A cold front moved through the area causing isolated thunderstorms which produced heavy rain and flash flooding in Llano County.
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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 cold front moved through the area causing isolated thunderstorms which produced heavy rain and flash flooding in Llano 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 Sep 29, 2:11 AM CST, 3 hours 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 311 AM CDT TUE SEP 29 2009 .DISCUSSION...GULF MOISTURE WILL CONTINUE TO OVERRUN THE SHALLOW COOL AIRMASS TODAY AND WITH AFTERNOON HEATING..EXPECT CONTINUED DEVELOPMENT OF SHOWERS AND THUNDERSTORMS MAINLY OVER SOUTH CENTRAL AND EASTERN PORTIONS OF THE CWA. THE UPPER RIDGE WILL BUILD EAST TONIGHT OVER THE REGION AS SOUTHEAST FLOW RETURNS. SOME RESIDUAL CONVERGENT SHOWERS MAY OCCUR OVER OUR SOUTHEAST CWA TONIGHT. SOUTHEAST FLOW WILL CONTINUE WEDNESDAY AS A STRONG UPPER TROUGH APPROACHES THE INTERMOUNTAIN REGION. WIDESPREAD MORNING LOW CLOUDS WILL MIX OUT TO FAIR/PARTLY CLOUDY ACROSS THE WESTERN TWO-THIRDS OF THE REGION WITH MOSTLY CLOUDY OVER THE EASTERN THIRD. SOME CONVERGENT SHOWERS OR STORMS ARE POSSIBLE OVER THE EASTERN THIRD WEDNESDAY. ENHANCED WESTERLIES ALOFT THURSDAY WILL CAUSE DAYTIME READINGS TO RISE A FEW DEGREES ABOVE SEASONAL NORMS..WELL ABOVE ACROSS THE RIO GRANDE PLAINS. AS THE UPPER LOW EXITS THE PLAINS..A WEAK COLD FRONT WILL PUSH ITS WAY THROUGH THE AREA LATE THURSDAY NIGHT/EARLY FRIDAY. SCATTERED SHOWERS AND THUNDERSTORMS WILL LINE THE FRONT GENERALLY EAST OF THE THERMAL LOW OVER CENTRAL AND EASTERN PORTIONS OF THE CWA THURSDAY NIGHT. A DRIER WEAK RIDGE WILL BUILD SOUTHEAST ACROSS CENTRAL AND EAST TEXAS DURING THE DAY FRIDAY WITH RAINS ENDING FROM THE WEST. THEN..THE WEAK SURFACE RIDGE WILL OVERRUN WITH LOW LEVEL GULF MOISTURE..AND LIGHT RAIN OR SHOWERS FRIDAY NIGHT IN STRONG ZONAL FLOW ALOFT. WEAK DISTURBANCES WITHIN THE SOUTHERN BRANCH OF THE UPPER JET WILL PRODUCE MOSTLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS THIS WEEKEND WITH DAYTIME HIGHS CLOSE TO NORMAL TO SLIGHTLY ABOVE. AS ANOTHER UPPER TROUGH DIGS ALONG THE WEST COAST MONDAY..WINDS ALOFT WILL BACK INTO THE SOUTHWEST AND ANCHOR FOR AWHILE AS A LARGE RIDGE MAINTAINS ITSELF OVER THE GULF. THIS WILL RESULT IN ABOVE NORMAL TEMPERATURES IN A HUMID...TROPIC LIKE ENVIRONMENT FOR THE FIRST PART OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 85 69 88 74 92 / 30 10 10 - 10 AUSTIN BERGSTROM INTL AIRPORT 85 67 88 74 92 / 30 10 10 - 10 NEW BRAUNFELS MUNI AIRPORT 86 68 89 73 91 / 30 10 20 - 10 BURNET MUNI AIRPORT 84 67 87 72 87 / 20 - - - 20 DEL RIO INTL AIRPORT 90 73 93 74 96 / 10 - - - 10 GEORGETOWN MUNI AIRPORT 84 68 88 73 90 / 30 - 10 - 20 HONDO MUNI AIRPORT 88 71 89 71 93 / 30 - 10 - 10 SAN MARCOS MUNI AIRPORT 86 69 87 73 91 / 30 10 10 - 10 LA GRANGE - FAYETTE REGIONAL 83 69 88 73 90 / 40 20 20 10 10 SAN ANTONIO INTL AIRPORT 86 71 89 74 92 / 30 10 10 - 10 STINSON MUNI AIRPORT 88 72 89 74 92 / 40 10 10 - 10 && .EWX WATCHES/WARNINGS/ADVISORIES...NONE. && 02/06
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 538 AM CDT TUE SEP 29 2009 TXZ171>173-183>194-202>209-217>225-228-301045- 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- 538 AM CDT TUE SEP 29 2009 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...WEDNESDAY THROUGH MONDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Ft Hood radar (KGRK), 107 km away, was scanning. The volume nearest the first event began at 11:59 UTC.
1 flash flood. Local standard time, as filed.
Thunderstorms produced heavy rain which resulted in one foot of water over the roadway at the intersection of County Road 307 and Ranch Road 3404.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, September 2009
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: 194252.