Why has the weather been unseasonably cold in the Eastern US for the past week?

Answer 1

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A mass of cold air blew down from the Arctic Circle. 71% of North America has had unusual coldness from last Monday till Thursday.

Answer 2

Warm air in the western US has been pushing northward. That pushes the polar vortex up to the north. As if in compensation, the polar vortex got pushed southward over the central and eastern portions of the country. It's now pretty much back to normal.

• oikoσ

  Lv 7

  4 weeks agoReport

  Thank you for your erudite comment. You are a legend in your own . . . . . . . . . . . . .mind.
  

Answer 3

Global cooling has begun.