The following events were reported: Flash Flood, Flood, Thunderstorm Wind. These occurred near station USW00012921, approximately 35.8539 km away, between 2010-06-08 21:58:00 and 2010-06-09 14:00:00. The flood was caused by Heavy Rain. The events resulted in 0 injuries and 1 fatalities. The events caused property damage valued at 20150000.0 and crop damage of 0.0. Episode Narrative: 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. An upper level area of low pressure combined with deep boundary layer moisture to produce a slow moving mesoscale convective system. Event Narrative: 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 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. 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. 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. Thunderstorms produced heavy rain which caused flooding and closed Hueco Springs Loop, Krueger Canyon and Herbelin Roads.