Searches were also continuing for those who perished and those who survived the deadliest USA wildfire in a century, ahead of a planned visit by president Donald Trump. Along the way, it's taken down nearly 10,000 homes and killed more than 70 people, making it the deadliest fire in California's history (more than 1,000 people are still missing as well).
Some displaced people prefer to remain outdoors because they want to stay with their pets, which many shelters say they can not accept, or are concerned about losing their privacy, May said.
"The information I am providing you is raw data and we find there is the likely possibility that the list contains duplicate names", he said.
Brown and Newsom said Friday they welcomed the president's visit, and "now is a time to pull together for the people of California".
In Southern California, meanwhile, more residents were being allowed back into their homes near Los Angeles after a blaze torched an area the size of Denver and destroyed more than 600 homes and other structures.
"And it was very warm", the president said after meeting privately with family members and first responders to the attack that killed 12.
Senior fire officials recounted how quickly the blaze spread, complicating evacuation efforts, as Trump studied a huge map spread across a table showing where fires continue to burn.
In a Fox News interview on the eve of his visit, the president repeated his criticism.
The president later toured an operation centers, met with response commanders and praised the work of firefighters, law enforcement and representatives of the Federal Emergency Management Agency.
Trump has always been skeptical of man's role in global warming despite mounting scientific evidence that the burning of fossil fuels is heating the planet and leading to more extreme weather.
With each day another story comes that makes it clearer how chaotic it was on the flame-filled and smoky day that the fire erupted.
At least 300 people who fled the Camp Fire were sheltering on Friday in the flood-prone parking lot of a Walmart in Chico, about 24 km west of where the blaze consumed the mountain town of Paradise on November 8. When Trump stepped out of Air Force One at Beale Air Force Base north of capital city Sacramento, the sun struggled to cut through haze so dense it covered the base like a fog.
At least 71 people have died across Northern California, and authorities are trying to locate more than 1,000 people, though not all are believed missing.
Sheriff Kory Honea pleaded with evacuees to review the list of those reported as unreachable by family and friends and to call the department if those people are safe.
Almost 300 people reported missing have been found alive and the list of missing would fluctuate, he said.
The Republican president was accompanied on his visit by son-in-law Jared Kushner and chief of staff John Kelly.
As they drove through the state, several signs thanked Trump for coming but one called him a "moron".
Nature and humans share blame for the wildfires, but fire scientists are divided as to whether forest management played a major role. "Thousands and thousands of homes got destroyed with no trees around", she said at a shelter set up by the American Red Cross in a church.
In the community of Chico, just west of Paradise, volunteers had erected a tented encampment for others forced from their homes.
Trump said his tour of the devastation from the fires mixed with meeting those affected by the shooting was hard.
The fire was faster than any vehicle was moving, he said.
Rescuers with sniffer dogs have been conducting house-to-house searches.
Up to 2 inches of rain is also expected to fall on southern California this week, where the Woolsey Fire claimed at least three lives, Burke said. It was 55% contained as of early Sunday.