The fire broke Monday before 11 a.m. and burned 25 acres.
Anaheim police Sgt. Daron Wyatt says the fire remains a threat to about 3,500 Orange County homes overnight and neighbourhoods might not open until tomorrow. The damage assessment is ongoing.
The L.A. County Fire Department has six strike teams deployed in Orange County, said spokesman Marvin Lim.
It was just 5 percent contained.
Shifting winds were top of mind for crews on Wednesday. However, the 241 Toll Road was likely to remain closed.
In Orange, an evacuation center was established at at El Modena High School, 3920 E. Spring St.
A home lit up in flames as the Canyon Fire 2 ravaged the Orange County area Monday, Oct. 9, 2017.More news: Top 5 Jaw-Dropping Moments From "Star Wars"
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One of those evacuees was Alice Santos, who slept on one of the cots set up in the gymnasium.
Yorba, Irvine and Santiago Oaks regional parks were all closed to the public "as a precaution due to the proximity of the fire, " said Marisa O'Neil of OC Parks. She said she didn't get much sleep.
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Fires in California's wine country, an area in the north of the state, broke out almost simultaneously and then exploded overnight, sending residents fleeing as embers rained down and flames raged around them.
"We always have adequate staffing", Lim said.
The Anaheim Fire Department says the fire erupted late Monday morning and is being pushed by 25 miles per hour winds.
Update on road closures for @City_of_Anaheim @CityOfOrangeCA @CityofTustin.
The South Coast Air Quality Management District has issued a smoke advisory in the area because of the fire through Tuesday morning. They were hoping for more favorable weather to help attack the fire.
Thanks for all donation/resource offers.Evacuation shelters and firefighters have everything needed.