Tag Archives: Wildfires

California’s PG&E customers face new round of mass outages

By Steve Gorman

(Reuters) – Power supply to about 150,000 California homes and businesses is expected to be shut off on Wednesday, in the latest precautionary outage planned by utility giant PG&E against wildfire risks posed by extremely dry, windy weather.

Late on Tuesday, the company said it would go forward with the shutoffs from 9 a.m., with some customers likely to be unaffected until late afternoon.

The mass blackout will be the fourth imposed by Pacific Gas & Electric Co, a unit of PG&E Corp, since Oct. 9, when about 730,000 customers were left in the dark as a preventive measure called a “public safety power shutoff.”

A precautionary outage initiated on Oct. 23 hit an estimated 179,000 customers, while another run in phases from Oct. 26 through Nov. 1 affected a record 941,000 homes and workplaces, according to PG&E.

The latest mass shutoff is likely to run through midday Thursday and could ultimately affect 181,000 customers across portions of 16 counties in northern and central California, PG&E spokeswoman Katie Allen told Reuters.

The outages are a response to forecasts for humidity levels to drop and heavy desert winds to howl through the region, a scenario that strengthens the risk of wildfires ignited by downed power lines.

Wind gusts will reach between 35 mph and 55 miles (56 km to 89 km), with isolated areas of higher gusts, National Weather Service forecasters said.

PG&E, California’s largest investor-owned utility, filed for bankruptcy in January, citing $30 billion in civil liability from major fires sparked by its equipment in 2017 and 2018.

That tally includes the state’s deadliest fire on record, the Camp fire that killed 85 people in and around the northern town of Paradise last year.

The recent wave of precautionary shutoffs has provoked criticism from Governor Gavin Newsom, state regulators and consumer activists as being too broad.

Newsom blames PG&E for doing too little to properly maintain and secure its power lines against wind damage and has accused the utility of poorly managing some of the mass outages.

Utility executives have acknowledged room for improvement while defending the sprawling cutoffs as a matter of public safety.

The California Public Utilities Commission recently opened a formal investigation of whether PG&E and other utilities violated energy regulations by cutting power to millions of residents for days at a time during periods of high winds.

Even as northern California braced for heightened wildfire risks, parts of Southern California, including Los Angeles, were expected to be doused by their first substantial showers after months of little or no rainfall.

(Reporting by Steve Gorman in Culver City, Calif.; Additional reporting by Rich McKay in Atlanta; Editing by Sonya Hepinstall and Clarence Fernandez)

New front opens in Australian bushfires, power cut to thousands

By Colin Packham

SYDNEY (Reuters) – Electricity firms cut off power to thousands of people, more than 100 schools were closed and residents in high risk regions sought shelter on Wednesday as Australia’s devastating bushfires opened up a new front.

Australia has been battling wildfires across several states for days, endangering thousands of people in many communities. Blazes so far this month have killed at least four people, burnt about 2.5 million acres (1 million hectares) of farmland and bush and destroyed more than 300 homes.

On Wednesday, a fresh battle line was drawn as 50 fires sprung up in South Australia state, where officials lifted the fire danger warning to “catastrophic” as temperatures passed 42 degrees Celsius (107.6 degrees Fahrenheit).

A catastrophic warning means that should a fire start, it will not be possible for firefighters to control it, given the weather conditions.

“From sunrise until well past midnight, this state is going to experience very difficult fire conditions,” Brenton Eden, assistant chief officer at the South Australian Country Fire Service, told Australian Broadcasting Corp radio.

More than 600 firefighters attended to incidents across the state on Wednesday, and most were expected to keep battling fires throughout the night.

As some of fires approached electricity transmission lines, provider SA Power Networks cut power to over 12,000 customers.

With strong winds stoking blazes, authorities put residents near four of the fires on high alert to flee in case the flames spread rapidly.

“This is the worst of the weather from a fire behaviour point that we will have seen,” Eden told reporters in Adelaide, the state capital.

