5 killed, hundreds of structures destroyed as explosive Carr Fire blazes into Redding, California

The deadly Carr Fire burning in Northern California continues to threaten thousands of homes in Redding, California, after nearly doubling in size on Friday night.

The raging inferno has killed five people since igniting on Monday, July 23, after the mechanical failure of a vehicle, according to Cal Fire.

On Thursday, a bulldozer operator was killed while working to clear vegetation in the path of the blaze, according to a statement from Cal Fire. Three firefighters have suffered burns.

Officials announced early Friday that a Redding city firefighter had died battling the blaze.

Two young children and their great-grandmother died after the flames overtook the family's property, according to the Associated Press (AP).

The wildfire, which has consumed over 83,000 acres with minimal containment, jumped the Sacramento River on Thursday night and headed toward the city of Redding, which is home to nearly 92,000 people.

The erratic nature of the blaze has made the fire difficult to contain.

"[The Carr Fire] was moving all over the place," Mike Mohler, deputy communications director for the California Department of Forestry and Fire Protection, told the Los Angeles Times.

AccuWeather meteorologist and volunteer firefighter Evan Duffey is concerned that the fire can continue to create its own weather and more hazards and strains for firefighters.

"Given the high temperatures in the region reaching well in the 100s and how dry it has been, the chances of extreme fire danger are high," Duffey said.

"Rapidly rising air caused by the extreme heat helps the fire to grow explosively as the fire will create its own wind, as well as fire vortices (firenadoes) and tree crowning (when the leaves get engulfed by flames), even on otherwise calm days."

No relief from the triple-digit heat is expected to come to Redding or the neighboring lower elevations this weekend or next week. In addition to the threat of more evacuations, residents will have to contend with smoke creating poor air quality.

It is best to limit time outdoors and avoid strenuous activities amid the smoky conditions. It is especially important that the elderly, children and those with respiratory issues follow these precautions.

On Friday, Gov. Jerry Brown requested a Presidential Emergency Declaration for Direct Federal Assistance. The request includes Department of Defense air assets and supplies and water for the evacuated residents of Shasta County.

Nearly 5,000 structures are threatened. At least 536 structures have been destroyed, while another 117 were damaged.

Around 37,000 people were under evacuation orders on Friday, according to the AP.

Thousands of Redding residents remain without power. Redding Electric Utility announced that power was shut off to most of north Redding at the request of fire authorities and to maintain system stability.

"Restoration time of the outage is unknown at this point, but please know that Redding Electric Utility is doing all it can to maintain system integrity while keeping the needs of the residents of Redding in mind," the utility said.

A structure burns as the Carr Fire races along Highway 299 near Redding, Calif., on Thursday, July 26, 2018. (AP Photo/Noah Berger)

Mile-long traffic jams were reported on area roadways as people were forced to evacuate quickly.

Many firefighters turned their attention from battling the blaze to helping people flee the raging inferno.

As a precautionary measure, Redding's Mercy Medical Center evacuated all of its neonatal intensive care unit patients on Thursday night. The hospital remains fully operational otherwise.

"Really we're in a life-saving mode right now in Redding," Jonathan Cox, battalion chief with Cal Fire, said via the AP. "We're not fighting a 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."

Over 3,300 total personnel are working to contain the blaze.

Dozens of boats on Whiskeytown Lake, located about 10 miles west of Redding, were burned.

An historic schoolhouse burns as the Carr Fire tears through Shasta, Calif., Thursday, July 26, 2018. (AP Photo/Noah Berger)

Cars scorched by the Carr Fire rest at a residence in Redding, Calif., on Friday, July 27, 2018. (AP Photo/Noah Berger)