Gusts of up to 70 mph are possible along the coast and valleys, and in the mountains, up to 100 mph, the National Weather Service said. Parts of L.A. County, and most of Ventura County, are at highest risk.

Los Angeles County officials urged the public on Monday to prepare as dangerous Santa Ana winds returned to Southern California, raising the risk of more explosive wildfires. The National Weather Service is forecasting another Particularly Dangerous Situation red flag warning and extreme fire weather between noon Monday and 2 p.