Flash Flood in Medina County, Texas

Thunderstorms produced heavy rain that caused flash flooding with water rescues in D'Hanis and Yancy. There were also a number of roads closed. An 18 year old girl died when her vehicle was swept away on FM 2200 near Devine. She was returning from her prom and was within two miles of her home.

An upper level shortwave trough moved around the longwave low over the Four Corners region. This upper distubance interacted with a surface boundary moving northward as a warm front from South Texas into a very moist airmass. This combination led to thunderstorms that produced heavy rain and isolated severe weather. A historic flash flood occurred on the Blanco River late Saturday night into Sunday. Hundreds of homes were destroyed along the river from the City of Blanco down into Wimberley and San Marcos. The flood wave continued downstream for days affecting residents and homes along the San Marcos and Guadalupe Rivers. Early estimates show damages in excess of 100 million dollars. Several people lost their lives due to flash flooding. A large tornado outbreak occurred this Saturday night producing numerous small brief tornadoes.