Tropical storm Hermine made landfall near the Texas/Mexico border on the night of September 6. The storm moved northward through South Texas into South Central Texas.
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.
Tropical storm Hermine made landfall near the Texas/Mexico border on the night of September 6. The storm moved northward through South Texas into South Central Texas. Strong winds and flooding rain began in South Central Texas on September 7. On September 8 the winds subsided, but the flooding rain continued as the remnants of Hermine moved northward into Oklahoma. South Central Texas was hit very hard with widespread rains of 8-12 inches across much of the I-35 corridor from Austin down to San Antonio. Hardest hit area was north Austin, Round Rock, Cedar Park, and Georgetown. Sixteen inches of rain fell in Georgetown, with the Georgetown Co-op observer reporting 16.37 inches for the 2 day rain event. Williamson County reported 637 homes having been damaged by flood waters, with most having minor to major damage. No damage estimate from these residents are available. Damage estimates are near $8 million dollars for county infastructure including roads, bridges, public buildings and parks.
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 7, 5:24 AM CST, 2 hours 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 624 AM CDT TUE SEP 7 2010 .AVIATION... TROPICAL STORM HERMINE MOVING NNW ACROSS S CENTRAL TX TODAY AND TONIGHT WILL KEEP CONDITIONS VARIABLE MVFR-IFR IN WIDESPREAD SHRA/TSRA. CIGS AND VSBYS WILL OCCASIONALLY DIP TO LIFR. CONDITIONS AT KDRT WILL OCCASIONALLY BE VFR ON THE DRIER WEST SIDE OF HERMINE. WIND DIRECTION WILL VARY DEPENDING ON LOCATION OF HERMINE...HOWEVER SPEEDS OF 10-25 KNOTS WILL BE COMMON WITH GUSTS OF 35-45 KNOTS POSSIBLE IN THE NE QUADRANT OF HERMINE TODAY. && .PREV DISCUSSION... /ISSUED 541 AM CDT TUE SEP 7 2010/ DISCUSSION... APOLOGIES FOR LATE FORECAST DISCUSSION THIS MORNING...AS ROBUST FORWARD SPEED OF THE TROPICAL STORM WILL RESULT IN SOME TROPICAL STORM FORCE WINDS INTO THE SOUTHERN PART OF SOUTH CENTRAL TEXAS...PROMPTING A HASTY ISSUANCE OF AN HLS FOR THREE COUNTIES. A TORNADO WATCH WAS ALSO ADDED FOR SE COUNTIES...AND THE THREAT FOR ISOLATED TORNADOES WILL PROBABLY ADVANCE TOWARD THE I-35 COUNTIES BY MIDDAY. WITH A SLIGHTLY FASTER SPEED OF HERMINE FACTORED INTO THE FORECAST...SOME LOWERING OF HIGHEST STORM TOTALS WAS TAKEN DOWN TO 8-10 INCHES. THE CORE OF HERMINE WILL LIKELY PUSH OUT OF OUR CWA WITHIN A FEW HOURS OF MIDNIGHT TONIGHT. THUS SOME FURTHER LOWERING OF EXPECTED STORM TOTALS MAY BE CONSIDERED LATER THIS MORNING. DEEP TROPICAL MOISTURE WILL CONTINUE TO BE A CONCERN IN THE WAKE OF HERMINE DURING THE DAY WEDNESDAY...SO NO CHANGES TO THE FFA WINDOW IS BEING CONSIDERED AT THIS TIME. WIND ADVISORY IS IN GOOD SHAPE FOR NOW...BUT WILL PROBABLY BE TRIMMED OVER THE WESTERN COUNTIES LATER THIS MORNING. BY THURSDAY...HIGH HEAT INDICES WILL BECOME THE NEW CONCERN AS THE MOIST SOILS WILL BE BAKED UNDER A STRONG BUILDING UPPER RIDGE. THIS RIDGE IS EXPECTED TO BE CENTERED DIRECTLY OVER OR VERY CLOSE TO SOUTH CENTRAL TEXAS FOR THE NEXT SEVERAL DAYS...SO WILL TREND DRIER ON RAIN CHANCES BY THIS WEEKEND. SOME SLIGHT UNDERCUTTING OF MEDIUM RANGE HIGH TEMPS WAS MADE TO TEMPS DUE TO THE LARGE AMOUNTS OF MOISTURE EXPECTED TO BE IN THE SOILS. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 81 76 90 77 93 / 100 100 70 30 20 AUSTIN BERGSTROM INTL AIRPORT 82 75 90 77 93 / 100 100 70 30 20 NEW BRAUNFELS MUNI AIRPORT 82 75 90 77 93 / 100 90 70 30 20 BURNET MUNI AIRPORT 80 74 86 75 89 / 100 100 70 30 20 DEL RIO INTL AIRPORT 86 71 91 76 94 / 70 50 20 20 10 GEORGETOWN MUNI AIRPORT 82 75 88 76 92 / 100 100 70 30 20 HONDO MUNI AIRPORT 81 73 89 77 93 / 100 70 60 20 20 SAN MARCOS MUNI AIRPORT 83 75 90 76 93 / 100 90 70 30 20 LA GRANGE - FAYETTE REGIONAL 84 77 89 77 91 / 100 80 70 30 30 SAN ANTONIO INTL AIRPORT 81 76 88 78 92 / 100 80 70 30 20 STINSON MUNI AIRPORT 82 76 89 77 93 / 100 80 70 30 20 && .EWX WATCHES/WARNINGS/ADVISORIES... TROPICAL STORM WIND WARNING FROM 11 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING COUNTIES: ATASCOSA...FRIO...KARNES. FLASH FLOOD WATCH THROUGH WEDNESDAY MORNING FOR THE FOLLOWING COUNTIES: ATASCOSA...BASTROP...BEXAR...CALDWELL...COMAL...DE