From Grand Canyon, Ariz.: A flash flood event has resulted in people being unaccounted for. Crews have been working to assess damage and evacuate those in need. Rescuers have airlifted a significant number of people to safety, with more evacuations planned. The number of people missing has been revised downward after initial estimates.

Damage from the flood has impacted trails and utilities, with nearly all footbridges over a creek being destroyed.

Further information on the situation is available from the National Park Service, which has been providing updates on the rescue efforts and damage assessments.