SE Wyo Fire Tops 21 Sq Miles, Forces EvacuationsPosted by John AxtellDate: September 21, 2020478 Views A wildfire in southeastern Wyoming has burned over 21-square miles or nearly 14,000 acres and was still just 2% contained as of 8:00 last night. The Mullen Fire was ignited by lightning on Thursday. An over 300-square-mile area between Centennial and Ryan Park was ordered Saturday with the Albany County Emergency Management Agency requesting evacuation of the Keystone area yesterday. A pre-evacuation notice has been issued for Centennial Valley, which includes the communities of Albany and Centennial. Officials say fire growth was not as intense as expected yesterday as the blaze slowed after coming out of the Savage Run National Wilderness area The only containment lines are near the fire’s heel on the west side while aerial tankers and helicopters were successful yesterday in checking growth to the east and southeast. A Type II Incident Management Team will assume management of the fire tomorrow with more precise mapping today expected to refine the fire perimeter and its size. The fire continues to close in on the Rob Roy Reservoir, part of the the system of reservoirs and pipelines that provides much of the water for Cheyenne. City officials say the water system remains safe and able to filter out ash and other contaminants.