More rain is coming to the Southland on Monday and Tuesday, prompting a flood watch to be issued Sunday for large parts of Orange County.

The flood watch will be in effect from late Monday through Tuesday evening for the county’s coastal areas, inland areas including Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton and Mission Viejo, and the Santa Ana Mountains and foothills.

Some areas of Los Angeles and Orange County could see mild showers after midnight Sunday, but the main precipitation is expected late Monday and into Tuesday, according to the National Weather Service.

The weather service said guidance indicates “good confidence in a strong and powerful storm.” Rainfall amounts were on track for 2-4 inches for the coast and valleys, and up to 4-8 inches in the mountains.

“Heaviest rain likely Mon afternoon-Tue. Impacts include urban and small stream flooding. possible mainstem river flooding & mud and debris flows in and around recent burn areas,” the NWS tweeted Sunday. The weather service also warned of gales and high surf expected over the region through Tuesday.

Gusts of up to 65 mph were predicted for the Los Angeles County mountains Sunday night, and up to 70 mph Monday. The snow level could drop to 6,000 feet Tuesday.

The Antelope Valley was expected to see gusts up to 60 mph Sunday night and Monday.

Temperatures will stay cool throughout the week, with highs in the lower 60s. Overnight lows will mostly be in the 40s and lower 50s, but will drop into the 30s in the mountains and high desert.

Health officials did issue a cold weather alert for Lancaster and Mt. Wilson, where near-freezing or sub-freezing temperatures are expected. The alert will be in effect Tuesday through Friday in Lancaster, and Wednesday in Mt. Wilson, according to the Los Angeles County Department of Public Health.

Partly sunny skies will return Wednesday and Thursday, but more rain is possible next weekend, possibly as early as Friday night, according to the NWS.

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