The United States is preparing for a severe drop in temperatures and an icy onslaught as it anticipates the season's coldest ...

Parts of three states, Alaska, Florida and Hawaii, have recorded above ... like dripping paint. Then, the polar vortex that directly affects our weather, the one in the troposphere, brings ...

So what is a polar vortex collapse and why does it affect weather so dramatically? Advertisement Advertisement As the National Weather Service explains, the polar vortex is an area of low pressure ...

But for a huge swath of more populated land, from Alberta to Quebec in Canada, and the Pacific Northwest to the Northeast in the U.S., a polar vortex-linked series of frigid blasts await.

Their destructive effects were first documented in the Antarctic ... and covered an unusually large area. In addition, the polar vortex was stronger than usual. Here, winds circulate around ...