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

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

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.

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 is a “constant feature” that begins to develop sometime in September and persists through sometime in spring ...

After Feb dumped a wave of unconditionally severe winter weather in the US, March is about to unleash those conditions again due to the polar vortex collapse.

Strong westerly winds banded together in the stratosphere of the North Pole are what make up the Arctic polar vortex, according to the National Oceanic and Atmospheric Administration (NOAA). The winds ...

NOAA Climate.gov image, adapted from original by Laura Ciasto. This winter, the polar vortex winds have stayed consistently stronger than average, corresponding to anomalously low atmospheric ...

Less than a week after snow, sleet and freezing rain, we're now forecasting highs in the 70s. During its coldest point, last week saw wind chills drop to -30° to -50° in states like Iowa ...

The polar vortex has been “considerably stronger” than usual this year, according to Laura Ciasto, a meteorologist with NOAA’s Climate Prediction Center, which should keep record-breaking ...