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.

Red flag warnings in seven counties ... While the threat of the Santa Ana winds’ fierce, sustained winds prompted a “particularly dangerous situation” bulletin from the National Weather ...

SAN DIEGO (FOX 5/KUSI) — It feels a bit like deja vu but Southern California is stuck in a weather pattern that has consistently brought the threat of powerful Santa Ana winds and fire danger.

A critical fire threat will continue across County as Santa Ana winds and dry conditions persist through early Friday, according to the National Weather Service.

Santa Ana winds will continue through Wednesday ... Sign up for NBC San Diego's News Headlines newsletter. A red flag warning is issued when low humidity and gusty winds are at levels that ...

RED FLAG WARNING CONTINUES IN THIS PART OF CALIFORNIA ... Conditions are forecast to improve on Thursday as the Santa Ana winds weaken, lowering the wildfire risk for late week.

gusty Santa Ana winds are returning to the region this week, raising the threat of more destruction as humidity levels remain low and dry conditions persist. High winds and red flag advisories ...

Red flag warnings are not necessarily a prediction ... warning of extreme fire risk and blowing dust for much of southern California. A Santa Ana winds forecast map by AccuWeather.

Red flag warnings cover Southern California from ... Santa Ana Mountains in northeastern Orange County. Last week, Santa Ana wind gusts reached hurricane strength at times before calming in ...

"A strong Santa Ana Wind event is expected to develop Monday and last through at least Tuesday," the National Weather Service said in its red flag warning, adding that the humidity will fall sharply.