Authorities said several fire departments in the North Bay are prepared for a vegetation fire that burned a building in an area north of Lakeville in Sonoma County.

According to a post by the Cal Fire Sonoma Lake Napa unit on X just before 5 p.m., the fire broke out near Old Adobe Road and Tunzi Lane in Lakeville, east of Petaluma. Winds are currently driving the so-called Gulch Fire uphill.

According to the post, Cal Fire has launched a comprehensive air and ground resource operation in the forested areas.

In a 5:07 p.m. update from Cal Fire, the airstrike said the fire was about 11 acres in size and burning at a moderate rate of spread. One building was fully ablaze and a second was threatened, fire officials said.

There are currently no reports of ordered evacuations.

This is a breaking news story. More information will be added as it becomes available.