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TEXAS FLOOD DEATHS NOW AT 109, WITH DOZENS STILL MISSING Most of the flooding, while predicted up to 12 hours in advance, and at least 3 hours in advance, occurred mostly between 3AM and 5 AM. When the people hit were all asleep.
The flooding at Camp Mystic went from nothing to about 26 feet high in about 45 minutes.
26 feet is higher than a 3-story building.