Flash Flooding Possible For Newport Beach: NWS

NEWPORT BEACH, CA — The National Weather Service in San Diego has issued an Urban and Small Stream Flood Advisory for Western Orange County in southwestern California until 12:30 p.m.

Doppler radar indicated bands of moderate rain moving across Orange County, the National Weather Service said.

"Moderate rain has already fallen early Monday morning at Seal Beach and Huntington Beach where over an inch of rain was reported," NWS said in release. "Additional rain over these areas will cause minor flooding on roads and in areas with poor drainage through early afternoon.

Some locations that may experience flooding include:

• Anaheim
• Santa Ana
• Irvine
• Huntington Beach
• Garden Grove
• Orange
• Fullerton
• Costa Mesa
• Tustin
• Seal Beach
• Laguna Beach
• Newport Beach.

Excessive runoff from moderate rainfall will cause flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots.

Another storm system brought southern California rain Monday, with lighter rainfall possible Tuesday.

Orange County temperatures showed highs of 59 in Yorba Linda and Fullerton; 60 in Mission Viejo, Laguna Beach, San Clemente and Anaheim; and 61 in Newport Beach and Irvine. Tuesday's Orange County highs will be a few degrees higher amid more rain.

If Monday's rainfall turns out to be heavy, " there will be a chance of flash flooding and debris flows in recent burn areas, possible rock and mudslides in steep canyons, and localized flooding of low-lying roadways," warned a National Weather Service statement.

The statement also warned of slick roads and reduced visibility this morning, which could affect the morning commute. Also expected are southwest winds, which, in combination with soil softened in recent rains, could down trees and power lines.

In the San Gabriel Mountains, winds of between 20 and 35 miles per hour are in Monday morning's forecast, along with gusts of between 50 and 55 mph, according the the NWS, which said a wind advisory would remain in force until 9 a.m.

Gusty winds will make mountain driving difficult, especially in high- profile vehicles, with major roadways affected likely to include Interstate 5 and state Routes 2, 14, 33 and 39, according to the NWS.

In the Antelope Valley, where southwest winds of between 20 and 35 mph are expected, along with 55-mph gusts, a wind advisory will be in effect until 9 p.m. Major roadways that could be affected include the Antelope Valley (14) Freeway and Pearblossom (138) Highway, according to the NWS.

The snow level, meanwhile, will remain high, with 1 to 3 inches likely to accumulate between 7,000 and 8,000 feet, according to the NWS. Accumulation of between 3 and 6 inches is possible above 8,000 feet.

The NWS forecast rain in L.A. County Monday and temperature highs of 54 degrees Fahrenheit on Mount Wilson; 56 in Lancaster and San Gabriel; 57 in Palmdale and Saugus; 58 in Pasadena, Burbank and at LAX; 59 in downtown L.A., Long Beach and Woodland Hills. A combination of rain and cloudy skies is expected Tuesday, along with highs in the low 60s.

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