A stagnant, split upper level pattern allowed a series of short wave troughs to move through South Central Texas. These short waves combined with deep low level moisture to cause slow moving thunderstorms.
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 stagnant, split upper level pattern allowed a series of short wave troughs to move through South Central Texas. These short waves combined with deep low level moisture to cause slow moving thunderstorms. These storms produced heavy rain which caused flash flooding and river flooding. The flooding around Hunt in Kerr County resulted in several swift water rescues and one fatality.
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 Apr 15, 6:00 AM CST, 4 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 AM CDT THU APR 15 2010 .DISCUSSION... SEE AVIATION SECTION BELOW. && .AVIATION... MVFR CONDITIONS AT ALL TERMINALS THIS MORNING WITH SHOWER ACTIVITY AT THE SAN ANTONIO AND DEL RIO TERMINALS. SHOWER ACTIVITY WILL SPREAD THROUGHOUT THE DAY TO ALL TERMINALS. THUNDERSTORMS ARE NOT ANTICIPATED AT THE TERMINALS UNTIL AFTER NOON AS INSTABILITY INCREASES AND THE UPPER LEVEL TROUGH APPROACHES. CEILINGS WILL BRIEFLY LIFT TO VFR EARLY IN THE EVENING THEN RETURN TO IFR TOWARDS 12Z. && .PREV DISCUSSION... /ISSUED 400 AM CDT THU APR 15 2010/ DISCUSSION... MCS IN MEXICO ACROSS FROM MAVERICK COUNTY IS SPREADING MODERATE RAIN ACROSS OUR WESTERN COUNTIES THIS MORNING. THE NAM SEEMS TO HAVE A BETTER HANDLE ON THIS FEATURE AND BRINGS NORTH- NORTHEASTWARD ACROSS EDWARDS COUNTY LATER THIS MORNING. THEN EXPECT MORE WIDESPREAD RAIN THROUGH THE DAY TODAY. MODEL SOUNDINGS ARE SHOWING PW AROUND 1.5 INCHES ACROSS THE CWA TODAY. SO...HAVE INCLUDED A MENTION OF LOCALLY HEAVY RAIN. HEAVIEST RAIN WILL LIKELY BE OUT WEST ALONG THE TRACK OF THE MCS. THE REST OF THE FORECAST LOOK SIMILAR TO WHAT WE HAVE BEEN SHOWING OVER THE PAST COUPLE OF DAYS. A SERIES OF SHORT WAVE TROUGHS WILL MOVE THROUGH THE STAGNANT UPPER AIR PATTERN WITH POPS ALMOST EVERY PERIOD RANGING FROM SLIGHT TO CHANCE CATEGORY. HOWEVER...AS THE LAST COUPLE OF DAYS HAVE SHOWN SHOWERS WILL MAINLY BE LIGHT AND WIDELY SCATTERED. THERE WILL LIKELY BE SOME THUNDERSTORMS MIXED IN DURING THE DAYTIME HOURS. WITH ALL THE CLOUDINESS...HIGH TEMPS WILL REMAIN MODERATE AND LOWS WILL BE ON THE WARM SIDE. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 74 60 73 58 75 / 80 30 30 20 30 AUSTIN BERGSTROM INTL AIRPORT 74 59 72 56 74 / 80 30 30 20 30 NEW BRAUNFELS MUNI AIRPORT 74 60 73 58 75 / 90 30 50 20 30 BURNET MUNI AIRPORT 71 59 72 57 74 / 90 30 30 20 30 DEL RIO INTL AIRPORT 73 63 72 62 74 / 90 50 30 30 30 GEORGETOWN MUNI AIRPORT 73 59 73 58 75 / 80 30 20 20 30 HONDO MUNI AIRPORT 74 62 74 58 76 / 100 50 40 30 40 SAN MARCOS MUNI AIRPORT 74 60 72 58 74 / 90 30 40 20 30 LA GRANGE - FAYETTE REGIONAL 76 61 74 60 76 / 70 30 30 20 40 SAN ANTONIO INTL AIRPORT 73 61 72 59 74 / 100 40 50 20 30 STINSON MUNI AIRPORT 74 62 74 60 76 / 100 40 50 30 30 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && 05/22
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 730 AM CDT THU APR 15 2010 TXZ171>173-183>194-202>209-217>225-228-161230- 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- 730 AM CDT THU APR 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY RAIN ACROSS SOUTH CENTRAL TEXAS THROUGHOUT THE DAY. OVERNIGHT HEAVY RAIN WILL BE FOCUSED TO THE RIO GRANDE PLAIN AND EDWARDS PLATEAU. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... ORGANIZED THUNDERSTORMS FRIDAY AND INTO THE WEEKEND WILL HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Laughlin AFB radar (KDFX), 89 km away, was scanning. The volume nearest the first event began at 16:15 UTC.
20 flash flood. Local standard time, as filed.
Slow moving thunderstorms produced heavy rain and flooding which closed FM 1407 and FM 1557 in Carrizo Springs.
A slow moving thunderstorm produced heavy rain and flooding which closed FM 471, County Road 482, and County Road 584 in and near La Coste.
A slow moving thunderstorm produced heavy rain and flooding which closed Hwy 470 between Tarpley and Hwy 187.
A slow moving thunderstorm produced heavy rain and flooding which closed Hwy 187 south of Vanderpool.
A slow moving thunderstorm produced heavy rain and flooding which closed FM 1340 along the upper Guadalupe River west of Hunt.
Flood waters swept a truck off FM 1340 resulting in a fatality. A local resident of Hunt was headed home from a local school board meeting when he tried to cross a low water crossing. By the time rescuers responded he was apparently swept downstream and drowned. His body was discovered several days later about a mile downstream at another low water crossing.
A slow moving thunderstorm produced heavy rain and flooding which washed a vehicle off Hwy 39 southwest of Hunt. A family was rescued from their van which was washed off the road.
Slow moving thunderstorms produced heavy rain which flooded intersections in Del Rio stranding several cars.
Thunderstorms produced heavy rain which flooded intersections in Del Rio with several motorists stranded in their cars.
Slow moving thunderstorms produced heavy rain and flooding closing some rural roads around Pearsall.
Thunderstorms produced heavy rain which caused flooding north and east of Luling. On FM 1322, Plum Creek Bridge and the intersection with McNeil Road were closed and County Road 129 was completely flooded.
Thunderstorms produced heavy rain which caused flooding and closed the intersection of County Roads 158 and 159.
Heavy rainfall near the San Antonio International Airport caused street flooding on Country Club Lane.
Heavy rainfall caused flooding at the intersection of Loop 1604 and Stone Oak Parkway.
Heavy rainfall caused local street flooding in the Stone Oak section of San Antonio.
Thunderstorms produced heavy rain which caused flooding stranding cars along Ingram and Marbach Roads.
Heavy rain caused flooding which closed FM 536 from Highway 281 to IH37.
Heavy rain caused flooding which closed the intersection of County Roads 2615 and 371.
Heavy rain caused flooding which closed part of Texas Highway 581.
Heavy rain caused flooding which closed several roads in Atascosa county. FM 2146 was closed between FM 476 and Highway 173. FM 1470 was closed near Galvan Creek. FM 1333 was closed where it crossed the Atascosa River. FM 536 was closed between US 281 and IH 37. FM 140 was closed between US 281A and Texas Highway 16.
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, Kerr | 2010-04-15 | 73 | 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 historyWarnings in Texas, April 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: 216204, 216205, 216206, 216208, 216209, 225879, 216214, 216218, 218061, 216219, 218062, 218063, 218064, 218065, 218066, 218068, 218070, 218072, 218076, 218085.