EF1 tornado in Williamson County, Texas

A NWS storm survey team found an EF-1 tornado initially touched down near County Road 201 just west of County Road 200. The tornado traveled to the north-northeast through the Indian Oaks and Carriage Oaks subdivisions before crossing County Road 200 and lifting near East Bear Creek Rd. Damage was primarily to large oak trees, but about 7 to 10 homes suffered damage mainly to roofs. The most substantial damage was a complete loss of a chimney. Also, a barn lost part of its roof. Peak winds were estimated at 100 mph.

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.