About 100 people are still missing in the deadliest wildfire in California's history.
Cal Fire firefighters comb through a house destroyed by the Camp Fire in Paradise, California, U.S., November 13, 2018.
Most of the fatalities have been reported from the town of Paradise, population 26,000, in the foothills of the Sierra Nevada mountains about 130 kilometres north of Sacramento.
He has requested portable morgue teams from the USA military, as well as a disaster mortuary crew, additional cadaver dogs and forensic anthropology units.
Second Southern California, Hill Fire, has burned 4,531 acres and was 94 percent contained as of Wednesday morning.
The blaze has left an array of hazards, including trees ready to fall, downed power lines, toxins, and water main and gas leaks.
The intensified effort to locate victims came on the sixth day of a blaze that incinerated more than 7,000 homes and other buildings.
A California firefighter monitors a burning home as the Camp Fire moves through the area on Friday in Magalia, California.
Sarah Gronseth kissed her dog Branch in the bed of a truck in a parking lot, Tuesday, in Chico Calif. Gronseth, a teacher, evacuated some of her high school students in her truck as the fire bore down on the high school in Paradise, Calif.
More than 5,000 firefighters battling the blaze made gains overnight, slowing the flames' advance toward Oroville, a town of about 19,000 people.
"We don't specifically have a time frame", said Cal Fire incident commander Todd Durham.
As for what caused the two deadly fires, that remains under investigation.
Pyne, who was a firefighter before he began researching wildfires in 1977, said US government agencies still don't keep good statistics on civilian casualties from wildfires.
The 42 dead in Northern California surpassed the deadliest single fire on record, a 1933 blaze in Griffith Park in Los Angeles.
To follow ongoing updates from fire and safety officials about the damage to specific areas in the Camp fire, Cal Fire has published a searchable map that includes photos of affected areas, as work crews inspect neighborhoods. She says the company sent a report to state agencies.
'The humidity will go way up - it will help lay down the fire and help the fire crews to make faster progress on it'. Angry residents say they received no official warning to flee and instead learned late of the danger when they smelled smoke or saw flames, or from family or neighbors - then faced gridlocked traffic, surrounded by flames, along the town's few exit routes.
President Donald Trump has requested a major disaster declaration for California, after taking flack for blaming the devastation on poor forestry management over the weekend.