Flames scorched at least five acres and were moving at a moderate rate of spread in the community of Witch Creek, near Ramona.
The brush fire, dubbed the Creek Fire, broke out just after 2 p.m. along Creek Hollow Road.
Cal Fire said there was light fuel in the area and no immediate structure threat.
Three aircraft were at the scene.
At approximately 3:05 p.m., Cal Fire officials posted to Twitter informing residents that the forward rate of spread had been stopped.
No evacuations have been advised at this time, according to Lt. Amber Baggs with the San Diego County Sheriff's Department.
Cal Fire crews were expected to be at the scene for several hours to work on containment. As of around 5:45 p.m., the fire was 50 percent contained.
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