Th Burris fire remained at 350 acres on Tuesday night, with containment up to 75 percent, according to Cal Fire.
It began Sunday afternoon in the area of Highway 20 and Potter Valley Road.
Forty structures remain threatened, and the fire has prompted evacuation warnings along Highway 20 south to Highway 175, east of the Russian River and west of the Lake County line, and the Potter Valley area, Cal Fire said.
Due to a red flag warning in effect for Mendocino County and much of the region – which is set to continue through 4 p.m. Wednesday – Cal Fire said firefighters are patrolling and taking action on any possible spotting outside of the current containment lines throughout the night.
Cal Fire said assigned resources Tuesday night included 962 personnel, 72 engines, six water tenders, three helicopters, 14 hand crews and six dozers.
Email Elizabeth Larson at