NORTH COAST, Calif. – As containment grew on a Mendocino County fire on Monday, there also were increasing concerns that the fire could jump its lines and threaten the Potter Valley community.

The Burris fire remained at 350 acres with containment up to 50 percent on Monday evening, Cal Fire said.

The fire began on Sunday afternoon in the area of Potter Valley Road and Highway 20 and prompted an evacuation warning for Highway 20 south to Highway 175, east of the Russian River and west of the Lake County line.

Cal Fire said the fire is threatening 40 structures, with none so far been damaged.

However, an impending Tuesday morning red flag warning and a potential for the fire to jump the lines at the Cold Creek Compost Facility spurred the Mendocino County Sheriff's Office to issue an evacuation warning Monday night for the Potter Valley area.

If the winds push the fire beyond its contained edge, a full evacuation order could be called for Potter Valley, the sheriff's office said.

The agency urged residents to be prepared to leave immediately should an order be called.

Cal Fire said that approximately 1,008 firefighters are assigned to the incident, along with 77 engines, six water tenders, three helicopters, 15 hand crews and six dozers.

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