Australia is prone to bushfires in its dry, hot summers, but the recent series of fierce blazes have been sparked early, in the southern spring, after a three-year drought that has left much of the country tinder-dry.

While the immediate threat was in the south on Wednesday, firefighters continued to battle about 100 fires that have been burning for several days across Australia’s east coast.

Sydney, the country’s most populous city with around 5 million residents, was covered with thick smoke for the second day running. Health officials on Tuesday warned people in the harbour city to stay inside as the smoke reached hazardous levels.

(Reporting by Colin Packham; editing by Jane Wardell and Gerry Doyle)

Devastating bushfire conditions to worsen in Australia

By Lidia Kelly

MELBOURNE (Reuters) – Rising temperatures, lightning strikes and erratic winds are set to fan wildfires in Australia in the week ahead, officials said on Sunday, with emergency crews already working day and night to contain more than 130 blazes.

The state of New South Wales, where 367 homes have been lost in the past week, reported 56 fires burning with about half yet to be contained, fire services said.

A heatwave forecast for this week is expected to heighten dangers in the state. The fires have already claimed four lives across the country’s east coast.

“We are expecting to see a worsening of conditions, particularly as we start heading into Tuesday and then continuing through Wednesday and Thursday again,” New South Wales Rural Fire Service Commissioner Shane Fitzsimmons said.

Crews from interstate and New Zealand were expected to bolster firefighters’ efforts from Monday in combating the blazes and to relieve volunteers.

Australia’s bushfires are a common and deadly threat but the early outbreak this year in the southern spring has already claimed several lives and destroyed hundreds of homes.

Authorities in Queensland issued emergency warnings for part of the state, where nearly 80 fires were burning on Sunday and as the region braced for more hot and dry weather in the week ahead.

“Until we get significant rainfall, the fires will not go out,” Queensland’s acting Fire and Emergency Commissioner, Mike Wassing, said in televised remarks.

(Reporting by Lidia Kelly; Editing by Daniel Wallis and Sam Holmes)

California winds slacken, helping firefighters control blazes

California winds slacken, helping firefighters control blazes
(Reuters) – Winds that have fanned California’s wildfires have calmed, helping firefighters contain blazes that have destroyed homes and forced mass power outages since late last month.

“We’ve really seen the end of it,” said Patrick Burke, a meteorologist with the National Weather Serices’s (NWS) Weather Prediction Center in College Park, Maryland.

“The winds have calmed down and this is nothing but good news,” he said. “It remains extremely dry to so more (fire) spreading is possible, but there are no elevated fire concerns.”

The state’s largest fire, dubbed the Kincade fire in Sonoma County’s tourist-popular wine country, was 78% contained late on Sunday at the fire department’s last update.

It burned nearly 80,000 acres (32,375 hectares) and destroying more than 370 structures since it started on Oct. 23, officials said.

Firefighters working overnight into Monday to contain a Southern California wildfire made significant headway, containing 70% of the blaze with the aid of cooler weather and lighter winds after it burned thousands of acres of dry brush and farmland.

The Maria Fire, which broke out on Thursday near the community of Santa Paula about 70 miles (110 km) northwest of downtown Los Angeles, had destroyed two structures and burned more than 9,400 acres (3,800 hectares), the Ventura County Fire Department said on Sunday.

Firefighters paid close attention to the county’s avocado and citrus orchards threatened by the flames, the Los Angeles Times reported.

Evacuation orders in Ventura County were lifted on Saturday, when the fire department said the blaze was 20% contained. More than 10,000 residents had previously been told to evacuate at the peak of the fire’s rapid spread.

Southern California Edison has told state authorities that 13 minutes before the fire started, it began to re-energize a circuit near where flames first erupted, said a spokesman for the utility, Ron Gales.

Southern California Edison had shut off power in the area because of concerns that an electrical mishap could spark a wildfire. The utility and fire officials have said the cause of the blaze is still under investigation.

