Rare July thunderstorms

A bridge on Interstate 10 over Tex Wash between Coachella, Calif., and the Arizona border collapsed during Sunday’s flash flood.

Caltrans inspectors look over a bridge on Interstate 10 between Coachella, Calif., and the Arizona border that washed out during Sunday’s flash flood.

Sunday’s flash flood drove boulders, sand and desert trees down Tex Wash near Desert Center, Calif., damaging the bridge.

Caltrans engineers check the condition of a 1932 bridge that parallels Interstate 10 and was damaged out during Sunday’s flash flood.

California Highway Patrol vehicles block a section of Interstate 10 between Coachella, Calif., and the Arizona border, where Sunday’s flash floods washed out a bridge over a desert wash.

CalTrans inspectors assess the condition of the westbound bridge on Interstate 10.  (Don Bartletti / Los Angeles Times)

A vehicle drives through a flooded section of the road that was closed off on Pebble Beach Drive in Victorville, Calif.

Several people observe the mud and rocks that closed Lone Pine Canyon Road in Wrightwood, Calif.

A man jumps over a small flow of water where rocks and mud closed Lone Pine Canyon Road after it rained in Wrightwood, Calif.

Mockingbird Road is covered in mud and rocks after it rained in Wrightwood, Calif.

Traffic moves over the Santa Susana Pass on State Route 118 as rain falls Saturday.

Lighting and rain on Saturday forced beach closures along the Southern California coast but did not deter some beachgoers and fishermen from heading to the Malibu Pier.

Beach-goers in Malibu walk along the water during Saturday’s rain storms.

Two women duck under a jacket to stay dry while walking on the Santa Monica pier on Saturday. Santa Monica Beach and others were closed after lightning was observed.

Rain gathers on windows as beach-goers come and go from Santa Monica Beach on Saturday.

Lightning splits the sky over downtown Los Angeles July 18, 2015. More storms could be ahead in the coming days.

Bummed out surfers pack up to leave the shore in Santa Monica after a beach closure Saturday.

Los Angeles County Fire Dept. Lifeguard Capt. Remy Smith announces to beachgoers that Santa Monica and all other Los Angeles County beaches are closed because of the potential for lightning strikes after lightning was observed in Santa Monica on Saturday.

Surfers head out to the beach but then have to turn around after being advised that all Los Angeles County beaches were closed due to lightning.

Umbrella-toting beachgoers walk across the beach amid rain showers in Santa Monica.

A bummed-out surfer prepares to leave Santa Monica beach after lifeguards announced that all L.A. County beaches are closed. Lightning forced the closure for about two hours Saturday.