Officials with the interagency fire group managing the Callahan Fire estimated the size of the blaze at 1,660 acres on Sept. 17.
The fire remains zero percent contained, officials said. About 220 firefighters are assigned to the blaze. The firefighter crews have received support from two helicopters, eight engines, three water tenders and seven pieces of heavy equipment.
Fire containment efforts on Sept. 16 were focused on the southern end of the blaze. Crews were able to keep the fire north of Glad Creek Road and South Fork Callahan Trail by using hose lays. Officials estimated a spot fire, located to the east of the main fire, was burning at six acres. Helicopters provided water bucket drops while firefighters on the ground worked to keep it from spreading.
The Northern Rockies Team Seven, a Type II Incident Management Team, assumed command of operations Sept.16.