Some smaller fires have broken out, including the so-called Ranch fire in Tehama County, which has burned about 470 acres of brush and chaparral, with some evacuations advised late Sunday but none ordered, officials said. No structures were reported damaged.

(Reporting by Rich McKay, additional reporting by by Gabriella Borter; Editing by William Maclean)

Easing winds give firefighters a break in California wildfire battle

Easing winds give firefighters a break in California wildfire battle
By Rollo Ross

LOS ANGELES (Reuters) – Fierce, dry Santa Ana winds off the Southern California mountains eased early on Friday, helping firefighters make progress in corralling major wildfires that have displaced thousands of residents.

A fresh spate of wildfires had roared to life on Thursday in hilly neighborhoods outside Los Angeles, destroying homes and forcing yet more evacuations before the Santa Ana winds lost their punch overnight.

The Maria Fire swelled to torch more than 8,000 acres (3,240 hectares) of Ventura County after igniting on Thursday evening, threatening some 1,800 homes and other structures, according to the county fire department. About 7,500 residents were ordered to find lodgings elsewhere for Halloween night, and dozens of schools were closed on Friday.

East of Los Angeles, the Hillside Fire scorched more than 200 acres (80 hectares) of the San Bernardino National Forest, burning residential areas in the north end of the city of San Bernardino, destroying at least six homes on Thursday, the county’s fire department said.

Crews managed to carve containment lines around 50% of the fire’s perimeter. No injuries were reported.

The dry Santa Ana winds that howl down from the mountains every autumn in Southern California were forecast to abate on Friday, although there could still be fire-fuelling gusts of 15 to 20 miles per hour (25 to 32 km per hour), the National Weather Service said.

A fire that erupted early on Monday near the famed Getty Center art museum in west Los Angeles threatened thousands of homes in some of the city’s wealthiest neighborhoods but was largely suppressed, with containment listed at 40%.

Residents were allowed to return to most of the 10,000 homes that had been ordered evacuated. The museum emerged unscathed, but about a dozen dwellings were lost in the 745-acre (301-hectare) Getty fire and two firefighters were injured.

About 30 miles (50 km) to the northwest, a fire raged to the edge of the hilltop Ronald Reagan Presidential Library & Museum in Ventura County’s Simi Valley on Wednesday, threatening thousands of homes, but was 60 percent contained early on Friday. Firefighters doused flames before they could reach the library.

Pacific Gas and Electric Co  acknowledged last week that the Kincade Fire, a blaze that charred 77,000 acres (31,160 hectares) of Sonoma County wine country north of San Francisco, started last week near a damaged PG&E transmission tower at about the time a high-voltage line on that tower malfunctioned.

That blaze has burned more than 77,700 acres and destroyed at least 349 homes and other structures but was listed as 65% contained on Thursday evening.

PG&E, which over this past weekend began shutting off power to 940,000 California customers to guard against the risk of an electrical mishap sparking a blaze, said late on Thursday it had restored electricity to virtually all customers.

(Additional reporting by Jonathan Allen in New York, Alex Dobuzinskis in Culver City, California, and Rich McKay in Atlanta; Editing by Mark Heinrich and Jonathan Oatis)

Homes destroyed, hundreds more evacuated as Los Angeles wildfires spread

Fire is seen in Simi Valley, California, U.S. October 30, 2019, in this social media image. Courtesy of Twitter @415FirePhoto/Social Media via REUTERS.

Homes destroyed, hundreds more evacuated as Los Angeles wildfires spread
By Omar Younis

SIMI VALLEY, Calif. (Reuters) – More wildfires ignited near Los Angeles on Thursday, destroying homes and forcing evacuations, as the region faced a second day of gusting desert winds that have fanned flames and displaced thousands of people.

The fast-moving Hillside Fire grew to 200 acres (80 hectares) and was starting to consume homes near scrub-covered slopes in San Bernadino, east of Los Angeles, according to the San Bernadino County Fire Department.

