Lilac Fire Update, San Diego County Getty Images

Officials in the area surrounding northern San Diego County say the Lilac fire has been 20 percent contained and full containment is not estimated through Dec. 21. CAL Fire and Cal OES say the Red Flag Warning will remain in effect until 8 p.m. PT Sunday.

According to CAL Fire, firefighter teams were able to increase containment lines and Saturday's weather was "favorable" to increase containment through the afternoon. But shifting afternoon winds are predicted that will create active fire from flying embers late into the evening due to the Santa Ana winds and low relative humidity forecast for the region. NBC 7 reports that three shelters will remain open to evacuees escaping the Lilac Fire.

As of Saturday morning, the Lilac Fire has burned 4,100 acres and destroyed at least 105 structures along Highway 76, which stretches out west through Bonsall and Fallbrook communities, The Los Angeles Times reports. Officials cautioned that embers may get kicked up and start new fires in the coming 24 hours as the Santa Ana winds are expected to keep up through Sunday.

At least six people have been recorded as injured from the fire, with no fatal injuries, officials told the Los Angeles Times. The fire killed 35 horses at the San Luis Rey Downs training facility. The blaze also injured two firefighters and four others including a trainer who suffered burns on nearly 50 percent of his body. The Rancho Monserate Country Club mobile home community lost more than 65 houses near where the fire first started Thursday morning.

The rapid wildfire broke out in San Diego County on Thursday and quickly consumed dozens of structures across 2,500 acres and was zero percent contained even until late Thursday evening, officials said.

Deputies patrolling the heavily burned area of Bonsall in San Diego County came upon a box of three kittens that was promptly taken to the Gaines Street animal shelter as they look for their owners, San Diego County Sheriff Bill Gore told the San Diego Union-Tribune.

The Lilac Fire, one of six major wildfires in the region, began along Interstate 15 and State Route 76 on Thursday morning and has continued to wreak havoc north of San Diego.