Evacuation orders for the 8,600-acre El Dorado Fire burning in the Yucaipa area were extended to a portion of Cherry Valley in Riverside County Monday.
The U.S. Forest Service said evacuation orders were in place for residents living in the area between the county line to the north, Beaumont Avenue to the west, Orchard Street to the south and Nancy Lane to the east.
The wildfire, which was 7% contained as of Monday morning, has also led to numerous evacuation orders in San Bernardino County.
Cal Fire officials said the blaze was sparked at about 10:20 a.m. Saturday by a smoke-emitting firework used at a gender-reveal gathering at El Dorado Ranch Park.
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 gathering was cooperating with authorities and that no charges have been filed yet.
“Those responsible for starting fires due to negligence or illegal activity can be held financially responsible and criminally responsible,” Cal Fire officials said Sunday.
So far, there have been no reports of injuries or structure damage due to the fire.
The U.S. Forest Service said that smoke from the blaze will likely affect portions of the Inland Empire and the San Gorgonio Pass.
Meanwhile, the South Coast Air Quality Management District issued a smoke advisory for some parts of Riverside County due to the fire.
“On Monday, winds near the fire will shift to come from the west and northwest and blow any smoke to the east and southeast through the San Gorgonio Pass and into the San Jacinto Mountains. Depending on fire behavior, Idyllwild, Banning, and the Western Coachella Valley may experience smoke impacts,” AQMD officials said.
Residents who see ash or smell smoke were urged to limit their exposure by remaining indoors with windows and doors closed or seeking alternate shelter, and avoiding vigorous physical activity.
U.S. Forest Service officials announced Monday that several national forests would close beginning at 5 p.m. due to the ongoing fire danger across the state, including the San Bernardino National Forest and Cleveland National Forest in the Inland Empire.
The order will be re-evaluated daily as conditions change.