A brush fire authorities say was accidentally caused by heavy equipment continued its relentless march Tuesday, prompting more evacuation warnings and some school closures.
The Airport Fire began about 1 p.m. Monday near Trabuco Canyon Road in the area of the remote-controlled airplane airport, said Orange County Fire Authority Capt. Sean Doran.
As of Tuesday afternoon the blaze had expanded to 10,000 acres, officials said.
“It has crested the north main divide and gone into Riverside County,” Orange County Fire Authority Capt. Steve Concialdi said Tuesday morning.
The blaze was also bearing down on Santiago Peak, which is home to a series of radio and television broadcast towers, used not only by local media outlets but also federal and local government agencies.
Concialdi said crews were working to protect the peak but had to withdraw from the area because the flames got “too intense.”
The blaze, which has zero containment, …