UPDATE PER LAKE COUNTY SHERIFF'S OFFICE: Evacuation advisories for local residents have been lifted at this time.
KELSEYVILLE, Calif. – Firefighters are working at the scene of a fire at the intersection of Highway 29 and Highway 175/Cobb in the Kelseyville area.
The fire, called the Bottle incident, was first reported shortly after 4:30 p.m. Tuesday, according to reports from the scene.
Initial reports indicated it could have been in connection to a traffic collision, according to the California Highway Patrol.
Sheriff Brian Martin confirmed that it appeared that the fire had been caused by a vehicle crash, but added that the cause has not yet been determined.
The Lake County Sheriff's Office issued an alert shortly after 5 p.m. reporting that firefighters were at work on the fire.
At that point, the sheriff's office said no homes were threatened, but residents in the area were advised to monitor their surroundings and be prepared to evacuate. Power lines also were reported down in the area.
The CHP and the sheriff's office said Highway 29 will be closed down between Highway 175 and Kits Corner.
Traffic is being diverted onto Bottle Rock Road from Highway 29 and onto Red Hills Road from Kit's Corner, the CHP said.
Just before 5:45 p.m., Cal Fire reported that the fire was between 40 and 50 acres, based on aerial mapping.
The Mount Konocti lookout tower also was reported to be evacuated a short time later.
Additional equipment has been requested to respond from South Lake County Fire, according to radio reports.
Just before 6:15 p.m., the fire was reported to be 75 acres, according to Cal Fire air attack.
On Tuesday evening Sheriff Brian Martin was near the fire area and reporting via Facebook that residents near the area should be prepared to evacuate "at a moment's notice."
Due to weak signal he continued his report by phone with Lake County News to say that it appears that the fire is largely in sparsely populated wildland area.
As to progress made on the fire, Sheriff Martin reported from his vantage that it was "hard to tell from the road” but that it looked like firefighters are making progress.
Shortly after 7 p.m., the fire's forward progress was reported to be contained and evacuation advisories for nearby residents had been lifted.
At about 7:30 p.m., the CHP said Highway 29 at Kit's Corner and at Highway 175/Cobb was remaining closed for an undetermined amount of time.
This story is being updated as the situation develops. More information will be posted as it becomes available.
Email Elizabeth Larson at elarson@lakeconews.com. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.