An upper level area of low pressure combined with deep boundary layer moisture to produce a slow moving mesoscale convective system. This MCS produced excessive rainfall from Atascosa to Comal counties.
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.
An upper level area of low pressure combined with deep boundary layer moisture to produce a slow moving mesoscale convective system. This MCS produced excessive rainfall from Atascosa to Comal counties. CoCoRAHs observers reported 7.81 inches of rain near Pleasanton and 11.30 inches near New Braunfels. Heavy rain began shortly after midnight over portions of southern Comal County. Heavy rains in excess of 11+ inches fell in the area centered between the Guadalupe River and Highway 46 between 2 am and 8 am. This runoff produced a massive flash flood along the Guadalupe primarily downstream of the 3rd river crossing. Hardest hit areas were the campsites along River Road and areas directly along the riverbank in Gruene, New Braunfels, Lake Dunlap, Lake McQueeny, and Seguin. Total losses are estimated into the 10s of millions of dollars. One death occurred with several swift water rescues. Dozens of campers, vehicles, and boats were lost in the resulting flood along the Guadalupe.
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 Jun 8, 8:19 PM CST, 1 hour 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 919 PM CDT TUE JUN 8 2010 .UPDATE... WITH THE LOW ALOFT FROM NORTHEAST TEXAS TO SOUTH CENTRAL TEXAS THIS EVENING AND FORECAST TO BE MOVING VERY SLOWLY TO THE NORTHEAST THROUGH WEDNESDAY NIGHT AND THURSDAY...THE PATTERN CONTINUES TO COME TOGETHER IN A WAY THAT BODES WELL FOR AN EARLY TO MID JUNE RAIN EVENT ACROSS SOUTH CENTRAL TEXAS TONIGHT THROUGH WEDNESDAY AND POSSIBLY EXTENDING TO WEDNESDAY EVENING. AS A RESULT WITH THE EXISTING FLASH FLOOD WATCH THAT WAS TO EXPIRE AT 1 AM TONIGHT...IT SEEMS LOGICAL TO EXTEND THIS FLASH FLOOD WATCH UNTIL 6 PM WEDNESDAY...GIVEN THE GOOD CHANCE OF RAIN EXPECTED AND POTENTIAL THAT OCCASIONAL HEAVY RAIN PROCESSES COULD DEVELOP THROUGH WEDNESDAY. SHOWED A FLASH FLOOD WATCH ALONG AND EAST OF A LINE FROM ATASCOSA COUNTY TO KENDALL COUNTY TO BURNET COUNTY. SHOWED SLIGHTLY HIGHER RAIN CHANCES THROUGH WEDNESDAY EVENING AND CONTINUED TREND OF DECREASING RAIN CHANCES FOR THURSDAY. CONTINUED TREND OF LITTLE OR NO RAIN FOR FRIDAY AND SATURDAY...AND THEN SHOWED SLIGHT CHANCES OF RAIN FOR THE EARLY PART OF NEXT WEEK. MODERATED AFTERNOON HIGHS SLIGHTLY TO ACCOUNT FOR CLOUDS WEDNESDAY AND SOIL MOISTURE LIMITING HIGHS THURSDAY AND FRIDAY...FOLLOWED BY CONTINUE WEAK HEIGHT FIELD ALOFT ON THE WEEKEND THRU EARLY NEXT WEEK...WITH MODERATE S TO SE WINDS. && .PREV DISCUSSION... /ISSUED 816 PM CDT TUE JUN 8 2010/ AVIATION... CURRENTLY THE UPPER LOW OVER TEXAS IS PUSHING RAIN AROUND THE I-35 CORRIDOR FROM SOUTH TO NORTH-NORTHEAST. THIS WILL CAUSE MVFR CONDITIONS WITH CIGS REMAINING LOW AND ALSO LOWER VISIBILITIES. EXPECT THESE CONDITIONS TO LAST THROUGHOUT THE EVENING. KDRT WILL REMAIN VFR AND CAN EXPECT MVFR CONDITIONS BY 10Z THEN BY 18Z COME BACK TO VFR. PREV DISCUSSION... /ISSUED 352 PM CDT TUE JUN 8 2010/ DISCUSSION... AN UPPER LEVEL LOW WILL CONTINUE TO DOMINATE THE WEATHER OVER SOUTH CENTRAL TEXAS. DEEP BOUNDARY