NAPA COUNTY, Calif. - A fire in Napa County continues to grow. As of 11 o'clock Tuesday night 2,700 acres of vegetation had burned. Officials say the fire has damaged five structures and prompted mandatory evacuations. The fire broke out around noon Tuesday and blew up from about 200 acres to over a thousand in just a couple hours. No injures have been reported. Fire crews say they have the fire 30 percent contained. The cause is still under investigation.