Millions of Americans could see flight delays, cancellations, or messy road conditions as Thanksgiving travel gets underway.
A brewing storm is expected to primarily be a rainmaker, though some snow is possible along its northern edges.
A rare weather phenomenon that hasn't occurred since 1968 could soon impact the U.S., plummeting temperatures nationwide.
The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...
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