LAYER MOISTURE WILL COMBINE WITH THIS LOW TO BRING A CHANCE FOR HEAVY RAIN TONIGHT AND TOMORROW. MOST OF THE HEAVY RAIN POTENTIAL WILL BE SOUTH AND EAST OF I35 AND I37. THERE IS A FLASH FLOOD WATCH IN EFFECT FOR THIS REGION UNTIL 06Z TONIGHT. THIS MAY NEED TO BE EXTENDED LATER THIS EVENING...BUT GIVEN THE LACK OF RAINFALL TODAY WILL LEAVE IT AS IT IS FOR NOW. UPPER LOW WILL MOVE SLOWLY AWAY FROM THE AREA THURSDAY AND CHANCE FOR RAIN WILL LINGER. ONCE THIS FEATURE DEPARTS...DRY WEATHER WILL RETURN WITH WARMER TEMPERATURES. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 75 86 75 92 78 / 50 60 40 30 10 AUSTIN BERGSTROM INTL AIRPORT 75 86 76 92 77 / 50 60 40 30 10 NEW BRAUNFELS MUNI AIRPORT 75 87 76 92 77 / 60 60 30 20 - BURNET MUNI AIRPORT 74 85 74 91 76 / 50 60 40 30 10 DEL RIO INTL AIRPORT 76 93 78 97 79 / 20 20 10 - - GEORGETOWN MUNI AIRPORT 74 84 74 90 76 / 50 60 40 40 20 HONDO MUNI AIRPORT 75 90 76 93 77 / 50 40 20 10 - SAN MARCOS MUNI AIRPORT 76 87 75 92 76 / 60 60 40 20 10 LA GRANGE - FAYETTE REGIONAL 76 86 77 90 78 / 50 60 40 40 20 SAN ANTONIO INTL AIRPORT 76 89 77 92 79 / 60 50 30 20 - STINSON MUNI AIRPORT 76 89 77 92 78 / 60 50 30 20 - && .EWX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH WEDNESDAY AFTERNOON FOR THE FOLLOWING COUNTIES: ATASCOSA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL... COMAL...DE WITT...FAYETTE...GONZALES...GUADALUPE...HAYS...KARNES... KENDALL...LAVACA...LEE...TRAVIS...WILLIAMSON...WILSON. && 08/19/JB/05/22
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX ISSUED BY NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 1049 AM CDT TUE JUN 8 2010 TXZ173-191>194-205>209-220>225-091600- WILLIAMSON-HAYS-TRAVIS-BASTROP-LEE-BEXAR-COMAL-GUADALUPE-CALDWELL- FAYETTE-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA- 1049 AM CDT TUE JUN 8 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP LATER THIS AFTERNOON AND EVENING. THE GREATEST THREAT OF LOCALLY HEAVY RAINFALL WILL OCCUR THIS AFTERNOON THROUGH TONIGHT. STORM TOTALS OF 1 TO 2 INCHES ARE EXPECTED...WITH ISOLATED AMOUNTS OF 3 TO 5 INCHES POSSIBLE. THIS WILL LEAD TO POSSIBLE ISOLATED FLASH FLOODING. THEREFORE...A FLASH FLOOD WATCH HAS BEEN ISSUED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... THE UPPER LEVEL LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE SLOWLY NORTHEAST ACROSS SOUTH CENTRAL TEXAS THROUGH WEDNESDAY. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. TXZ171-172-183>190-202>204-217>219-228-091600- LLANO-BURNET-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-GILLESPIE- KENDALL-BLANCO-KINNEY-UVALDE-MEDINA-MAVERICK-ZAVALA-FRIO-DIMMIT- 1049 AM CDT TUE JUN 8 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS LATER THIS AFTERNOON AND TONIGHT. HOWEVER...NO ORGANIZED SEVERE WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... THE UPPER LEVEL LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE SLOWLY NORTHEAST ACROSS SOUTH CENTRAL TEXAS THROUGH WEDNESDAY. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
943 PM CDT TUE JUN 08 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0935 PM HEAVY RAIN 7 ENE PLEASANTON 29.00N 98.38W
06/08/2010 U0.00 INCH ATASCOSA TX LAW ENFORCEMENT
HWY 97 EAST OF INTERSTATE 37 CLOSED FOR HIGH WATER.