At least six homes were destroyed or damaged and about 1,300 people had been ordered to evacuate. A helicopter and a small plane dropped water and retardant on the flames, according to Chris Prater, a fire department spokesman. A smaller brush fire was also reported in Jurupa Valley.

“The winds have probably been the biggest factor promoting this fire spread,” he said.

The region’s Santa Ana winds have been so extraordinarily dry, powerful and prolonged that the National Weather Service created a new alert level, issuing an “extreme red flag warning” through Thursday evening in Los Angeles and Ventura counties.

Two other major fires have charred the region since the start of the week.

The Getty Fire broke out near the Getty Center art museum in Los Angeles on Monday morning, burning chaparral up and down the mountain slopes around a major highway.

Officials ordered the evacuation of more than 10,000 homes in some of the city’s richest neighborhoods, although they began allowing some people to return on Wednesday as about 40% of the 745-acre (300-hectare) fire was brought under control.

The Easy Fire ignited early on Wednesday, sending flames racing up to the walls of the Ronald Reagan Presidential Library atop a mountain in Ventura County’s Simi Valley northwest of Los Angeles. Some 30,000 residents were ordered to evacuate, along with an unknown number of horses in an area that is known for its ranches. County schools remained closed on Thursday.

Officials at the Getty Center and the Reagan Library were confident both complexes would be unscathed, thanks to various fire-prevention systems. These include, in the case of the Reagan Library, an annual visit by a herd of goats that eats away the surrounding flammable scrub. On Wednesday, helicopters doused the area around the library with water.

No injuries have been reported in the fires, although at least a dozen homes in Los Angeles have burned down.

The Santa Ana winds arrive in the autumn, sending hot, dry air down from the mountains out to the Southern California coast. Gusts of 65 miles per hour (105 kilometers per hour) were recorded in mountainous areas around Los Angeles, and more powerful winds were forecast for Thursday morning.

Tens of thousands of people in the region were without power after a precautionary shutdown by the Pacific Gas & Electric Co <PCG.N>.

Investigators say the Getty fire was likely caused by a broken tree branch that was blown into power lines during high winds on Monday morning.

NORTHERN CALIFORNIA FIRE

In northern California, firefighters have been fighting the 76,000-acre (30,760-hectare) Kincade Fire in Sonoma County’s wine country for more than a week. That blaze has destroyed at least 189 homes and other structures but was listed as 30% contained on Wednesday.

PG&E acknowledged last week that the Kincade Fire started near a damaged transmission tower at about the time a live high-voltage line on that tower malfunctioned.

The company filed for bankruptcy in January, citing $30 billion in potential liability from a series of deadly fires sparked by its equipment in 2017 and 2018.

As many as 190,000 people were displaced at the height of the Kincade Fire, but some evacuation orders have since been lifted.

(Reporting by Omar Younis in Simi Valley, California, and Jonathan Allen in New York; Writing by Jonathan Allen; Editing by Scott Malone, Bernadette Baum and Frances Kerry)

Dangerous dry winds forecast to sweep into fire-plagued Los Angeles

Dangerous dry winds forecast to sweep into fire-plagued Los Angeles
By Steve Gorman

LOS ANGELES (Reuters) – Extraordinarily dry, prolonged Santa Ana winds are predicted to gust through Southern California on Wednesday, prompting strong warnings from meteorologists as residents contend with damaging wildfires.

It was a daunting forecast for firefighters battling a 600-acre (240-hectare) blaze consuming the shrub-covered hills near the Getty Center museum in Los Angeles that has displaced thousands of residents. A new brush fire erupted on Wednesday morning in nearby Simi Valley in Ventura County, prompting officials to order mandatory evacuations in the suburbs around the Ronald Reagan Presidential Library.

The National Weather Service issued an “extreme red flag” warning for wildfires in Los Angeles and Ventura counties.

