CASTAIC, Calif. (KABC) --
The blaze, dubbed the Warm Fire, was reported to be near Lake Hughes and Warm Springs roads. About 75 percent of the structures at Warm Springs Rehabilitation Facility were burned.
Firefighters believe the fire, which is moving rapidly through dry brush, has the potential to grow to 2,000 acres.
Edison crews are also at the scene as the blaze threatens nearby power lines.
No evacuations have been ordered. Lake Hughes Road at Elizabeth Lake Road was shut down.