A bushfire that started in the Angeles National Forest north of Azusa grew to 100 acres late Monday afternoon.
The Gulch Fire is burning uphill near the San Gabriel Dam and heading west-northwest, forest officials said. Highway 39 is closed north of Azusa and there is no access to San Gabriel Canyon.
The fire remained at 100 acres and was 0% contained as of Monday night, forest officials said.
A second, smaller fire burned near Morris Dam, the Los Angeles County Fire Department said.
Dana Dierkes, a spokeswoman for Angeles National Forest, said the smaller fire is considered part of the Gulch fire.
The fire was first reported just before noon as it burned through dense vegetation but no buildings were threatened. Power lines worried firefighters, and one firefighter sprained his ankle, according to incident reports.
The cause of the fire was still being investigated in the late afternoon, said Dierkes.
Firefighters worked aggressively to contain the blaze, using more than 200 personnel along with four night-flying helicopters, forest officials said.
Forest visitors should be vigilant and take steps to prevent fires, Dierkes said. All campfires or grills should be treated with care and completely extinguished after use.
Those towing trailers or other items should be careful not to drag tow chains on the roadway, as they can cause sparks that ignite fires, Dierkes said. Motorists should also be careful not to stop at the curb, as a vehicle’s hot undercarriage can ignite dry grass.
The fire comes as California prepares for what is expected to be the longest and most intense heatwave of the summer.
The National Weather Service has issued an excessive heat warning for much of Southern California as temperatures are expected to be in the triple digits this week and through Labor Day weekend.
Meteorologists warn of an increased risk of fire weather from Wednesday to next Tuesday.
https://www.latimes.com/california/story/2022-08-29/gulch-fire-north-of-azusa-angeles-national-forest 100-acre Gulch fire north of Azusa is 0% contained in Angeles National Forest