Scorched earth: Record 2 million acres burned in California

Wildfires have burned a record 2 million acres in California this year, and the danger for more destruction is so high the US Forest Service announced on Monday that it was closing all eight national forests in the southern half of the state.

After a typically dry summer, California is parched heading into fall and what normally is the most dangerous time for wildfires. Two of the three largest fires in state history are burning in the San Francisco Bay Area.

More than 14,000 firefighters are battling those fires and dozens of others more around California.

A three-day heat wave brought triple-digit temperatures to much of the state during Labour Day weekend. But right behind it was a weather system with dry winds that could fan fires. The state's largest utility, Pacific Gas & Electric, was preparing to cut power to 158,000 customers in 21 counties in the northern half of the state to reduce the possibility its lines and other equipment could spark new fires.

Randy Moore, regional forester for the Forest Service's Pacific Southwest Region that covers California, announced the national forest closures and said the decision would be re-evaluated daily. Campgrounds at all national forests in the state also were closed.

The wildfire situation throughout California is dangerous and must be taken seriously." Moore said. Existing fires are displaying extreme fire behavior, new fire starts are likely, weather conditions are worsening, and we simply do not have enough resources to fully fight and contain every fire."

Lynne Tolmachoff, spokeswoman for the California Department of Forestry and Fire Protection, or Cal Fire, said it's unnerving" to have reached a record for acreage burned when September and October usually are the worst for fires because vegetation has dried out and high winds are more common.

The previous high was 1.96 million acres burned in 2018. Cal Fire began tracking the numbers in 1987.

While the two mammoth Bay Area fires were largely contained after burning for three weeks, firefighters struggled to corral several other major blazes ahead of the expected winds. Evacuation orders were expanded to more mountain communities on Monday as the largest blaze, the Creek Fire, churned through the Sierra National Forest in Central California.

It was one of many recent major fires that has displayed terrifyingly swift movement. The fire moved 15 miles (24 kilometres) in a single day and burned 56 square miles (145.04 square kilometres).

Debra Rios wasn't home when the order came to evacuate her hometown of Auberry, just northeast of Fresno. Sheriff's deputies went to her ranch property to pick up her 92-year-old mother, Shirley MacLean. They reunited at an evacuation centre.

I hope like heck the fire doesn't reach my little ranch, Rios said. It's not looking good right now. It's an awfully big fire. Mountain roads saw a steady stream of cars and trucks leaving the community of about 2,300 on Monday afternoon.

Firefighters working in steep terrain saved the tiny town of Shaver Lake from flames that roared down hillsides toward a marina. About 30 houses were destroyed in the remote hamlet of Big Creek, resident Toby Wait said.

The Creek Fire had charred more than 114 square miles (295 square kilometers) of timber after breaking out Friday. The nearly 1,000 firefighters on the scene had yet to get any containment. The cause had not been determined.

On Saturday, National Guard rescuers in two military helicopters airlifted 214 people to safety after flames trapped them in a wooded camping area near Mammoth Pool Reservoir. Two people were seriously injured and were among 12 hospitalised.

On Monday night, a military helicopter landed near Lake Edison to rescue people trapped by the Creek Fire, the Fresno Fire Department said on Twitter.

Chief Warrant Officer Joseph Rosamond, the pilot of a Chinook helicopter, said visibility was poor and winds increasingly strong during the three flights he made into the fire zone. His crew relied on night-vision goggles to search for a landing spot near a boat launch where flames came within 50 feet of the aircraft.

The injured, along with women and children, took priority on the first airlift, which filled both helicopters to capacity, he said.

Record-breaking temperatures were driving the highest power use of the year, and transmission losses because of wildfires have cut into supplies. Throughout the holiday weekend, the California Independent System Operator that manages the state's power grid warned of outages if residents didn't reduce their electricity usage. But none had occurred by late Monday afternoon.

In Southern California, crews scrambled to douse several fires that roared to life in searing temperatures, including one that closed mountain roads in Angeles National Forest and forced the evacuation of the historic Mount Wilson Observatory.

Cal Fire said a blaze in San Bernardino County called the El Dorado Fire started Saturday morning and was caused by a smoke-generating pyrotechnic device used by a couple to reveal their baby's gender.

In eastern San Diego County, a fire destroyed at least 10 structures after burning 16 square miles (41.44 square kilometres) and prompting evacuations near the remote community of Alpine in the Cleveland National Forest.

California has seen 900 wildfires since August 15, many of them started by an intense series of thousands of lightning strikes in mid-August. There have been eight fire deaths and more than 3,300 structures destroyed.