The largest, the Kincade Fire, had burned more than 54,298 acres in Sonoma County as of Sunday night and forced more than 180,000 people to evacuate. In Southern California, the Tick Fire forced nearly 50,000 to flee their homes, though they have since been allowed to return, according to The Guardian. At the same time, more than two million people have lost power as utility Pacific Gas and Electric (PG&E) implemented preventative outages due to high winds.

"We are deploying every resource available, and are coordinating with numerous agencies as we continue to respond to these fires. It is critical that people in evacuation zones heed the warnings from officials and first responders, and have the local and state resources they need as we fight these fires," Newsom said in the emergency declaration.

Governor @GavinNewsom has declared a statewide emergency due to the effects of unprecedented high-wind events which have resulted in fires and evacuations across the state. https://t.co/mV6PHGiDh4

— Office of the Governor of California (@CAgovernor) October 27, 2019

The Kincade Fire is only five percent contained, according to a Sunday evening update from the California Department of Forestry and Fire Protection (CAL FIRE). It has destroyed 94 structures and damaged 17.

Almost the whole of Sonoma County was impacted by evacuation orders, according to The Guardian.

"This is the largest evacuation that any of us at the Sheriff's Office can remember," the Sonoma County Sheriff's Office tweeted Sunday. "Take care of each other."

Approx 180,000 people under evacuation order due to #KincadeFire. This is the largest evacuation that any of us at the Sheriff’s Office can remember. Take care of each other.

— Sonoma Sheriff (@sonomasheriff) October 27, 2019

Firefighters are now working to prevent the blaze from crossing Highway 101 and burning an area that hasn't seen a wildfire since the 1940s, the Los Angeles Times reported. If it does cross the highway, the fire could threaten agricultural land and old-growth redwoods.

The blaze has been fueled by historic winds that gusted 90 miles per hour Saturday night, The Guardian reported.

"I've been in the business 30 years and I've never seen anything like this," San Francisco National Weather Service forecaster Steve Anderson told The Guardian. "Just the sheer intensity and the sustained duration of the winds. Not only does it carry sparks at least a mile but winds at these speeds pushes embers along the ground," he said.

Fire encroaching the highway on 128, both sides, in Sonoma Co. in Healdsburg. Major wind gusts kicking up and and trees and power lines down everywhere. Updates to come #KincadeFire @NBCNews @TODAYshow pic.twitter.com/0vYvsLTLk2

— Sam Brock (@SamBrockNBC) October 27, 2019

The high winds prompted PG&E to shut off power to 960,000 homes and businesses in Northern California as of Sunday night, The New York Times reported, which means nearly three million people are now in darkness. More than 100,000 additional customers lost power through unplanned outages also caused by high wind.

"[W]hat we do is not popular," PG&E Chief Executive Andy Vesey said during a Sunday night press conference reported by The New York Times. "I will not tell you that people congratulated us. People are angry."

PG&E Has Begun De-energization of Electric Lines for Public Safety - Impacts Will Include Customers in Parts of 38 Counties in Northern and Central California, Historic Wind Event Will Affect 940,000 Customers and Last Through Monday https://t.co/XUqXZEo9k2 pic.twitter.com/nV4LlRdCDa

— PG&E (@PGE4Me) October 27, 2019

The utility said on Twitter that it would begin restoration work for some areas Monday, but might need to institute more planned shutoffs Tuesday and Wednesday because of more high winds.

In Southern California, meanwhile, firefighters made more progress on the Tick Fire, which was 70 percent contained as of Sunday night, NPR reported. The fire has burned 4,600 acres and destroyed or damaged around 50 buildings. Around 1,000 firefighters are still working in the area to make sure the blaze stays contained. Santa Ana winds are forecast to pick up Sunday and Monday, and reach 50 to 70 miles per hour Wednesday and Thursday.

A doorbell camera shows a California family evacuating their home as massive Tick fire surrounded their neighbourhood in Canyon Country, scorching nearby hills and filling the sky with smoke.

ALSO SEE: https://t.co/mAaeRbBwbX pic.twitter.com/OoNBuBnBac

— Globalnews.ca (@globalnews) October 26, 2019

Wildfires are a natural part of many California ecosystems, but the climate crisis has made them larger and more extreme, National Geographic explained. That's because California has warmed by about three degrees Fahrenheit in the past 100 years, compared to the global average of around one degree. Warmer air makes plants drier, which means more fire fuel.

"All else being equal, in a warmer world, vegetation is going to be drier, even in a place like California where vegetation is usually dry by autumn. You can still make it drier," University of California, Los Angeles climate scientist Daniel Swain told National Geographic.

Out of California's 20 largest fires, 15 ignited after 2000.

One Tick Fire evacuee has experienced that change first hand. Brenda Taylor told The Guardian she had evacuated eight or nine times in the past 20 years because of fires.

"It has become normal for us," she said.