Thunderstorms were in the forecast Sunday for the San Mateo and Monterey County coasts, with lightning strikes reported early Sunday, the National Weather Service reported Sunday.

Snow was also expected in some of the higher elevations of the Santa Lucia Mountains, a mountain range that runs from Monterey County south to San Luis Obispo.

In Southern California, the storm dropped snow as low as 3,500 feet early Sunday, and winds with gusts topping out at 50 mph were expected in some mountain areas and in the foothills of the San Gabriel Valley.

The storm could dump up to four inches of snow before moving out Southern California Monday morning, forecasters said.

Along the beaches, officials were warning about dangerous rip currents and waves as high as 15 feet from Big Sur south to Point Conception in Santa Barbara County.

A high surf advisory was in effect through Monday night for the area.

In the Sierra Nevada, forecasters said snow showers were expected throughout Sunday, with the heaviest snow falling in Mono County, where up to five inches was expected to accumulate.  

Near Lake Tahoe, ski resorts in the area were expected see about two inches of new snow, on top of the one or two inches of snow that fell Saturday and early Sunday.

Officials said Sunday that tire chains were required on all vehicles except four-wheel drives on Highway 50 over Echo Summit and on Highway 88 over Carson Pass.

Tire chains or snow tires were also required on a 75-mile section of Highway 395 along the eastern Sierra between Bridgeport and Carson City, Nev.