UPDATE: Santiago Canyon Brush Fire Under Control After Torching 15 Acres

A brush fire that torched 15 acres of brush along the 241 toll road near Santiago Canyon Road Thursday afternoon in about two hours is under control, authorities said.

The fire broke out at about 4 p.m. Thursday afternoon near Irvine Lake, but did not threaten any structures, according to the Orange County Fire Authority. The area has been the site of some of the county’s worst fires in recent years, and authorities responded with more than 100 firefighters, 16 engines, three helicopters and two airplanes.

By about 6 p.m., the fire was under control and its forward progress had been halted, OCFA Chief Kris Concepcion said.

Santiago Canyon Road was closed during the fire from the 241 to Irvine Lake, though the 241 remained open, according to the California Highway Patrol.

Shortly after 4 p.m. the blaze broke out and within an hour had blackened about five acres on the northeast side of Santiago Canyon Road near the 241 Toll Road, Concepcion said. Flames were headed toward the lake, he added.

A hot and dry offshore airflow has triggered an elevated fire danger for the region through Tuesday, according to the National Weather Service.

—City News Service contributed to this report.