Flood watches have been issued by the National Weather Service until at least 7 p.m. CT July 6 in Hill Country and along the I-35 corridor. The Weather Prediction Center added that scattered thunderstorms are likely to drop "torrential downpours over sensitive soils across parts of the Texas Hill Country."

Relatives say John and Julia Burgess were camping in an RV along with their two young sons, Jack and James, when floodwaters roared through the Hill Country.