It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here’s why it keeps happening.

While cold temperatures and snow are not at all unexpected in many parts of the world, they are quite rare in others. In ...

A polar vortex collapse is expected over the next two weeks, with experts warning the weather phenomenon could send mercury plummeting across North America. The shock meteorological change is ...

The National Oceanic and Atmospheric Administration (NOAA) explains that a polar vortex is a large area of low pressure and cold air currents which circulate around both of the Earth’s poles. It has a ...

The polar vortex could be reversing in a sudden stratospheric warming event, with the potential to send Arctic air and storms ...

A senior meteorologist with AccuWeather foresees shots of cold air infiltrating the Northeast in the coming weeks.

A polar vortex collapse is expected to bring severe winter weather to Canada and the US mid-month. This event could also affect the UK and Europe, disrupting weather patterns as cold Arctic air spills ...

with the polar vortex winds sharply decelerating, and then more gradually slowing down as we head into March [footnote 2]. Observed and forecasted (NOAA GEFSv12) wind speed at the 10-hPa pressure ...

During the winter, the polar vortex can strengthen and weaken - and even reverse direction - which has effects on the weather ...

The Polar Vortex is a fast-spinning circular motion ... winter returns with snow and wind Falling temps ahead: Michigan weather forecast Severe Thunderstorm Watch covers far southern Michigan ...

See, for example, the below-zero wind chills Dallas endured Wednesday morning, or when New Orleans was buried under a record-breaking 8 inches of snow in January. The polar vortex has been ...