Authorities say more than 20 girls are still unaccounted for at Camp Mystic in Kerr County, Texas, where the Guadalupe River rose more than 20 feet in less than two hours during torrential rains that triggered flash flooding in parts of the state.

Twenty-seven girls are still missing in Texas after a storm unleashed nearly a foot (0.3 meters) of rain on Friday and sent floodwaters gushing out of the Guadalupe River through the hilly region known for its century-old summer camps.