The twin fires in Mendocino and Lake counties flared up late Sunday, forcing the new evacuations from the 4,700-resident town of Lakeport and other communities near Clear Lake, about 120 miles (195 kilometers) north of San Francisco. The blazes have destroyed six homes and threaten 10,000 others. So far, the flames have blackened 87 square miles (225 square kilometers), with minimal containment.
Those fires were among 17 burning across the state, where fire crews were stretched to the limit.
At midday Monday, Lake County Sheriff's Lt. Corey Paulich put the number of people under evacuation orders at 14,000, up from a previous estimate of 10,000. Another 1,000 people have been displaced in neighboring Mendocino County.
Paulich said residents have been heeding evacuation orders because they have seen the destruction caused by past wildfires, which have destroyed thousands of homes and killed at least four people since 2015.
To the north, near Redding, California, where an unpredictable blaze killed six people, a man whose wife and two great-grandchildren were among the dead said he did not receive any warning to evacuate.
Ed Bledsoe told CBS News he did not know his home was in danger when he left his wife, Melody, and the 4- and 5-year-old children to run an errand on Thursday.
"If I'd have any kind of warning, I'd have never, ever left my family in that house," Bledsoe said.
Bledsoe said he received a phone call from his wife 15 minutes after he left saying he needed to get home because the fire was approaching. He said one of the children told him the blaze was at the back door. When he tried to return, the road was blocked and flames prevented him from returning on foot.
Shasta County Sheriff Tom Bosenko told the network there's an investigation into whether the Bledsoe home received a warning call or a knock on the door. The sheriff said there is evidence that door-to-door notifications were made in the area.
Crews handling the blaze near Redding struck a hopeful tone for the first time in days as the massive fire slowed after days of rapid expansion. As of Monday, the Redding fire had destroyed 723 homes.
"We're feeling a lot more optimistic today as we're starting to gain some ground rather than being in a defensive mode on this fire all the time," said Bret Gouvea, the California Department of Forestry and Fire Protection's incident commander on the blaze around Redding, a city about 230 miles (370 kilometers) north of San Francisco.
Authorities were also investigating at least 18 missing-persons reports, though many of them may simply be people who have not checked in with friends or family, police said.
The Carr Fire that threatened Redding - a city of about 92,000 people - was ignited by a vehicle a week ago about 10 miles (16 kilometers) west of the city. On Thursday, it swept through the historic Gold Rush town of Shasta and nearby Keswick, fueled by gusty winds and dry vegetation. It then jumped the Sacramento River and took out subdivisions on the western edge of Redding.
Redding Police Chief Roger Moore kept up a round-the-clock work schedule despite learning that his home was one of those destroyed. He was helping evacuate people from his River Ridge neighborhood in western Redding when the flames became unbearable.
"I saw everything around it ignite, and I go, 'It's gone,'" Moore said.
At least one person was arrested on suspicion of stealing from evacuated homes, and authorities were keeping watch for other potential looters, said Deputy Travis Ridenour, whose home also burned.
"Lost our house like so many others," Ridenour wrote on Facebook. "Still out watching over the ones still standing. No looting on my watch."
After days of fortifying the areas around Redding, fire crews were increasingly confident that the city would escape further damage. The fire had not grown inside the city limits since Saturday, Gouvea said.
Some evacuees were frustrated because they didn't know whether their homes were still standing. Some evacuated neighborhoods were reopened Monday but many remained closed as firefighters mopped up.
Fed up, Tim Bollman hiked 4 miles (6 kilometers) Sunday to check on the Redding home he built for his wife and two sons 13 years ago. He found rubble.
"There's not even anything to pick up," he said. "It's completely gone."
Keswick, a mountain town of about 450 people, was reduced to an ashy moonscape of blackened trees and smoldering ruins.
Meanwhile, officials said a second firefighter died fighting a huge blaze to the south near Yosemite National Park. Brian Hughes, 33, was struck by a tree while removing brush and other fuel near the so-called Ferguson Fire's front lines, officials said.
Originally from Hawaii, Hughes had been with California's Arrowhead Interagency Hotshots for four years and reached the rank of captain. Earlier this month, firefighter Braden Varney was killed when the bulldozer he was operating overturned while he was fighting the flames near the national park.
Yosemite Valley, the heart of tourism in the park, will remain closed until Aug. 3.
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