The National Weather Service issued a Red Flag Warning starting Monday for San Diego County's inland valleys and mountains.

The red-flag warning extended Wednesday for the county’s inland valleys still is set to expire at 6 p.m. Friday, with overnight northeast winds of 28 to 38 mph and possible gusts of 50 mph, up to 60 mph after midnight.

Firefighters in battle-scarred Los Angeles County and around Southern California could face “extreme” fire weather conditions in the coming week, the National Weather Service said on Saturday, Jan. 18.

Nearly 100,000 San Diegans could lose power during the next round of power shutoffs after the National Weather Service issued another Red Flag Warning for the region as Santa Ana winds return. A Red Flag Warning will go into effect from 10 a.

Strong Santa Ana winds are hitting fire-ravaged Los Angeles on Friday morning, but the winds will relax later in the day and the red flag warning will end Friday night.

A red flag warning is issued by meteorologists when ... Since last week, numerous fires have sparked in the Los Angeles area as Santa Ana winds gusted through the region. The two largest fires ...

Extreme fire conditions remain in the Southern California region as high winds have prompted a "Particularly Dangerous Situation" red flag warning,​ weather officials say.

That’s leading to the creation of mountain waves, which arise when strong winds blow perpendicular to a mountain range. The waves shoot down the coastal side of the mountains, gaining speed along the way, and are more casually referred to as simple Santa Ana winds.

"If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior," the NWS warns.

The winds fueling wildfires in Southern California are beginning to ease, but the forecast calls for their return next week. Offshore Santa Ana winds will diminish Thursday, though a red flag warning remains in effect for the San Gabriel and Santa Susana Mountains.

The National Weather Service has issued a Red Flag Warning for most of San Diego County amid another round of Santa Ana winds.