Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

This swirling mass of air above the Arctic can grow and bend, pushing blasts of frigid air south. Sea smoke, the result of extremely cold air blowing over warmer water, rises from Lake Michigan in ...

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as a polar vortex, is forecast to bring subzero temperatures to the Midwest, ...

Unlike civil aviation, where aircraft fly relatively steadily and generate lift at low angles of attack, military aircraft are often required to perform extreme manoeuvres. These manoeuvres can push ...

In yesterday’s post about Arctic ice melting away, I started writing a little bit about the “polar vortex” but decided it needed its own post. There’s a thing that’s been bugging me about it for a ...

Zachary Lawrence has received funding from NOAA. Amy Butler has received funding from NOAA and NSF. The polar vortex is an enormous, three-dimensional ring of winds that surrounds the North and South ...