Firefighters began gaining ground on wildfires that killed at least 40 people in the past week, the deadliest blazes in California's history, as winds eased and searchers combed charred ruins for more victims with hundreds still missing.
Two of the three most destructive Northern California fires were more than half contained early on Monday, and some residents who fled the flames in hard-hit Sonoma County could be allowed to return home later in the day, officials said.
More than 5,700 structures were destroyed by more than a dozen wildfires that ignited a week ago and consumed an area larger than New York City. Entire neighborhoods in the city of Santa Rosa were reduced to ashes.
"Overall, things are feeling optimistic. We're very cautious about that," said Brad Gouvea, California Department of Forestry and Fire Protection incident commander. "You'd never know it's the middle of October in Sonoma County and have fire behavior like this."
Warm and very dry weather is forecast to continue through Monday, the National Weather Service said. Rain could arrive on Thursday after a cooling trend, it said.
Steve Crawford, a Cal Fire operations chief, said heavy winds had lightened and helped drive flames away from populated areas. Better weather and additional equipment and manpower made available as other fires died down had also helped.
"Before we were kind of chasing the fire," he said.
In another hopeful sign, Mendocino County authorities said power company PG&E would begin flying low in the county to check lines and re-establish power.
About 11,000 firefighters supported by air tankers and helicopters are battling blazes that have consumed more than 217,000 acres (88,000 hectares).
About 50 search-and-rescue personnel backed by National Guard troops were combing tens of thousands of charred acres in Sonoma County for bodies, sheriff's spokeswoman Misti Harris said.
"Once it's safe to go through, we'll search every structure," she said.
Twenty-two people were killed in Sonoma County and 174 were still listed as missing there, although the number has dropped from 235 on Saturday as more people checked in with authorities.
Evacuation orders were lifted for the picturesque Napa Valley resort town of Calistoga, whose 5,000 residents were ordered out by authorities four days ago with fire just miles from downtown.