Morning Overview on MSN
Polar vortex map reveals which states are about to freeze in Arctic air
A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...
Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.
Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.
After this weekend's snow storm moves out, cold Arctic air will move in.
As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...
The Weather Network on MSN
Extreme cold targets Canada as the polar vortex buckles
Watch as a massive bowl of Arctic air is set to bring extreme, potentially record-breaking cold temperatures to parts of the ...
Cross-polar flow describes a unique meteorological setup most common during the winter. This is often responsible for many of the intense Arctic outbreaks that occur in the U.S. each decade. For cross ...
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