Two children, their great-grandmother and two firefighters have died in a wildfire in northern California, say officials.

Reports said Emily Roberts, five, James Roberts, four and Melody Bledsoe, 70, died in the fire along with two officials trying to tackle the blaze.

Residents of Redding, a city of 92,000 about 100 miles south of the Oregon border, described a chaotic and congested getaway as the fire spread.

“I’ve never experienced something so terrifying in my life,” said Liz Williams, who loaded two children in her car and then found herself locked in bumper-to-bumper traffic with neighbours trying to retreat from Lake Redding Estates.

“I didn’t know if the fire was just going to jump out behind a bush and grab me and suck me in,” Ms Williams said. “I wanted out of here.”

The flames moved so fast that firefighters working in oven-like temperatures and bone-dry conditions had to drop efforts to battle the blaze at one point to help people escape.

Scott McLean, a spokesman for Cal Fire, the state agency responsible for fighting wildfires, said: “The fire created at least two flaming tornados that toppled trees, shook firefighting equipment and broke vehicle windows, taking down everything in its path.”

Fire officials warned that the blaze, which is believed to have been caused by a mechanical issue involving a vehicle, would probably burn deeper into urban areas before it could be contained.

North California news station forced to evacuate live on air due to encroaching wildfires

Steve Hobson, a former firefighter, detailed his dramatic escape from the flames – in which he had to drive through walls of flaming embers.

“I didn’t know if I’d make it, so I just got in the middle of the street, went down the middle of the street through the embers and the smoke and made it past,” he said.

Mr Hobson’s house survived, however.