“I don’t know if I’ve ever seen us use this warning,” said forecaster Marc Chenard. “It’s pretty bad.”

Statewide, the weather service issued warnings of dangerous fire weather conditions covering more than 34,000 square miles (88,000 square km), encompassing some 21 million people. Scientists have linked an increase in frequency and intensity of wildfires to climate change.

The Santa Ana winds are a regional weather phenomenon that sends gusts westward off the desert out to the Southern California coast. They are forecast to reach sustained speeds of 50 to 70 miles per hour (80 to 110 km per hour) on Wednesday and Thursday, raising the risk of sparks and embers being whipped into fresh wildfires in unburned areas.

Los Angeles Fire Chief Ralph Terrazas said extremely high winds could also force the grounding of water-dropping helicopters, a vital component of the firefighting arsenal.

City arson investigators say the Getty fire was likely caused by a broken tree branch being blown into power lines during high winds on Monday morning.

Electricity remained cut off to roughly half a million homes and businesses in Northern and Central California on Tuesday as a precaution by the state’s largest utility.

Governor Gavin Newsom has accused utilities of failing to adequately modernize and safely maintain their power systems.

GAINING GROUND

An army of some 1,100 firefighters battled the Getty fire Tuesday in a narrow window of slower winds. By early Wednesday, crews had managed to contain about 15 percent of the blaze.

In Northern California, where firefighters struggled for a sixth day against a 76,000-acre (30,760-hectate) blaze in Sonoma County’s winemaking region, high-wind forecasts prompted Pacific Gas and Electric Co <PCG.N> to impose a new round of blackouts for nearly 600,000 homes and business.

That included about 400,000 customers blacked out in a power shutoff that PG&E instituted days earlier, the company said.

Early Wednesday, PG&E announced that it had restored about 73 percent of the 970,000 or so customers affected in earlier shutoffs.

Utilities serving Southern California’s more highly urbanized areas have imposed smaller-scale outages.

PG&E has been implicated in the Sonoma County blaze, dubbed the Kincade fire. The utility acknowledged last week that the Kincade fire broke out near a damaged PG&E transmission tower at about the time a live high-voltage line carried by that tower malfunctioned.

The company filed for bankruptcy in January, citing $30 billion in potential liability from a series of deadly fires sparked by its equipment in 2017 and 2018.

Citing progress made against the Kincade fire, Newsom said the number of evacuees in Northern California had diminished from 190,000 at the peak of that blaze to 130,000 on Tuesday.

Property losses from the Kincade, listed at 15% contained, were put at 189 homes and other structures, double Monday’s tally.

The size of the Getty fire’s evacuation zone was reduced by roughly 3,000 homes on Tuesday but residents of about 7,000 homes remained displaced, fire officials said. At least a dozen homes have been destroyed so far.

(Reporting by Steve Gorman in Los Angeles and Jonathan Allen in New York; additional reporting by Rollo Ross in Los Angeles and Rich McKay in Atlanta; Editing by Angus MacSwan and Jonathan Oatis)

Fast-moving fires near Los Angeles force more than 40,000 to flee

Fast-moving fires near Los Angeles force more than 40,000 to flee
By Stephen Lam

GEYSERVILLE, Calif. (Reuters) – California firefighters on Friday sought to take advantage of a brief lull in high winds behind fast-moving wildfires that forced the evacuation of more than 40,000 residents north of Los Angeles and another 2,000 in the state’s wine country.

With winds abating, crews worked overnight to battle a newly-started fire about 40 miles (64 km) north of Los Angeles that was threatening 10,000 homes and businesses, the Los Angeles County Fire Department said.

Officials warned residents not to be deceived by the overnight lull, as the National Weather Service (NWS) forecast a pickup in hot, dry winds by Friday morning with gusts of 45 to 55 mph (72 to 89 kph) and temperatures above 90 degrees Fahrenheit (32 degrees Celsius).

