PORT KELLEY - An estimated 2,500 acres burned in a grassland fire 1.5 miles south of Wallula Junction, and officials had no word on containment by early Saturday evening.
The Port Kelley fire started at 11:20 a.m. Saturday, and was most likely due to a lightning strike, fire officials said.
There were no injuries and no structures were damaged. Officials did not expect damage to nearby wheat fields or critical habitats.
Highway 730 remained opened during the fire, which spread quickly over steep terrain in a southerly direction.
Walla Walla County Fire District 6 was assisted by U.S. Fish and Wildlife, Columbia County, Benton County, Franklin County and Walla Walla County firefighters. Approximately 50-60 firefighters, 18 engines, two ATVs, and six command vehicles were called in. Additional resources were requested.
Fire officials reported that none of the few homes in the area were threatened.