Showers will turn into steady rain Monday morning, with another half-inch to an inch-and-a-half inches of rain expected in the Los Angeles area before showers return this evening, lasting through Tuesday, a National Weather Service meteorologist said.
Monday morning’s showers were in advance of a new band of rain from the storm, which will make itself felt mid-morning or late Monday morning, NWS Meteorologist Curt Kaplan said. There could be up to 2 1/2 inches of rain in the San Gabriel Mountains and foothills.
Cooler temperatures accompanied the precipitation, leading to possible snowfall in the Grapevine area late Monday into early Tuesday and “maybe even a dusting in the Antelope Valley foothills,” Kaplan said.
The San Gabriel Mountains could see 8 to 16 inches of snowfall above 6,500 feet before the system moves out, he said.
The showers should move out late Tuesday into Wednesday, with the next chance of rain Friday evening into Saturday, Kaplan said.
Temperatures along the coast could range from highs in the mid-50s to 60 Monday and lows in the mid-40s to low 50s down to highs Tuesday in the low to mid-50s, he said. Similar highs are forecast for inland and valleys but lows could drop to the mid-to-upper 30s.
Along the coast, a high surf advisory remained in effect in Los Angeles and Orange counties until 11 a.m., forecasters said.
The NWS also issued wind advisory’s through 3 p.m. for the Malibu area, including Kanan, Malibu Canyon, Topanga and Decker Canyon roads, and until 9 p.m. for the Antelope Valley including Lancaster and Palmdale. South to southwest winds 20-30 mph are possible with gusts to 50 mph expected to develop starting Monday morning. Motorists are urged to be prepared for sudden gusty cross winds.
In the Woolsey Fire area in Malibu, Mulholland Highway was closed Sunday between Encinal Canyon Road and Westlake Boulevard because of debris flow, Caltrans said. Pacific Coast Highway was closed from the Ventura County Line to Kanan Dume Road, also due to debris flow.
Avenue T in the Littlerock area of the Antelope Valley was closed from Longview Road to 165th Street East due to mud flow and flooding, Caltrans said.
Rainfall totals for the year beginning Oct. 1, 2018, are above average and well above the previous year’s, Kaplan said. Downtown Los Angeles has seen 12.40 inches so far, with the average 7.5 inches and only 1.89 inches the previous year by this date, he said. The Sierra snow pack is 115-120 percent of normal.
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