“Let’s not let our guard down,” said Los Angeles County Supervisor Kathryn Barger. She told a press conference 40,000 to 50,000 residents had been forced from homes by late Thursday with “numerous” structures destroyed.

California’s wildfires generally erupt in the fall as hot, dry Santa Ana winds blow westward from the desert after a dry summer. Last year, at least 85 people died in one of the deadliest such fires, known as the Camp Fire in Butte County.

The so-called Tick Fire, which began Thursday afternoon just outside the city of Santa Clarita, had consumed about 4,000 acres and was only 5 percent contained as of late Thursday, the county fire department said.

Another burst of high winds was expected over the weekend, said Marc Chenard, a meteorologist with the NWS’s Weather Prediction Center in College Park, Maryland.

To the north, where firefighters were battling a smattering of blazes, crews had restored power to most of the nearly 200,000 homes and businesses intentionally left in the dark because of risk of high winds downing electrical lines.

DAMAGED ELECTRICITY TOWER

Power had been shut off to residents from the Sierra Foothills to the North Bay and San Mateo and Kern counties.

But by early Friday, Pacific Gas and Electric Co (PG&E) said it restored power to most of its 178,000 customers in portions of 18 counties shut off, and it expected to have the rest reconnected by the end of the day.

While the cause of the worst of the blazes, the Kincade Fire in Sonoma County, has not been determined, it appears to have erupted near the base of a damaged high-voltage transmission tower owned by PG&E.

The company, a unit of bankrupt holding company PG&E Corp <PCG.N>, said in an “electric safety incident” report to the California Public Utilities Commission that one of its power lines malfunctioned at about the time and in the location of the fire’s origin on Wednesday night.

Neither PG&E nor the commission said whether the damaged tower or the malfunctioning transmission line attached to it were suspected of igniting the blaze, which has destroyed about a dozen homes and other structures.

The California Department of Forestry and Fire Protection (Cal Fire) said it is investigating. It listed the same place and time of origin for the fire as the tower incident reported by PG&E.

By early Friday, the Kincade fire had scorched about 16,000 acres and forced some 2,000 people to flee their homes, Cal Fire said.

No injuries have been reported and only 800 acres had been contained, it said.

Mandatory evacuations began with the 900 residents of historic Geyserville on Thursday, and continued climbing to 2,000 across Sonoma County through the day, the county sheriff’s office said.

Geyserville and nearby Healdsburg, part of which was under an evacuation warning, are hubs of upscale restaurants, wine-tasting rooms, inns and shops surrounded by hills dotted with vineyards about 75 miles (120 km) north of San Francisco.

(Reporting by Stephen Lam in Geyserville; Additional reporting by Peter Szekely in New York, Subrat Patnaik in Bengaluru and Rich McKay in Atlanta; Editing by Scott Malone and Andrew Cawthorne)

More than half a million Californian customers may face power outages

More than half a million Californian customers may face power outages
By Subrat Patnaik and Rich McKay

(Reuters) – More than half a million homes and businesses in California could lose power this week as utilities including Pacific Gas & Electric (PG&E)  and Southern California Edison(SCE) cut off electricity as a preventive measure against wildfires.

Over 308,000 customers in seven counties, including Los Angeles, San Bernardino and Ventura in southern California, are under the Public Safety Power Shutoffs (PSPS) consideration, Southern California Edison said.

Shutoffs from SCE could start early Thursday.

Meanwhile, PG&E has shut off power in 15 counties, affecting about 178,000 customers in those areas. The company said additional power shutoffs for parts of San Mateo County and Kern County were expected to begin at about 1 a.m. (0800 GMT) on Thursday, affecting more than 1,000 customers.

San Diego Gas & Electric Co has also identified more than 41,000 customers under PSPS consideration, but has not implemented any power shutoffs on Thursday.

Forecaster Marc Chenard said the worst of the winds would arrive on Thursday afternoon and into Friday.