WITT... FAYETTE...FRIO...GONZALES...GUADALUPE...HAYS...KARNES...LAVACA... LEE...MEDINA...TRAVIS...WILLIAMSON...WILSON. WIND ADVISORY FROM 10 AM THIS MORNING TO MIDNIGHT CDT TONIGHT FOR THE FOLLOWING COUNTIES: ATASCOSA...BANDERA...BEXAR...BLANCO... CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS...FRIO...GILLESPIE... GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR...KINNEY... LAVACA...MAVERICK...MEDINA...REAL...UVALDE...WILSON...ZAVALA. FLASH FLOOD WATCH FROM 1 PM CDT THIS AFTERNOON THROUGH WEDNESDAY MORNING FOR THE FOLLOWING COUNTIES: BANDERA...BLANCO...BURNET... DIMMIT...EDWARDS...GILLESPIE...KENDALL...KERR...KINNEY...LLANO... MAVERICK...REAL...UVALDE...VAL VERDE...ZAVALA. && 18/01
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 525 AM CDT TUE SEP 7 2010 TXZ171>173-183>194-202>209-217>225-228-081030- 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- 525 AM CDT TUE SEP 7 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... TROPICAL STORM HERMINE MOVING NORTHWARD ACROSS SOUTH CENTRAL TEXAS TODAY AND TONIGHT WILL RESULT IN VERY HEAVY RAINFALL AND THE POTENTIAL FOR FLASH FLOODING AND RIVER FLOODING. ISOLATED TORNADOES ARE POSSIBLE MAINLY EAST OF I35 TODAY AND THIS EVENING. A TROPICAL STORM WIND WARNING IS IN EFFECT FOR FRIO...ATASCOSA...AND KARNES COUNTY FROM 11 AM UNTIL 4 PM TODAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... THE REMAINS OF HERMINE WILL CONTINUE TO MOVE NORTHWARD INTO WEST CENTRAL TEXAS WEDNESDAY MORNING WITH HEAVY RAINS AND FLOODING STILL POSSIBLE. RAIN CHANCES WILL DECREASE LATE WEDNESDAY INTO THURSDAY INTO THURSDAY. RIVER FLOODING WILL STILL BE POSSIBLE FROM RUNOFF FROM ANY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTERS ACTIVATION MAY BE NEEDED TODAY...TONIGHT...OR WEDNESDAY.
The Austin/San Antonio radar (KEWX), 38 km away, was scanning. The volume nearest the first event began at 13:25 UTC.
42 flash flood, 1 tornado, 1 funnel cloud. Local standard time, as filed.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Lookout Road at O'Connor Road and North Weidner Road at Schertz Road in San Antonio.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Posten Lane at Hoeke Lane in Austin.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed 17 roads in San Antonio.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed parts of County Road 1337 and Smithson Valley Road.
As tropical storm Hermine moved north, a tornado formed along highway 95 approximately one mile south of Moulton in Lavaca County. A portion of a roof was blown off an abandoned building and a tree was also uprooted on the property. The tornado moved north along the east side of Highway 95 and traveled through a corn field where the track was clearly visible. The tornado then lifted or weakened just south of Moulton after traveling 0.2 miles. Maximum wind speeds were estimated at 65 mph with a maximum width of 50 yards. This tornado was rated as an EF0 on the enhanced Fujita scale.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Old San Antonio Road in Fredericksburg with water and debris over the roadway.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed 34 roads in and around San Antonio.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed the 400 block of FM 474 in Boerne and Old Fredericksburg Road near the Gillespie County line.
A thunderstorm produced a funnel cloud moving north in the vicinity of FM 969 and Burleson Manor Road near Webberville.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several roads due to high water around Austin.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several streets near Round Rock.
Heavy rain from Tropical Storm Hermine produced flash flooding covering parts of West Shubert Street and Old San Antonio Road with water in Fredericksburg.
Heavy rain from Tropical Storm Hermine produced flash flooding which stranded two cars: one in Round Rock at the intersection of Wyoming Springs Drive and Cloud Peak Lane and the other in Cedar Park in the 1000 block of Great Oaks Drive.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several roads in and around Austin including Old Bee Cave Road, Joe Tanner Road, and David Moore Road. There was also water in two houses in the 2900 block of Rivercrest Drive.
