Dallas ? Forecasters predicted more heavy thunderstorms in the Plains over the holiday weekend after two days of storms and flooding that left five people dead and one missing in central Texas.

Dozens of people were plucked from rising waters on Friday, and Gov. Rick Perry activated National Guard troops to be deployed in Waco, Austin and San Antonio for the weekend.

Near Fredericksburg, authorities were looking for a man whose sport utility vehicle was swept away during storms that have dumped about 8 inches of rain in the area since Thursday.

Lt. Jim Judd of the Gillespie County sheriff’s office said about 30 people spent Friday looking for Edgar Garcia, 22, who called his mother after he drove around a barricade blocking a swollen creek and got stuck.

Three people died in Killeen, police said. The bodies of two brothers, ages 5 and 6, were found early Friday in a submerged SUV. The boys were riding with their mother and two siblings Thursday when their vehicle was wiped off the road into a gully.