Firefighters are investigating a large house explosion in Tucson's Rita Ranch neighborhood. TUCSON, Ariz. — Firefighters in Tucson are investigating a large house explosion that occurred before 1 p.m.

The Dragon Fire, which has destroyed over 70 structures near the Grand Canyon, continues to grow in size, reaching over 9,200 acres.

Monsoon rain falls over the Grand Canyon, helping to fight the Dragon Bravo Fire burning on the North Rim in this 15-minute time-lapse.

The northbound/westbound lanes of the Loop 202 are closed Wednesday morning due to a deadly crash near Broadway Road in Mesa.

In a meeting with the Crown Prince of Bahrain, the president denied reports that he will fire the Chair of the Federal Reserve, Jerome Powell.

The latest on the Dragon Bravo and White Sage fires. Plus, the trails, lodges, and campgrounds that are closed to visitors.

A water treatment facility at the North Rim had been compromised by the fire, causing chlorine gas to fall to the bottom of the Canyon.