&&
EVENT NUMBER EWX1000377
JPBThe Austin/San Antonio radar (KEWX), 46 km away, was scanning. The volume nearest the first event began at 03:59 UTC.
14 flash flood, 1 lightning, 1 flood, 1 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced heavy rain which caused flooding and closed Oak Glen Drive and Cave Lane in San Antonio.
Thunderstorms produced heavy rain which caused flooding and closed County Road 536 from I-37 to the Wilson County line, FM 1784 north of Verde, and several other roads in the northeast corner of the county.
Thunderstorms produced heavy rain which caused flooding and the evacuation of several homes near Calaveras.
Thunderstorms produced heavy rain which collapsed an earthen dam near the intersection of Campbellton and Hardy Roads. Several homes were evacuated due to flooding.
Thunderstorms produced heavy rain which caused flooding and closed Hueco Springs Loop, Krueger Canyon and Herbelin Roads.
Thunderstorms produced heavy rain which caused flooding and closed three low water crossings on Spicewood Springs Road. The water was two feet deep in some places over the road.
Thunderstorms produced heavy rain which caused flooding and closed several streets in Kyle.
Thunderstorms produced lightning which started a fire and destroyed the Barr Mansion on Sprinkle Road near the intersection with Springdale Road in Austin.
Thunderstorms produced heavy rain which caused flooding and closed several roads in the county including Bell Springs Road, Wayside Drive at CR 179, FM 1492 at the Blanco River, and Little Arkansas Road at CR 174.
Thunderstorms produced heavy rain which caused flooding and closed County Road 100.
Thunderstorms produced heavy rain which caused one foot of water to flow across Covers Cove in the Northcliffe Scenic Hills subdivision in Schertz.
Thunderstorms produced heavy rain of four inches in six hours. This caused flooding and closed the low water crossings on FM 1863. The staff gauge on the Dry Comal Creek was at five feet.
Thunderstorms produced heavy rain which caused flooding and the evacuation of the RV park along the Guadalupe River at I-35.
A storm survey along the Guadalupe River from River Road down into the city of New Braunfels showed devastation along the banks of the river. The river rose some 20+ feet in less than 2 hours sweeping campers, cars, trailers, tubes, and other debris down the river toward New Braunfels and Seguin. Campsites downstream of the 3rd River Road crossing where demolished and swept clean due to the power of water. The campsites along the stretch of River Road near Camp Hueco Springs were especially hit hard as Elm creek flooded and brought tremendous water into the Guadalupe. A death occurred at this location as a man was swept downstream. Other campers were rescued down in New Braunfels after being swept miles downstream. Tubing businesses along the Guadalupe suffered major losses along with homes from Gruene down into Seguin. Thirty vehicles and 14 RVs were removed from the River in Comal County. One hundred twenty-one homes and businesses suffered damage. Damage estimate does not include other insured losses.
A flood wave went down the Guadalupe River and affect homes along the river from New Braunfels down to Seguin. Property damage including flooded homes, trailers, vehicles, and boats, was seen along the banks of the river including areas around Lake Dunlap and Lake McQueeney. A total of 231 homes were damaged in Guadalupe County along the Guadalupe River. No damage estimate was available.
Straight line thunderstorm winds from a small microburst caused extensive tree damage to an area near Lake Dunlap and Clear Springs. Hardest hit areas were between Zip Road and Potthast Drive near the Guadalupe River bend. Large trees were broken and toppled. Many trees fell on homes and cars in the neighborhood. A roof was blown off a mobile home along Highway 46 in Clear Springs.
Thunderstorms produced heavy rain which caused flooding and washed out the 400 block of Sayers Road.
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, Comal | 2010-06-09 | 65 | Male | Camping | 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, June 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: 239052, 239053, 239055, 239057, 239059, 239066, 239067, 240888, 239070, 239071, 239072, 239073, 239074, 245139, 245149, 239075, 239076.