It's Blossom on MSN
A series of polar vortex blasts may send temperatures plunging across the US
When parts of the vortex break down, lobes of Arctic air can drift south, guided by changes in the jet stream. This allows ...
Snowfall has been lacking across the United States so far this winter, especially across the Intermountain West.
Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still ...
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