Firefighters continue to defend buildings with sprinklers and burn-out operations as the Beaver Creek Fire continues to burn two miles south of the Wyoming/Colorado border, about 15 miles northwest of Walden, Colo.

The fire had burned 6,235 acres as of a Monday morning report from the Rocky Mountain Incident Management Team. Containment is still estimated at 5 percent, with 485 personnel assigned to the fire.

Fire activity is expected to increase Monday due to northwest winds at 5-10 mph, gusting up to 15 mph, and the combination of low humidity at temperatures ranging from 75-80 degrees at different elevations on the fire.

Monday morning winds are expected to lift the inversion that covered the fire overnight. Laramie and other surrounding communities may see and smell smoke.

Engine crews worked Monday to prepare to defend buildings in the face of advancing flames. Crews are building contingency lines in places that give them the best shot at success.

Air tankers and helicopters are available to slow the advance and cool hot spots as the day wears on.

The fire has claimed two outbuildings, according to the Jackson County Sheriff's Office. An outbuilding is defined as a building separate from the main building, such as a shed.

All residential structures within and near the fire perimeter have been saved as of Monday morning.

Flames now threaten sixty residences or cabins as the fire continues to advance. Concerned cabin owners or local residents can call the Jackson County Sheriff's Office at 970-723-4242 for damage or loss information.

Investigators have not yet identified the cause of the fire. Anyone with information on suspicious activity on Sunday, June 19 near where the fire started in the Twisty Park area can contact U.S. Forest Service Officer Hannah Nadeau at 307-343-2335.

See the video below for a Sunday afternoon update from Deputy Incident Commander Rob Powell.