Sacramento. A cool-down in weather has calmed a huge wildfire burning in Southern California coastal mountains as firefighters continue to cut kilometres of containment lines while conditions are favourable.High winds and withering hot, dry air were replaced on Saturday by the normal flow of damp air off the Pacific, significantly reducing fire activity."The fire isn’t really running and gunning,” said Tom Kruschke, a Ventura County Fire Department spokesman.Despite the favourable conditions, evacuation orders remained in place for residents in several areas.Nearly 1,900 firefighters using engines, bulldozers and aircraft worked to control the blaze.The 111-square-kilometre blaze at the western end of the Santa Monica Mountains was 30 percent contained.Firefighters said they had made "excellent” progress on Saturday in battling the blaze that threatened 4,000 homes near Los Angeles, nearly doubling the area under control, they said.