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US: Oregon wildfire burns area 'larger than New York City'

July 17, 2021

The massive fire raging in southern Oregon for the past 10 days is likely to continue due to unstable weather. A 'fire cloud' collapsed threatening firefighters with strong downdrafts and flying embers.

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Flames and smoke from a bootleg fire rise in the southern US state of Oregon. The bootleg fire caused by lightning spilled over into the traditional territory of the Klamath tribes, who still have the right to hunt and fish in the countryside, sending huge, swirled clouds of smoke into the sky that could be seen for miles.
The Bootleg Fire is by far the largest active fire in the US, encompassing 240,000 acresImage: Oregon Office of State Fire Marshal/AP/dpa/picture alliance

Efforts to contain a vast blaze scorching the western US state of Oregon have failed, as forecasters said Friday that dry, unstable, and windy conditions were likely to keep fueling the massive wildfire.

The Bootleg Fire in southern Oregon, near the border with California, was just one among dozens of major fires raging across the drought-stricken western United States.

However, it grew overnight to 377 square miles (976 square kilometers) — greater than the size of New York City. The wildfire remains only seven percent contained.

"The Bootleg Fire perimeter is more than 200 miles long -- that's an enormous amount of line to build and hold," said firefighter commander Rob Allen.

"We are continuing to use every resource, from 'dozers to air tankers to engage where it's safe to do so especially with the hot, dry, windy conditions predicted to worsen into the weekend."

'Fire cloud' collapses

The inferno, which is growing by 4 miles a day, has forced 2,000 people to evacuate and is threatening 5,000 buildings, including homes and smaller structures in a rural area just north of the California border, fire spokeswoman Holly Krake said.

The fire is so large that it generates its own weather. "Fire clouds" are formed from superheated air rising to a height of up to 10 kilometers above the blaze, which can spawn lightning and high winds.

A photo taken with a drone provided by the Bootleg Fire Incident Command, a pyrocumulus cloud, also known as a fire cloud, is seen over the Bootleg Fire in southern Oregon on Wednesday, July 14, 2021.
Fire clouds are towering pyrocumulus clouds form from condensed moisture that is sucked up through the fire's smoke columnImage: Bootleg Fire Incident Command/AP Photo/picture alliance

One such fire cloud collapsed Friday, spreading embers and forcing the firefighters to flee the fire lines.

"We're expecting those same exact conditions to continue and worsen into the weekend,'' Krake said of the fire-induced clouds.

Impact on neighboring California

The fire also threatened the power supply in California where heatwaves in the past years have put a strain on the state's grid.

California Governor Gavin Newsom announced that the state was sending reinforcements to Oregon even as the state battled its own fires, his office's emergency service said.

Demand for personnel and equipment across the Pacific Northwest has strained available resources. More than 1,900 firefighters and a dozen helicopters as well as airplane tankers and bulldozers were assigned to the Bootleg.

Caused by climate change

About 70 major active wildfires were listed on Thursday which has burned more than 1 million acres in 12 states, the National Interagency Fire Center in Boise, Idaho, reported.

The fire stands as the fifth largest on record in Oregon since 1900, according to state forestry figures.

Scientists have said the extremely dry conditions and heatwaves have been tied to climate change, making wildfires harder to fight.

Climate change has amplified droughts making the region warmer and dried in the past 30 years.

This has created the ideal condition for wildfires to spread out of control and inflict unprecedented damage, growing in both frequency and intensity.  

adi/rc (AFP, AP, Reuters)