Everyone knew the heavy, wet storms that settle over Mohave Canyon could turn the dry wash into a deadly river, but no one did anything to fix it.
Finally, when the surge hit, it was too late.
At least 12 people were killed Monday by a wave of water so powerful that it ripped their white SUV in half. Most of the dead, authorities said, were children. A search continued late Tuesday for a 13th victim, also a child.
Two families, related by blood and not yet identified by police, were ending a sunny afternoon at Isaac Carling Memorial Park when a storm settled over the nearby red cliffs that edge the Grand Canyon.