More than 1,000 firefighters are battling that blaze, which has scorched 11,500 acres and is only 3% contained, according to San Bernardino National Forest officials.
Another fire, the Ferguson Fire, has prompted the closure of the most iconic areas of Yosemite National Park until Sunday, killed one person and injured several firefighters.
Firefighters and police "went into life-safety mode", hustling door to door to usher civilians out of harm's way, said Scott McLean, a spokesman for the California Department of Forestry and Fire Protection (CalFire). No other details were provided. One firefighter responding to that blaze was killed - Cory Iverson, a 32-year-old with Cal Fire who left behind a pregnant wife and a 2-year-old daughter. He added: 'It's just a wall of flames.
The fire agency warned that these conditions included forecasts calling for high temperatures and ongoing dry weather.
There have now been three fire-related deaths in the state in recent weeks.
The blaze, which has killed a firefighter operating a bulldozer, was just 3 percent contained and threatened nearly 500 homes and businesses, state officials said early Friday.
Authorities say it is now almost 72 square miles (186 square kilometers), but containment has increased to 29 percent.
Uber and Lyft driver fired for secretly livestreaming hundreds of passengers
He said that at first he had informed passengers that he was recording them, but the videos felt "fake" and "produced". Since these actions need to be taken preemptively, Gargac is not guaranteed to have the ultimate control.
Dozens of evacuees are going to Shasta College, where officials have set up a shelter. Residents located west of Trinity Mountain Road use evacuation center located at Weaverville Elementary School 31020 HWY 3 in Weaverville. In Redding, which is home to about 91,000 people, officials ordered some residents to evacuate and warned others to remain vigilant, saying, "The situation may change rapidly and unexpectedly".
KRCR, a Redding, California, TV station and CNN affiliate, interrupted it's newscast and evacuated its facility Thursday night as the fire approached their studio.
The blaze grew overnight to 70 square miles (180 square kilometers). Cal Fire says the Carr Fire is just 6 percent contained.
"The operator was working on an active section of the Carr Fire", said Chief Brett Gouvea.
Residents in Shasta County have been urged to evacuate, with the mandatory evacuations increasing as the fire grows.
"I've never experienced something so terrifying in my life", said Liz Williams, who loaded up two kids in her auto and then found herself locked in bumper-to-bumper traffic with neighbours trying to retreat from Lake Redding Estates.
A day earlier, the flames turned the sky orange while sweeping through the historic Gold Rush town of Shasta and nearby Keswick, then jumping the Sacramento River into Redding, a city of about 92,000 people and the largest in the region.