Numerous vehicles collided in a foggy mountain pass as a storm system passed through Southern California on Wednesday.

The San Bernardino County Fire Department said 19 vehicles collided on the southbound side of Interstate 15 in Cajon (kuh-HOHN) Pass, about 60 miles (95 kilometers) east of Los Angeles.

The department says 35 people suffered minor to moderate injuries but most are declining to be taken to hospitals.

The department says weather was a contributing factor in the collision, which has closed the southbound side of the interstate. It is a major route between Southern California and Las Vegas.

As of 11:30am all southbound lanes are now closed again at Oak Hill to finish clearing 19+ car pile up in #cajonpass pic.twitter.com/0Dfh4tfiMN

— Will Lester (@WillLesterPhoto) January 16, 2019