US Bracing for Massive Polar Low

[Billy_Bob]

Arctic Air Will Move Into U.S. This Week
Arctic air will move back into the central Plains, Great Lake States and Western U.S. this week. Winter Storm Warnings, Winter Weather Advisories and Wind Chill Advisories are in effect in many areas. Recent heavy rains across the lower Mississippi and Tennessee Valleys will shift into the Carolinas Monday. Rivers that came up over the weekend will recede across portions of the South.
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[Crick]

And what, Mr Weatherman, is causing that polar vortex to form?

 

[Billy_Bob]

New years is going to be one fun time in Cali and Nevada...

Source – http://www.triforceweather.com/2014/12/28/rare-arctic-blast-to-hit-california-las-vegas-and-arizona-this-next-week/

 

[mamooth]

Yes Billy, it often gets cold in winter. Is there any point to this?

 

[skookerasbil]

Yes Billy, it often gets cold in winter. Is there any point to this?

Hey Mamooth.....better be fixing to get a little kitty sweater for that little kitty cat.

 

[Billy_Bob]

Yes Billy, it often gets cold in winter. Is there any point to this?

Cali very seldom gets near freezing and snow on the coast.. Guess what is predicted moron.... This is very much out of the ordinary (last 100 years) but alarmist kooks only focus om putting their heads up their ass when it comes to cyclical cooling phases..

 

[mamooth]

San Diego and Los Angeles are both over 50F now. No snow. No freeze warnings.

You're just not very good at this. A record warm year is kind of the opposite of a cyclical cooling phase.

 

[Old Rocks]

So even those with reading problems can understand.

 

[Crick]

New years is going to be one fun time in Cali and Nevada...

Source – http://www.triforceweather.com/2014/12/28/rare-arctic-blast-to-hit-california-las-vegas-and-arizona-this-next-week/

I can't tell if you were attempting to answer my question or not, so allow me to repeat:

What, Mr Weatherman, is causing a polar vortex to form?