SUNNYSIDE -- A brush fire blackened between 250 and 300 acres northeast of Sunnyside on Saturday afternoon.
About 50 firefighters from several jurisdictions contained the blaze within hours and were mopping up Saturday evening, said Capt. Joel Byam of Yakima County Fire District 5.
The fire was off the end of Washout Road in the area west of Highway 241.
The cause was unknown, Byam said. A caller reported seeing smoke about 1:30, and Byam confirmed the fire as he headed into the area to check.
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Byam said he quickly called in crews from the Upper Valley and Hanford in order to keep the fire from spreading. Firefighters already are on alert because of the Fourth of July.
The fire is one of the bigger ones handled so far this season by District 5.
"It's not a good start to the week, that's for sure," Byam said, adding that Lower Valley firefighters responded to a few fireworks-related spot fires Friday night and expected more Saturday night.
The fire started in District 5 territory near the boundary with land belonging to the federal Bureau of Land Management, which requested two helicopters for water drops.
There are no homes or other structures in the area to be threatened, officials said.