Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still ...
The Arctic Oscillation is a metric used to describe the strength of the polar vortex, or mass of arctic air that rotates ...
The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback