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Western US and Canada brace for another heatwave as wildfires spread

Western US and Canada brace for another heatwave as wildfires spread

The fourth searing heatwave in five weeks is set to strike the west of the United States and Canada this weekend, aggravating wildfires that are already ravaging an area larger than Rhode Island as drought and record-breaking temperatures tied to the climate crisis pummel the region.

The impending heatwave comes as 12 US states are already battling 71 active wildfires. The combined area of the blazes is about 1,553 sq miles (4,021 sq km), according to the National Interagency Fire Center.

The largest blaze by far continues to be the Bootleg fire in south-central Oregon, which has been burning for nine days and has devastated an area larger than New York City with no sign of it letting up. As of Thursday morning, the fire was at only 7% containment and the cause remained unknown.

Almost 2,000 houses are currently threatened by the Bootleg fire. Tim McCarley described to the Associated Press having to flee his home in a rural area north of Bly. “The sheriff’s department had been there and they said, ‘If you don’t get out of here now, then you are going to die,’” he said. “We were running around like a chicken with its head cut off, throwing stuff into the car. Then we say, OK, that’s it, we got to go.”

They evacuated from the flames which came within 5ft (1.5 metres) of their house. Their trailer resembled a “melted beer can”, McCarley told the news agency, after the fire had passed.

Several large fires are also burning across northern California, including the Dixie fire, which erupted on Wednesday and has grown to more than 2,250 acres, close to where the deadly 2018 Camp Fire tore through the town of Paradise, and remains at 0% containment.

“It’s a lot of steep and inaccessible terrain and that’s making it really difficult to get containment,” said Lynette Round, an information officer with Cal Fire. “Ground Crews have to hike in, so it is a lot of work for the firefighters.”

In its early hours, the fire raced along the steep terrain about 10 miles (16km) from Paradise. The current fire, which erupted in the rugged Feather River Valley north-east of the town, has not advanced toward it, and residents have not been ordered to evacuate.

Larry Peterson, whose home in neighboring Magalia survived the previous blaze, said some of his neighbors were getting their belongings together in case they had to flee.

“Anytime you’ve got a fire after what we went through, and another one is coming up, you’ve got to be concerned,” he told KHSL-TV. Other locals stocked up on water and other items.

“We pretty much left with our clothes on our backs” during the previous fire, said Jennifer Younie of Paradise. “So this time we are looking to be more prepared and more vigilant.”

Joyce McLean’s home burned last time but she rebuilt it and would again if necessary, she told the station.

“We just take each day as it comes and if it happens, it happens,” McLean said. “There’s not much that we can do about it.”

Because little of the foliage has grown back in the area since the 2018 Paradise blaze, there is nothing there now for the current fire to burn, the Butte county supervisor, Bill Connelly, told the Sacramento Bee. “It’s probably not a direct threat at this time,” he said.

Western US and Canada brace for another heatwave as wildfires spread

Meanwhile, in Mariposa county, the River fire was brought to 36% containment, after destroying five structures and burning through 9,500 acres. Evacuation orders were lifted as crews worked to mop up hotspots, but officials warned that “years of drought and disease have weakened many trees, and those dead and downed trees and logs continue to pose problems”.

The number of acres burned in California this year is already eclipsing the number by this time last year, which also set a state record. By the end of 2020, roughly 4.1m acres had been scorched.

“Last year was quite an anomaly in August when we had over 14,000 lightning strikes that caused multiple fires at one time. Hopefully that does not happen again this year,” Round said. “But what we are seeing this year is we didn’t have as much rainfall and that makes the fuels more susceptible to burning.”

The raging wildfires are stoked by a wave of exceptional temperatures across the western region combined with a prolonged drought that has desiccated vegetation. The west has grown warmer and drier in recent decades as a result of the climate crisis, accelerating the fires and making the job of controlling them more difficult.

More than 60% of the US west is suffering exceptional or extreme drought – the highest rating since authorities began monitoring the phenomenon 20 years ago. Temperatures have also reached historic levels, with the National Oceanic and Atmospheric Administration marking 585 all-time records in the past 30 days.

“When have heat like this we are always concerned,” Round said, emphasizing that residents in the area must remain vigilant.

Writing in the Washington Post, meteorologist Matthew Cappucci said that the next punishing heatwave is expected to start on Saturday and reach a critical peak by Monday. It will be centered on a swath of the Rocky Mountains in the US and up into Canada, bringing temperatures up to 30F above the average for the time of year.

“In addition to the hot temperatures, the sultry air mass will spur additional wildfire growth and ignition across the west, where dozens of fires are already raging,” Cappucci predicted.

Satellite images posted on Twitter by the National Weather Service showed four giant clouds forming over the Bootleg fire with the southernmost starting to mass into the most extreme fire clouds of its sort, known as a pyrocumulonimbus. Such clouds, which occur when heat rises from a fire, can cause hail, lightning and tornadoes that can in themselves be extremely dangerous on the ground.

Western US and Canada brace for another heatwave as wildfires spread

The weather service said the cloud pattern was “terrifying in its own right”, and asked the public to “send positive thoughts and well wishes to the firefighters right now. It’s a tough time for them.”

Fatigue has already started to set in for first responders battling the blazes and this is just the beginning of a fire season expected to get worse in the coming months.

“We’re talking about a new kind of fire season, with repeated and persistent fires producing weeks and months of smoke,” said UCLA public health professor David Eisenman in a statement, noting that the compounding disasters will take a mental toll on residents as well. “Weeks at a time, most people are resilient, but if it happens for a few months every summer, that’s a different story. And months of smoke are the new thing that we’re going to see.”

This article was amended on 16 July 2021 to clarify that the “71 wildfires” referred to in the text and in a previous headline are all in the US. The figure given in the subheading for the total burned area again referred to the US alone.


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