Camp Mystic's executive director began evacuating campers approximately 45 minutes after the National Weather Service issued a "life-threatening flash flooding" alert.

The leader of Camp Mystic had been tracking the weather before the deadly Texas floods, but it is now unclear whether he saw an urgent warning from the National Weather Service that had triggered an emergency alert to phones in the area, a spokesman for camp’s operators said Wednesday.

The National Weather Service issued an urgent flood warning at 1:14 a.m. July 4th. Camp personnel did not start moving girls to safety for at least 46 minutes.