More than 1,200 firefighters are battling a wildfire raging out of control in Northern California.<br />The wildfire threatens homes and other structures as thick black smoke drifts across the San Francisco Bay Area.<br />The so-called County Fire, has blackened more than 50 square miles of land since Saturday.<br />Officials ordered evacuations in several Yolo County communities.<br />Crews worked through the night to cut control lines around the blaze, which grew by one-third overnight Sunday. <br />
