(Hermiston, OR) -- Strong winds caused a brush fire east of Hermiston to grow fast Tuesday afternoon. The Hat Rock Fire burned 15-thousand acres in Oregon and spread into Washington state where it's being battled as the Benton Complex Fire. The Oregon State Fire Marshal sent six task forces to contain the fire. Some of the crews were moved to a second fire northeast of Pendleton. The Mount Hebron Fire burned 600 acres before it was contained Tuesday night. Cooler temperatures and weaker winds are helping fighters strengthen containment lines.