Officials evacuated the homes and multiple Sonoma County agencies have contributed ground and air resources to combat the blaze.
Cal-Fire public information officer Will Powers said crews will stay on the scene overnight to maintain control lines and conduct ember mop ups.
The Sonoma County Sheriff’s Office sent out a Nixle report at 2:53 p.m. advising Sonoma County residents to stay clear of the area while the Cal-Fire operation continues.
“Cal Fire reported they have a good handle on the situation,” Sgt. D. Thompson said.
No damage to structures has been reported and the cause of the fire remains under investigation.
Cal Fire are using the entrance to Madrona Manor to access the fire and have set up a staging area in the DaVero Winery across the street.
The wildfire, just one mile from downtown Healdsburg, began as the Mendocino Complex Fire, which recently replaced last year’s North Bay fires as the largest in California state history, continues to blaze to the north.