An arctic cold that gripped large swaths of the United States this week with dangerously cold weather has resulted in record wind chills that have reduced temperatures by 40 degrees in just 30 minutes in the western part of the country.
The polar cold front on Wednesday shattered the previous record for an hour-long temperature drop in Cheyenne, Wyoming, with temperatures dropping from 43 degrees to 3 degrees between 1:05 p.m. and 1:35 p.m., the National Weather said. Service in Cheyenne. The previous record was a 37 degree drop in one hour.
The agency warned at the time that temperatures continued to drop.
Within two hours, the winter cold sent temperatures in southeastern Wyoming plummeting by 51 degrees, from 42 degrees to -9 degrees, the NWS reported.
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“Bottom continues to fall as wind chills hit -40 locally in Cheyenne! Stay safe out there!” notify the agency.
Denver also felt the frigid conditions as the Arctic cold front crossed Wednesday afternoon.
After peaking at 50 degrees earlier in the day around 4 p.m., gusty winds plunged temperatures at Denver International Airport from 42 degrees to 5 degrees in an hour, FOX31 Denver reported.
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The 37-degree drop is likely the largest one-hour temperature drop at the airport, NWS Boulder said.
Within an hour, freezing temperatures continued to head towards sub-zero temperatures, reaching 1 degree below zero, the station reported.
Wind chill around Denver pushed temperatures even further below zero, hitting -22 degrees by 6 p.m., the report said. Negative conditions were expected to last through late Friday morning.
In Portland, Oregon, the NWS warned that the wind chill on Thursday could dip to zero degrees with the possibility of dropping to 25 degrees below zero in parts of Oregon’s northern Cascades and southern parts of the state. from Washington.
These mountainous areas could receive up to five inches of snow and nearly half an inch of ice, with wind gusts of up to 70 miles per hour above the treeline, the agency said.
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The Associated Press contributed to this report.