190-170200- BLANCO-GILLESPIE- 819 PM CDT TUE SEP 16 2014 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BLANCO AND EASTERN GILLESPIE COUNTIES UNTIL 900 PM CDT... AT 818 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR SANDY...OR 9 MILES SOUTHWEST OF ROUND MOUNTAIN...MOVING SOUTHWEST AT 10 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SANDY... ROCKY CREEK... HYE... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS. LAT...LON 3018 9858 3037 9868 3048 9842 3031 9833 TIME...MOT...LOC 0119Z 058DEG 7KT 3036 9848
The Austin/San Antonio radar (KEWX), 85 km away, was scanning. The volume nearest the first event began at 02:36 UTC.
1 flash flood. Local standard time, as filed.
Thunderstorms produced heavy rain that caused flash flooding sending a foot and a half of water over FM-1323 at Spring Creek.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2014Every state in 2014This day in weather historyWarnings in Texas, September 2014
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: 543589.