Forecasters are expecting another Santa Ana wind event this week, threatening to worsen fires and walk back recent containment progress of the Los Angeles wildfires. AccuWeather meteorologists and the National Weather Service (NWS) have warned that strong winds are expected to build up from Monday,

Multiple counties in Southern California were under red flag warnings from the NWS early Monday, with the service warning of yet another round of Santa Ana winds.

Red Flag Warnings remain in effect through Friday evening for much of Los Angeles and Ventura Counties, the National Weather Service said.

Santa Ana winds occur when air flows west from a region of high pressure over the dry Great Basin to lower pressure off the California coast, According to Accuweather. As that cool interior air flows over and through mountain passes, it accelerates, sinks and compresses.

A much-needed break from high winds is in store for parts of coastal Southern California following multiple rounds of Santa Ana events, AccuWeather weather meteorologists say. However, the overall setup for strong wind events will return in the days ahead.

The ferocious Santa Ana winds that helped fuel the deadly wildfires around Los Angeles are forecast to ease later Wednesday, but they may return.

A rare Particularly Dangerous Situation warning has been issued for Southern California as a powerful and potentially damaging Santa Ana wind event​ is expected.

A "particularly dangerous situation" warning goes into effect Monday as strong Santa Ana winds return along with a heightened risk of wildfires.

Another round of fire-fueling Santa Ana winds is lashing Southern California after a brief weekend reprieve helped crews make more progress battling the deadly infernos in Los Angeles County.

Extreme fire weather returns to Southern California - particularly Los Angeles and Ventura counties - as winds of up to 100 mph have prompted the most urgent warning from the National Weather Service.

The National Weather Service issued its highest fire weather alert level for portions of the Los Angeles area for Monday into Tuesday morning, as powerful Santa Ana winds return. Threat level: The "Particularly Dangerous Situation" Red Flag Warning indicates any fires that ignite could quickly grow out of control.