A powerful blast of frigid, Arctic air, which is being aided by a filament of the polar vortex, has begun smashing longstanding temperature records, from the Ohio Valley to the mid-Atlantic states
The eastern U.S. is currently gripped by the most unusually cold air of any region on Earth, based on computer model data showing global temperature departures from average, with temperatures between 25 and 45 degrees below average or more.
In Chicago, which is no stranger to cold weather, the Arctic outbreak has threatened records last set in the late 19th century for the coldest high temperatures so late in the season. Typically, the coldest weather occurs in January, and it is more difficult to smash all-time record cold temperatures in February, but this airmass — which is coming via a direct flight from Siberia — seems to be an overachiever. Read more...
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