California firefighters battled through the night to contain a fast-moving wildfire driven by high winds that was threatening to engulf thousands of buildings.

Firefighters work during the Tick Fire on October 24, 2019 in Canyon Country, California.
Firefighters work during the Tick Fire on October 24, 2019 in Canyon Country, California. GETTY IMAGES NORTH AMERICA / MARIO TAMA

Around 40,000 people were told to flee the Tick Fire, which was raging across 4,000 acres (1,600 hectares) just north of Los Angeles.

Structures burn at a vineyard during the Kincade fire near Geyserville, California on October 24, 2019
Structures burn at a vineyard during the Kincade fire near Geyserville, California on October 24, 2019 AFP / Josh Edelson

The blaze broke out early Thursday afternoon, burning several homes and structures and forcing the closure of a major highway and a number of roads, as some 500 firefighters backed by air tankers and helicopters battled the flames.

Irene Navarro uses a garden hose to water down vegetation around her property as the Tick Fire burns nearby on October 24, 2019
Irene Navarro uses a garden hose to water down vegetation around her property as the Tick Fire burns nearby on October 24, 2019 GETTY IMAGES NORTH AMERICA / MARIO TAMA

There were no immediate reports of injury.

A home burns during the Kincade fire near Geyserville, California on October 24, 2019
A home burns during the Kincade fire near Geyserville, California on October 24, 2019 AFP / Josh Edelson

"We are urging everybody to evacuate at this time," a fire department spokesman said.

This week's California fires have erupted as the state is still recovering from deadly wildfires in 2017 and 2018 that killed more than 100 people
This week's California fires have erupted as the state is still recovering from deadly wildfires in 2017 and 2018 that killed more than 100 people AFP / Josh Edelson

The fire erupted as much of the state was under a red-flag warning because of gusty winds, high temperatures and low humidity which make perfect conditions for wildfires.

In northern California wine country, some 2,000 people were ordered to evacuate after a brush fire erupted late Wednesday, quickly growing from a blaze of a few hundred acres into a 16,000-acre inferno, California fire officials said.

California's Tick fire broke out early Thursday afternoon, burning homes and structures and forcing the closure of a major highway
California's Tick fire broke out early Thursday afternoon, burning homes and structures and forcing the closure of a major highway GETTY IMAGES NORTH AMERICA / MARIO TAMA

About 500 responders battled the fire fed by wind gusts topping 70 miles per hour (110 kilometers per hour).

Around 40,000 people were told to flee the Tick Fire, which was raging across 4,000 acres (1,600 hectares) just north of Los Angeles
Around 40,000 people were told to flee the Tick Fire, which was raging across 4,000 acres (1,600 hectares) just north of Los Angeles GETTY IMAGES NORTH AMERICA / MARIO TAMA

Mandatory evacuation orders were issued for the community of Geyserville and nearby vineyards after the fire started in a mountainous area and quickly spread, crossing a highway and moving toward homes, the Sonoma County Sheriff's Office said.

Mandatory evacuation orders were issued for the Californian community of Geyserville and nearby vineyards after a fire started in a mountainous area and quickly spread
Mandatory evacuation orders were issued for the Californian community of Geyserville and nearby vineyards after a fire started in a mountainous area and quickly spread AFP / Josh Edelson

"If you're in Geyserville, leave now," the sheriff's office advised, citing an extraordinary threat to life and property.

LA County firefighters battled through the night as the fast-moving Tick fire threatened some 10,000 structures
LA County firefighters battled through the night as the fast-moving Tick fire threatened some 10,000 structures GETTY IMAGES NORTH AMERICA / MARIO TAMA

Winds out of the north were driving the fire as firefighters struggled to save homes.

California's fires have been fueled by years of drought and dry vegetation
California's fires have been fueled by years of drought and dry vegetation AFP / Josh Edelson

By early Thursday evening, the fire was five percent contained and several structures had burned, fire officials said.

The blaze -- 75 miles north of San Francisco -- came amid official warnings that much of northern California and parts of the south were under imminent threat of fires into Friday because of blustery, dry weather and high temperatures.

AFPTV /

Another brush fire in San Bernardino County, about 60 miles east of Los Angeles, also prompted evacuation orders as it quickly burned 75 acres.

Hurried departures

Power was cut to some 180,000 customers in the northern part of the state Thursday and similar preemptive shutoffs affected thousands of customers further south due to conditions that are ripe for wildfires.

Power companies warned that additional power cuts could be ordered to reduce the risk of accidental fires.

The strong winds in the north were expected to subside Friday but are forecast to pick up again on Sunday, the National Weather Service warned.

Many residents of Geyserville said they barely had time to gather their belongings as the monster fire quickly approached the town, with embers igniting fires throughout the region.

"We thought we were a couple of miles from the fire," Dwight Monson, 68, told the Los Angeles Times. "But guess what -- the winds."

He said by the time his family got in their cars and escaped to the valley below, the flames were on the edge of their ranch.

PG&E, the state's biggest utility, said in a statement that it had informed regulators that a jumper on a transmission tower near where officials said the fire had started was broken.

The company -- which has been held responsible for numerous wildfires in the state -- said that even though power to nearly 28,000 customers in Sonoma County, including Geyserville, had been shut down on Wednesday, some of the high-voltage transmission lines were still operating when the fire broke out.

"We relied on the protocol and we still, at this point, do not know what exactly happened," PG&E CEO and president Bill Johnson told a news conference.

This week's fires have erupted as the state is still recovering from deadly wildfires in 2017 and 2018 that killed more than 100 people.

"This is an emotional time for many people," Sonoma County Sheriff Mark Essick told a news conference Thursday. "It's only been two years since the fires that devastated our community. For many this will be a very stressful and anxious time."