First Alert Forecast

Southern California's first storm of 2024 brings widespread rain and mountain snow

A series of winter storms are in this week's forecast for the first week of 2024 in Los Angeles.

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The first storm of 2024 in Southern California brought rain and snow overnight and into Wednesday morning to widespread parts of the region.

A winter weather advisory was issued for 3 a.m. Wednesday to 10 a.m. Thursday for the San Gabriel Mountains and Highway 14 corridor north of Los Angeles. The advisory includes the communities of Pyramid Lake, Acton, Warm Springs, Mill Creek, Mount Wilson, Mount Baldy, Wrightwood and the Angeles Crest Highway.

The winter weather advisory extends into the San Bernardino and Riverside county mountains.

Snow is expected above 4,000 feet in the mountains. Three to 6 inches of snow are possible in most areas with up to 8 inches in higher elevations.

Travel on the 5 Freeway through the Tejon Pass in northern Los Angeles County could be affected by snow, ice and winds.

Winds from 35 mph to 50 mph are in the forecast.

The first storm of the new year brings snow. Lauren Coronado reports for Today in LA on Wednesday Jan. 3, 2024.

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SoCal storms timeline

Here's a look at what to expect from this week's storms.

A system over the Pacific dropped south Tuesday into Wednesday as it neared the California coast and moved into the Los Angeles area.

Widespread light rain is in the forecast Wednesday morning with the best chance for wet weather from 10 p.m. Tuesday to 10 a.m. Wednesday. Snow levels will be around 4,500 to 5,500 feet. There is a 20-percent chance of thunderstorms.

"By 10 a.m., we're mostly done with the rain. A few isolated showers this afternoon," said NBCLA forecaster Belen De Leon.

Wednesday night into Thursday, scattered light showers are expected with the most activity in SoCal's mountains. One to 2 inches of snow are possible on the Grapevine section of the 5 Freeway north of Los Angeles.

"The Grapevine, watching that very closely, because it does seem a couple of inches are possible Wednesday night if there's enough moisture left over once that cold air settles on top of it," Magee said.

Looking ahead to the weekend, light rain is possible with snow levels dropping to 3,000 feet.

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