Heavy rain from Tropical Storm Hermine produced flash flooding which caused Dry Comal Creek to rise two feet over the low water crossing.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Georgetown Airport Road at Indian Mound Road.
Heavy rain from Tropical Storm Hermine produced flash flooding resulting in the evacuation of approximately 25 people from their flooded homes in Florence. It also closed numerous roads around Brushy Creek including Brushy Creek Road at Brushy Bend Drive.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several roads across Seguin and western Guadalupe County.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed RM 150 northeast of Wimberley.
Heavy rain from Tropical Storm Hermine produced flash flooding resulting in one death as a woman was killed when her vehicle was swept off RM2222 into Bull Creek in West Austin sometime between Midnight and 1 AM CDT. She attempted to drive through a flooded low water crossing after passing a barricade, police cruiser, and contractor truck and where a rescue was ongoing. In addition there were multiple high water rescues in Austin, Cedar Park, and Jollyville. Flooding also closed North Lamar Boulevard between 9th and 12th Streets in Austin. Rainfall up to 10.11 inches was reported in Travis County.
Heavy rain from Tropical Storm Hermine produced flash flooding resulting in several homes being evacuated in Florence. Additional flooding was reported in Jollyville and Liberty Hill.
Heavy rain, up to 2.24 inches in two hours in Cibolo, from Tropical Storm Hermine produced flash flooding which closed several roads in Schertz and Cibolo.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed multiple roads near Devine.
Heavy rain from Tropical Storm Hermine produced flash flooding with water several feet deep on the campus of Southwestern University in Georgetown.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Link Road at Highway 46, several other low water crossings in and around McQueeney, and Youngsford at Creek Road in Marion.
Heavy rain from Tropical Storm Hermine produced flash flooding which resulted in several high water rescues and closed 40 roads in San Antonio.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed I-35 in both directions in Georgetown which caused one death. A man was found dead in a drainage field on September 14th. Police believe on September 8th at around 2am he was forced to stop his car because I-35 was closed with several feet of water over the highway. He pulled off on an exit ramp and discovered it was also flooded. Relatives said that he called them and said he couldn’t get home but was going to check the depth of the water. He got out of his vehicle and tried to walk through the flooded water to determine its depth and apparently was sucked down through a drainage culvert. The flooding also caused the evacuation of approximately 100 homes along Brushy Creek near Round Rock.
Heavy rain from Tropical Storm Hermine produced flash flooding which caused the evacuation of approximately 100 homes along Brushy Creek.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed 32 roads across the City of Austin and Travis County.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed 10 roads across the Comal County including FM 1863 at Dry Comal Creek.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Highway 29 near Georgetown.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed FM2538 near New Berlin.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed FM2536 near San Antonio.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed FM463, FM471, and FM462.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed FM473, FM1376, FM1320, FM962, Highway 46, County Road 1320.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several roads in and around Lake Hills, English Crossing, FM1283, FM37, FM462, and Highway 46.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed County Road 233 near Niederwald.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed most of the low water crossings in Marble Falls and Horseshoe Bay.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Post Road near San Marcos.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed several roads including FM2147 and FM2342.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Lime Creek Road south of Fisher Hollow near Cedar Park.
Heavy rain from Tropical Storm Hermine produced flash flooding which closed Bulverde Road from Jones Maltsberger Road to Redland Road and Sleepy Hollow Street at Sunburst Street.
Heavy rain from Tropical Storm Hermine produced flash flooding on Black Creek and Francisco Creek and in the cities of Devine and Natalia where multiple homes were flooded and there were water rescues on County Road 6714 and FM471. In addition the flooding closed FM463 and FM471.
Heavy rain from Tropical Storm Hermine produced flash flooding of Cibolo Creek along the Bexar Comal county border resulting in one death. A man was killed when his vehicle was swept off FM1863 at the low water crossing approximately one quarter mile east of Beck Road. After successfully driving through another flooded crossing a few moments earlier, he entered the flood waters and was swept away.
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 |
|---|---|---|---|---|---|
| Flash Flood, Travis | 2010-09-08 | 51 | Female | Vehicle/Towed Trailer | Direct |
| Flash Flood, Williamson | 2010-09-08 | 41 | Male | Outside/Open Areas | Direct |
| Flash Flood, Bexar | 2010-09-08 | 57 | Male | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2010Every state in 2010This day in weather historyThe tornado archive for Texas, 2010Warnings in Texas, September 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: 260910, 260913, 260914, 260916, 261049, 260919, 260921, 260923, 260924, 260925, 260926, 260927, 260929, 260934, 260936, 260939, 260940, 260942, 260945, 260955, 260956, 260957, 260958, 260959, 260960, 260961, 260962, 260963, 260964, 261015, 261016, 261017, 261018, 261019, 261020, 261021, 261023, 261024, 261040, 261041, and more.