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It flared up Wednesday afternoon but firefighters completed their lines Wednesday night.

More than 100 firefighters from eight Washington counties were assigned to the blaze about five miles east of Wenatchee in central Washington.

At one point, a separate fire started to the north of the Badger Road fire, but the 50-acre blaze burned into the Badger Road fire and doused itself.

The cause of the original fire, first reported at 5 p.m. Monday, remained under investigation, officials said.

The National Weather Service issued a fire weather watch through Thursday evening for Klickitat, Benton, Franklin, Grant, Columbia and Walla Walla counties. No new fires were reported in Washington on Wednesday, according to the Northwest Interagency Incident Coordination Center in Portland, Ore.

A fire burning in a steep draw near Washington 14 about four miles north of Roosevelt and 30 miles east of Goldendale remained at 5,400 acres on Wednesday. About 600 firefighters contained that wildfire Tuesday.

Authorities said that fire was started by a wheat harvesting combine.