The last few days have really shown us that winter is here. The first major snowfall of the year over the weekend, now we can expect to see bitter cold temps this week.
The picture above shows the cold temps on Monday afternoon. Majority of the US is experiencing this cold front passing through. Even the states you wouldn't really expect (AZ,NM,NV).
An arctic cold front will push through the Midwest Monday into Tuesday, eventually reaching the Eastern Seaboard by Wednesday. High pressure will then build in behind the front, allowing very cold air to infiltrate portions of the U.S. The shivering temperatures may not end there, as a reinforcing shot of arctic air could arrive over the upcoming weekend.
Meteorologist are calling this the return of our old friend Polar Vortex. We were familiar with the vortex last year and it returns right before Christmas.
The polar vortex is basically a closed circulation surrounding the polar regions in the upper atmosphere, and when it becomes weakened or elongated, a piece of it can surge farther south. The result is arctic cold reaching into parts of Canada.
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