The polar vortex has returned to the U.S., and frostbite ... extending from the U.S.-Canada border to the Florida Panhandle and Deep South Texas. HOW TO WATCH FOX WEATHER The north-central U.S ...

Every U.S. state but Hawaii, California and Florida have some or all parts ... Obviously this isn’t the first polar vortex episode of the winter, but it looks to be the most severe.” ...

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe.