Firefighters worked the scene Sunday of a 50-acre vegetation fire north of state Route 78 near Ramona, authorities said.
The fire, dubbed the Clevenger Fire, started at about 5 p.m. said Southern California Air Operations.
CalFire San Diego said the fire was 0% contained and that firefighters planned to work through the night on a containment line, in a 7:15 p.m. Twitter post.
One firefighting crew at the scene said the fire was burning light flashy fuels with a slow-to-moderate rate of spread. The blaze, near Clevenger Trails, made a push up Juanita Ridge.
The San Diego Fire-Rescue Department offered support with a full response, according to the air operations agency.
CalFire reported that officials will close state route 78 from Horizon View to San Pasqual due to the fire.
Updated 7:20 p.m. June 20, 2021