“It looks like at its worst, southern California will see wind gusts of 55 mph. Down in some of the coastal areas the winds could reach 75 mph later today,” he said.

Power lines could be knocked down and start fires among dry trees and vegetation, according to earlier forecasts.

Bankrupt Californian power producer PG&E cut off electricity to more than 730,000 homes and workplaces in northern California earlier this month to try to reduce wildfire risks posed by extremely windy and dry weather.

Chenard added that northern California could experience dangerous wind gusts of up to 45 mph. “This is not going to abate until at least this weekend.”

Wildfires were also growing through the night in Sonoma County, about 65 miles north of San Francisco, which is popular with tourists visiting wine-producing areas in California.

By early Thursday morning, the fire had grown to 7,000 acres, and more evacuations were ordered overnight in and near Geyserville, officials said. No injuries had been reported.

Evacuation warnings were issued before midnight in some communities as the wind-driven fires moved toward tourist towns including Healdsburg, officials said.

(Reporting by Subrat Patnaik in Bengaluru and Rich McKay in Atlanta; Editing by Dale Hudson)

Deadly Los Angeles wildfire burns with subdued fury after change in weather

By Steve Gorman

LOS ANGELES (Reuters) – Firefighters have tightened their grip on a deadly Los Angeles wildfire burning with subdued fury on Sunday after extremely dry desert winds that had stoked the flames gave way to moister, gentler breezes blowing in from the Pacific.

The so-called Saddleridge fire, which erupted Thursday night and raced across the northern edge of L.A.’s San Fernando Valley, had scorched nearly 8,000 acres (3,237 hectares) by Sunday but was mostly confined to foothills and canyons away from populated areas, fire officials said.

As of Sunday morning, firefighters had managed to carve containment lines around 41% of the fire’s perimeter, more than double the containment level reported a day earlier as authorities lifted all remaining evacuation notices.

At the height of the blaze on Friday, authorities had ordered the evacuation of some 23,000 homes, comprising about 100,000 people, as flames invaded several communities in northern Los Angeles.

One man who stayed put in an effort to defend his own property from the flames suffered a fatal heart attack, and three firefighters out of some 1,000 assigned to the blaze sustained minor injuries, authorities said.

Thirty-two homes and other structures were destroyed or damaged.

The last two of several emergency evacuation shelters set up during the blaze were closed on Sunday, the American Red Cross said.

A shift in wind patterns was a key factor in the improved fire outlook over the weekend.

Initially stoked by gale-force Santa Ana winds blowing in from the desert east of the city, the blaze had raced through dry brush and chaparral at the rate of 800 acres per hour at the outset.

On Saturday, however, lighter winds laden with greater moisture began blowing in from the ocean, helping fire crews to halt advancing flames and extend containment lines, city fire spokesman Nicholas Prange said.

“With the winds being reduced, fire behavior is less severe, so firefighters are advancing around the perimeter,” he told Reuters by phone. “We can make more headway with containment than before.”

Smoke from the blaze lingered over much of Los Angeles, leading the South Coast Air Quality Management District to issue an advisory for unhealthy air quality for the San Fernando Valley, as well as the Santa Clarita Valley to the west and the San Gabriel Mountains to the north.

The cause of the blaze was under investigation. Fire officials said they were investigating witness reports in local media linking the fire to a power transmission line.

The Saddleridge was the largest among a spate of wildfires across California that burned a total of nearly 160,000 acres (64,000 hectares) and destroyed 134 structures in recent days, according to the California Department of Forestry and Fire Protection.

A separate, smaller fire east of Los Angeles in Riverside County killed two people and destroyed dozens of homes last week. That blaze began when burning refuse dumped by a garbage truck ignited dry vegetation on the ground.

(Reporting by Steve Gorman in Los Angeles; Additional reporting by Daniel Trotta in New York; Editing by Lisa Shumaker and Daniel Wallis)