Crews have been on the scene since early Monday afternoon.
Fire officials confirm the origin of the fire was a construction site near Taylor Bridge.
A Stage 1 Burn Ban was declared for both the Upper and Lower Yakima County areas, due to residual smoke originating from this wildfire.
Parts of Highway 97 reopened after being closed just east of Cle Elum due to the fire. The fire began Monday afternoon at Taylor Road and Hart Road, between Cle Elum and Thorp. It spread rapidly east.
Kittitas Valley Fire Rescue Deputy Fire Chief Rich Elliott tells Action News the fire is north of State Highway Ten.
Yakima County sent multiple engines to help get the flames under control.
Horizon Wind Farm has shut down operations for safety purposes.
An emergency shelter is still running at the Cle Elum Centennial Senior Center, 719 East Third Street, Cle Elum, 509-674-7530. An emergency animal shelter has been set up at the Kittitas County Fairgrounds.
Residents downwind of the fire should expect smoky conditions and poor air quality.