The Tuesday high of 89 degrees in Deadhorse appears to be the highest temperature ever recorded at any site above 70 degrees latitude in North America, said Brian Brettschneider, a National Weather Service climatologist.
A scorching hot day in Alaska’s Arctic set multiple records Tuesday, according to the National Weather Service.
The heat was the product of a combination of factors, including chinook winds from the south, winds that prevented cooler air from seeping in from the sides and a variety of upper-atmospheric conditions, Brettschneider said. “If you would have asked me two weeks ago, ‘What would it take for Deadhorse to hit 90 degrees?’, I would have described what happened,” he said.
“In a warming world, you can now set records when the conditions aren’t so extreme, and it’s easier to achieve extreme events,” he said. from 1969 to 2018, according to researchers at the University of Alaska Fairbanks. While all of Alaska has warmed, the North Slope had the biggest increase in average temperature over that period, according to the UAF scientists.
At Barter Island, which lies east of Deadhorse and is near the Canadian border, Tuesday’s temperature of 74 degrees was a new record for August, the service said. The temperature at Utqiagvik, the nation’s northernmost community, also hit 74 degrees, setting a
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