The C-Line fire has burned up to 60 acres of trees and logging debris on state trust lands in the Capitol State Forest. East winds are blowing at 5 to 10 miles per hour.
The fire, first reported at 12:30 a.m. Sunday, is southwest of Olympia and smoke is visible from the capitol city.
About 40 people are fighting the fire with engines and one helicopter on the scene. The cause of the fire is under investigation, the DNR said.
An all-terrain-vehicle festival is happening in the forest this weekend and some roads and trails have been closed because of the fire.
People are being asked to stay away from area by the West Thurston Regional Fire Authority.
Air traffic is also being restricted to allow the Department of Natural Resources to get in safely and deliver the water needed to help combat the growing blaze, West Thurston Fire said earlier Sunday.
No homes or buildings are threatened at this time.
The Dog Mountain Fire is burning in a recently logged area and 8-year-old forest plantation owned by Port Blakely Tree Farms.
Firefighters are working on about 10 acres of burning patches within a 100-acre perimeter, the DNR reports. That fire burning on steep terrain in eastern Lewis County near Riffe Lake is also producing a large amount of smoke.
The High Valley Lane fire near the Tenino has been contained and firefighters are putting out hotspots.
So far, tthere have been no evacuations or injuries from either fire.