Camp staff went to bed following what seemed like routine flood warnings. Within hours, they were fighting for survival. “Chaos struck almost instantaneously.”

At least 87 people have died from flooding in Texas. The vast majority of the fatalities -- 75 -- were in Kerr County. Deaths have also been confirmed in Travis, Williamson, Burnet and Tom Green counties. Texas Sen. Ted Cruz said 10 girls and one counselor from Camp Mystic are still unaccounted for.

The Texas summer camp where children died in flooding is in an area meteorologists refer to as "Flash Flood Alley."