Red flag warning remains in effect in Southern California amid Santa Ana winds, low humidity

FONTANA, Calif. (KABC) -- A red flag warning remained in effect across much of Southern California on Thursday, amid increased fire danger caused by warm Santa Ana winds, low humidity and dry fuels, officials said.

A high-pressure dome is expected to send temperatures soaring to possibly record-breaking levels, including highs in the 90s and triple digits in the hottest areas, according to the National Weather Service.

The agency warned that hot conditions may also lead to an heightened threat of heat-related illnesses.

Humidity levels will remain in the teens and single digits, the weather service said.

MORE: Latest Southern California weather forecast

"Any fire ignitions in wind-prone areas will be capable of rapid-fire spread along with extreme fire behavior," the agency said.

A fast-moving blaze erupted in Lake View Terrace at about 2:30 p.m. Wednesday and scorched 62 acres, prompting a response by some 500 Los Angeles Fire Department firefighters.

The fire was knocked down just over two hours later, after it approached some homes in the area, the Fire Department said. No one was injured and no residences were damaged.

The red flag warning is scheduled to expire at 8 p.m. Thursday.