The National Weather Service has extended a Red Flag Warning until Friday morning for San Diego County's inland valleys and mountains.

"A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly," the NWS said.

POWAY, Calif. — As of Wednesday night, San Diego Gas and Electric’s public safety power shutoffs had impacted parts of Alpine, Descanso and Julian. The reason for these power shutoffs is to prevent wind-damaged power lines from potentially sparking fires. A Red Flag Warning remains in effect until Friday morning.