Spring storm sweeps across Calif., fouling freeway with mud

LOS ANGELES (AP) — A spring storm that pounded parts of Central and Southern California with heavy rain, causing streets to flood and closing key freeways for a time, continued to bring scattered showers Saturday and a chance of more flooding through the weekend.

"An unseasonably moist and unstable air mass will bring the potential for afternoon and evening showers and thunderstorms to the Antelope and Cuyama Valleys and all the mountain areas from Los Angeles to Santa Barbara counties, excluding the Santa Monica range," the National Weather Service said in a statement warning travelers to avoid taking roads filled with swift moving water.

The California Highway Patrol shut down northbound lanes of Interstate 5 at the Grapevine mountain pass shortly before 5 p.m. Friday due to flash flooding.

[...] Friday, a fast-moving thunderstorm dropped heavy rain on the Southern California cities of Ontario and Rancho Cucamonga, stranding drivers who got caught on flooded streets.