A huge wildfire threatens an entire northern Alberta city. Source: CBC News A huge wildfire in Fort McMurray, Alta., destroyed an entire neighbourhood and burned homes and businesses in several others Tuesday, and continues to rage out of control. By late afternoon, the entire city of 60,000 had been ordered evacuated. Residents by the thousands fled the fire and for hours caused gridlock on Highway 63, even overwhelming oilsands work camps, where beds and meals were offered.