The Lake Fire has grown to 27,041 acres with 52% containment and 1,977 personnel assigned, according to the authorities evacuees can return to their homes.
1,329 structures were threatened and 12 structures have been destroyed, according to the Angeles National Forest on Twitter.
Mandatory evacuations are in place as the Lake Fire continues to burn near North Lake Hughes Road.
Evacuations are Lake Hughes Road west of Pine Canyon, and north of Dry Gulch Road, east of Ridge Route Road, west of Lake Hughes Road and Fire Station 78 North of Pine Canyon and Lake Hughes Road south of SR138.
According to LA County Fire Department on Twitter last Friday afternoon "No new evacuation orders have been issued for the #LakeFire due to this afternoons flare-up. All previous evacuation orders are still in effect."
About 100 rural homes were evacuated in the Lake Hughes area of the Angeles National Forest, some 60 miles (97 kilometers) north of downtown Los Angeles.
Preliminary damage assessments found that at least three structures burned. It wasn't immediately clear if they were houses.
Officials were preparing for the possibility of extremely dangerous fires on Thursday as heat increases and humidity levels drop, fire officials said in a statement. The area was expected to have temperatures in the mid-90s (about 35 Celsius) or higher through the weekend.
"#LakeFire has been upgraded to a 2nd Alarm with potential for 1000 acres. Working w/ @LASDHQ for evacuations of Lake Hughes residents living north of incident," LA County Department of Fire said on Twitter.
Initially, according to LA County Department of Fire on Twitter Wednesday: "N Lake Hughes Rd/Pine Canyon Rd #USFS | Units on-scene reporting 50 acres w/ no structures threatened at this time."
KNX 1070's Scott Burt tweeted "Large #BrushFire in the #Castaic area burning near Lake Hughes Rd and Pine Canyon. This looks like a big one. Photo from Downtown."