California in flames: wildfires rage across the US state in 2018 Show all 45 1 /45 California in flames: wildfires rage across the US state in 2018 California in flames: wildfires rage across the US state in 2018 Firefighters try to limit the spread of the Carr Fire by backburning, a process by which areas in the path of a fire are burned up in advance to rob the fire of its fuel Getty California in flames: wildfires rage across the US state in 2018 A street is devastated by the Carr Fire in the town of Redding AP California in flames: wildfires rage across the US state in 2018 A truck burned by the Delta Fire is abandoned along interstate 5 AFP/Getty California in flames: wildfires rage across the US state in 2018 This image from the National Oceanic and Atmospheric Administration highlights the major fire AP California in flames: wildfires rage across the US state in 2018 The Ranch Fire spots out ahead of the main fire in Spring Valley, burning two homes AP California in flames: wildfires rage across the US state in 2018 A picture taken by German astronaut and geophysicist Alexander Gerst, showing wildfires in the state of California as seen from the International Space Station AFP/Getty/ESA/Alexander Gerst California in flames: wildfires rage across the US state in 2018 Evacuees from Lucerne, from left, Ken Bennett with Ember Reynolds, 8, and Lisa Reynolds watch the sunset as smoke from the Ranch Fire rises into the sky at Austin Park Beach in California's Clearlake with Mount Konocti in the background The Press Democrat via AP California in flames: wildfires rage across the US state in 2018 The memorial for Redding firefighter Jeremy Stoke AP California in flames: wildfires rage across the US state in 2018 Aerial view of Trabuco Canyon as a tanker aircraft dumps load onto Holy Fire, Near Santiago Peak, California, U.S., August 6, 2018 in this still image taken from a video obtained from social media. 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MANDATORY CREDIT SOCIAL MEDIA REUTERS California in flames: wildfires rage across the US state in 2018 Holy Jim volunteer firefighter Luke Senger stands next to a home destroyed the Holy Fire in Trabuco Canyon AP California in flames: wildfires rage across the US state in 2018 Firefighters try to stop the spread of a massive fire in Lake County AP California in flames: wildfires rage across the US state in 2018 A woman walks out of the water after taking a dip as smoke rises in the distance from the Holy Fire in Cleveland National Forest Getty California in flames: wildfires rage across the US state in 2018 A pyrocumulus cloud (or cloud of fire) explodes in the Carr fire near the town of Redding Getty California in flames: wildfires rage across the US state in 2018 The Delta Fire burns in the Shasta-Trinity National Forest AP California in flames: wildfires rage across the US state in 2018 Trees set alight near Whiskeytown Getty California in flames: wildfires rage across the US state in 2018 An firefighting aircraft drops fire retardant to slow the spread of the River Fire near Lakeport Getty California in flames: wildfires rage across the US state in 2018 A firefighter lights backfires in an attempt to limit the spread of the Ranch Fire Reuters California in flames: wildfires rage across the US state in 2018 Firefighters light backfires to defend houses in the town Upper Lake from the Ranch Fire Getty California in flames: wildfires rage across the US state in 2018 Flames consume a home in Lakeport AP California in flames: wildfires rage across the US state in 2018 The Ranch Fire spread towards the town of Upper Lake AFP/Getty Images California in flames: wildfires rage across the US state in 2018 A firefighter lights a backfire in the city of Redding Getty California in flames: wildfires rage across the US state in 2018 The Carr Fire burns near Whiskeytown AP California in flames: wildfires rage across the US state in 2018 Firefighters try to limit the spread of the Carr Fire by backburning Getty California in flames: wildfires rage across the US state in 2018 Flames flare in the Cajon Pass near San Bernardino AP California in flames: wildfires rage across the US state in 2018 An firefighting aircraft drops fire retardant to slow the spread of the River Fire near Lakeport Reuters California in flames: wildfires rage across the US state in 2018 A schoolhouse burns in the Carr Fire in Shasta County AP California in flames: wildfires rage across the US state in 2018 The Carr Fire burns along Highway 299 by the city of Redding AP California in flames: wildfires rage across the US state in 2018 A car is seen amongst the devastation left by the Cranston Fire EPA California in flames: wildfires rage across the US state in 2018 A firefighter waters down a backfire on Cloverdale Road in Igo AP California in flames: wildfires rage across the US state in 2018 Firefighters convene while battling the Carr Fire in Shasta County AP California in flames: wildfires rage across the US state in 2018 Firefighters assess the damage in San Bernardino County AP California in flames: wildfires rage across the US state in 2018 The Carr Fire burns along Highway 299 by the city of Redding AP California in flames: wildfires rage across the US state in 2018 The Carr Fire burns along Highway 299 in Shasta County AP California in flames: wildfires rage across the US state in 2018 The land around Mountain Centre has been left devastated by the Cranston Fire EPA California in flames: wildfires rage across the US state in 2018 Firefighters battle the Carr Fire in the town of Redding AP California in flames: wildfires rage across the US state in 2018 A home burns in Redding Getty California in flames: wildfires rage across the US state in 2018 The Cranston Fire burns south of Idyllwild AP California in flames: wildfires rage across the US state in 2018 The Carr Fire burns through the town of Shasta AP California in flames: wildfires rage across the US state in 2018 A home burns in Redding Getty California in flames: wildfires rage across the US state in 2018 A collection of antique cars has been destroyed by the fire in the town of Redding Getty California in flames: wildfires rage across the US state in 2018 A home on Sunflower Road in Redding burns in the Carr Fire Getty California in flames: wildfires rage across the US state in 2018 A helicopter aids utility workers as they work to repair burned power lines EPA California in flames: wildfires rage across the US state in 2018 A home burns in Redding Getty California in flames: wildfires rage across the US state in 2018 The Carr Fire burns along Highway 299 by the city of Redding AP California in flames: wildfires rage across the US state in 2018 Sunflower Road in Redding burns in the Carr Fire Getty

Others’ homes in the path of destruction were not so lucky. Where some houses stood unscathed, single walls or chimneys were all that remained of others.

“We’re not fighting a fire,” said Jonathan Cox, battalion chief with Cal Fire.

“We’re trying to move people out of the path of it because it is now deadly, and it is now moving at speeds and in ways we have not seen before in this area,” Mr Cox added.

Elsewhere in the state, large fires continued to burn outside Yosemite National Park and in the San Jacinto Mountains east of Los Angeles near Palm Springs.