The blaze had consumed 16,490 acres and injured 10 people, according to San Bernardino National Forest officials.
On Monday, the fire became established in Mountain Home Creek, heading northwest toward San Bernardino Peak, and any residents remaining in Angelus Oaks were told to evacuate immediately.
More than 1,300 firefighting personnel are assigned to the blaze that has destroyed four homes and six outbuildings. It has damaged two other homes and six outbuildings, Cal Fire said.
Evacuation orders remained in effect for the area east of Bryant Street on Highway 38. The area includes Mountain Home, Forest Falls, Angelus Oak, 7 Oaks and Barton Flats / Jenks Lake Area east to Onyx Summit, Cal Fire said.
Big Bear residents and businesses are advised to stay on top of evacuations by going to the San Bernardino County Sheriffs Interactive Mapping Tool. A travel advisory was issued for the area.
A Red Cross evacuation center is located at the Redlands East Valley High School, 31000 E. Colton Ave. in Redlands.
Highway 38 is closed between Bryant Street and Lake Williams Drive.
Smoke from the El Dorado, Bobcat and Valley fires is impacting Inland Empire air quality. A Daily Smoke Report issued by the Wildland Fire Air Quality Program is available, and residents can also visit www.airnow.gov for air quality updates in their area.
Record heat and dry conditions helped the fire quickly spread north to the Yucaipa Ridge, fire officials said.
The Desert Sun reported that the family who planned the small gathering was cooperating with authorities and that no charges have been filed yet.
Fire officials told the publication that the family called 911 after trying to extinguish the blaze themselves. They remained on the scene until firefighters arrived according to the report.Cal Fire Capt. Bennet Milloy said the blaze remains under investigation.
“Those responsible for starting fires due to negligence or illegal activity can be held financially responsible and criminally responsible,” CalFire officials said Sunday.
Milloy said investigators are testing the mechanism used at the family gathering to see if it’s considered a “safe and sane” firework.
But he said “safe and sane” pyrotechnic devices are illegal in Yucaipa.