SAN DIEGO -- Overnight thunderstorms gave way to a mess on the roads Monday morning, with drivers getting stranded on flooded streets and dozens of freeway crashes.
Forecasters expected up to an inch of rain to fall around the region through Monday evening.
"Most substantial rain and mountain snow will occur through Monday, with another round Christmas night through Thursday," a National Weather Service report said.
The wet conditions wreaked havoc on the road. California Highway Patrol had reported more than 30 collisions, many of them minor, by 8 a.m. Flooded streets left at least two drivers stranded and forced road closures.
A semi crashed through the guardrail on the 805 Southbound at the Bonita Rd on ramp. The Bonita Road Southbound on ramp is closed due to hazmat and cleanup. #commuter_carl #fox5sandiego #sandiegofreeways #morningtraffic #sdwetfreeways pic.twitter.com/j1j8HHg7ir
— Commuter Carl FOX 5 (@Commuter_Carl) December 23, 2019
The storm is the first of two Pacific storms that will hit Southern California this week. A colder cell arriving Christmas night and lasting through Thursday will see temperatures plummeting and rain levels increasing, weather officials said.
Snow levels will be at 5,500 to 6,000 Monday, falling to 5,000 feet early Tuesday.
Rainfall will end Friday with dry weather likely next weekend, according to forecasters. Another Pacific storm could arrive by New Year's Eve.