What to Know
- Flood advisories were in effect early Monday for parts of Ventura, Orange, Riverside and San Bernardino counties.
- Rain was expected to taper off to scattered showers in the evening.
- Thunderstorms are possible in some areas Monday afternoon.
Heavy rain arrived in Southern California overnight ahead of a wet morning drive Monday as the last in a series of storms moved through the region.
Flood advisories were issued Monday morning for parts of Orange, Riverside and San Bernardino counties. The advisories, indicating flooding in low-lying areas and water ponding on roads, in Orange and Riverside counties continue until 11:30 a.m.
Communities in the advisory area in include Anaheim, Santa Ana, Riverside, Irvine, Moreno Valley, Huntington Beach, San Clemente and Garden Grove.
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A flood advisory was in effect early Monday for Ventura County and thunderstorms are possible in some areas. The flood advisory was in effect until 7 a.m. and included Oxnard, Santa Paula, Moorpark and other communities.
Periods of rain are expected through Monday, when drivers will likely encounter flooding on some roads. A stretch of Pacific Coast Highway was closed due to flooding north of Huntington Beach. Part of the 405 Freeway also flooded Monday morning in the Long Beach area.
"Scattered activity is expected, even throughout the afternoon," said NBCLA forecaster Belen De Leon. "You'll start off with the umbrella, and just keep it with you."
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Less severe flood watches will be in effect through the evening for parts of inland Orange County, and Riverside and San Bernardino counties.
A wind advisory was issued for parts of Los Angeles County until 2 p.m. Monday. South to southwest winds are expected from 20 to 25 mph with gusts from 40 to 55 mph. The strongest winds will be in the mountains and Antelope Valley foothills.
The wind advisory is in effect in Castaic, Newhall, Santa Clarita, Valencia, Gorman, Pyramid Lake, Acton, Warm Springs, Mill Creek, Mount Wilson, Mount Baldy, Wrightwood, The Angeles Crest Highway, Elizabeth Lake, Lake Palmdale, Valyermo, Llano and Pearblossom.
An evacuation warning was issued for residents in the Topanga Canyon area, affecting the area along Santa Maria Road north of Topanga Canyon Boulevard. Another evacuation warning was issued for the Agua Fire burn area along Soledad Canyon Road east of Agua Dulce Canyon Road.
The warnings took effect at 9 p.m. Sunday and will remain in force until 6 a.m. Tuesday. The warnings urged residents to prepare for possible evacuations.
Showers and storms are expected to start tapering off Monday afternoon.
"We're not out of the woods, just yet," said De Leon. "This afternoon, there's potential for some thunderstorms with heavy downpours likely."
Most of the rain will move out by Monday evening, except for some lingering showers over the north facing mountains.
Gusty northwest winds are likely in the mountains early Tuesday. Snow levels expected to remain above 7,000 feet, but could drop briefly to around 6,000 feet later Monday night.
The rest of the week looks dry into the weekend.
