CHEYENNE, Wyo. (AP) — A new wildfire has blown up about 15 miles west of Cody in northwest Wyoming.

Since it started on Tuesday, the fire has already burned about 15 square miles of mostly BLM, state and private land.

Fire officials say some structures have been lost but they are still working to determine how many and what type. Seasonal and permanent residences, several guest ranches and working ranches in the mostly rural area have been evacuated.

Firefighters who deal with the most serious and complex fires was being mobilized Thursday to attack the fire.

In western Wyoming, firefighters continue to work to increase containment of several large wildfires.

The Cliff Creek fire near Bondurant is 84 percent contained, while the Lava Mountain fire northwest of Dubois is 60 percent contained.

As of Thursday evening, the Tokewanna fire in Southern Uinta County is 90% contained.

As of Thursday morning (August 4th), the Sawmill Creek fire about 20 miles east of Douglas is 100% contained.