California ? Two huge wildfires driven by strong Santa Ana winds burned into neighborhoods near Los Angeles on Monday, forcing frantic evacuations on smoke- and traffic-choked highways, destroying homes and causing at least two deaths.

Around sunset, residents were warned to stay on alert during the night and winds more than 60 mph were forecast. Gov. Arnold Schwarze-negger declared a state of emergency in Los Angeles and Ventura counties.

More than 1,000 firefighters and nine water-dropping aircraft battled the 4,700-acre Marek Fire at the northeast end of the San Fernando Valley, and the 5,000-acre Sesnon Fire at the west end.

Winds blew up to 45 mph with gusts reaching 70 mph at noon. They were forecast to diminish in the evening before roaring back to more than 60 mph after 11 p.m.