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.

Flash Flood in BEXAR, TEXAS
From 08-JUN-10 21:58:00 to 08-JUN-10 21:58:00 (CST-6)
Location: LONGHORN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A thunderstorm produced heavy rain which caused flooding and closed Oak Glen Drive and Cave Lane in San Antonio.

Flash Flood in ATASCOSA, TEXAS
From 08-JUN-10 22:05:00 to 08-JUN-10 22:05:00 (CST-6)
Location: VERDI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

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.

Flash Flood in WILSON, TEXAS
From 09-JUN-10 01:00:00 to 09-JUN-10 01:00:00 (CST-6)
Location: CALAVERAS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorms produced heavy rain which caused flooding and the evacuation of several homes near Calaveras.

Flash Flood in BEXAR, TEXAS
From 09-JUN-10 01:15:00 to 09-JUN-10 01:15:00 (CST-6)
Location: LOSOYA
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain which collapsed an earthen dam near the intersection of Campbellton and Hardy Roads. Several homes were evacuated due  to flooding.

Flash Flood in TRAVIS, TEXAS
From 09-JUN-10 03:34:00 to 09-JUN-10 03:34:00 (CST-6)
Location: FISKVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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.

Flash Flood in HAYS, TEXAS
From 09-JUN-10 03:40:00 to 09-JUN-10 03:40:00 (CST-6)
Location: KYLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms produced heavy rain which caused flooding and closed several streets in Kyle.

Flash Flood in WILLIAMSON, TEXAS
From 09-JUN-10 05:10:00 to 09-JUN-10 05:10:00 (CST-6)
Location: WEIR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms produced heavy rain which caused flooding and closed County Road 100.

Flash Flood in HAYS, TEXAS
From 09-JUN-10 04:30:00 to 09-JUN-10 04:30:00 (CST-6)
Location: WIMBERLEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

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.

Flash Flood in COMAL, TEXAS
From 09-JUN-10 06:30:00 to 09-JUN-10 06:30:00 (CST-6)
Location: COMAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Thunderstorms produced heavy rain which caused one foot of water to flow across Covers Cove in the Northcliffe Scenic Hills subdivision in Schertz.

Flash Flood in COMAL, TEXAS
From 09-JUN-10 06:34:00 to 09-JUN-10 06:34:00 (CST-6)
Location: DITTLINGER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

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.

Flash Flood in COMAL, TEXAS
From 09-JUN-10 06:50:00 to 09-JUN-10 06:50:00 (CST-6)
Location: NEW BRAUNFELS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorms produced heavy rain which caused flooding  and the evacuation of the RV park along the Guadalupe River at I-35.

Thunderstorm Wind in GUADALUPE, TEXAS
From 09-JUN-10 07:15:00 to 09-JUN-10 07:15:00 (CST-6)
Location: CLEAR SPG
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Flash Flood in BASTROP, TEXAS
From 09-JUN-10 07:30:00 to 09-JUN-10 07:30:00 (CST-6)
Location: PHELAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms produced heavy rain which caused flooding and washed out the 400 block of Sayers Road.

Lightning in TRAVIS, TEXAS
From 09-JUN-10 03:54:00 to 09-JUN-10 03:54:00 (CST-6)
Location: AUSTIN
Property damage: 600.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorms produced lightning which started a fire and destroyed the Barr Mansion on Sprinkle Road near the intersection with Springdale Road in Austin.

Flash Flood in COMAL, TEXAS
From 09-JUN-10 06:55:00 to 09-JUN-10 07:55:00 (CST-6)
Location: NEW BRAUNFELS
Flood cause: Heavy Rain
Property damage: 10.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Flood in GUADALUPE, TEXAS
From 09-JUN-10 07:00:00 to 09-JUN-10 14:00:00 (CST-6)
Location: CLEAR SPG
Flood cause: Heavy Rain
Property damage: 10.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Flash Flood in COMAL, TEXAS
From 09-JUN-10 03:15:00 to 09-JUN-10 03:15:00 (CST-6)
Location: GRUENE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms produced heavy rain which caused flooding and closed Hueco Springs Loop, Krueger Canyon and Herbelin Roads.