A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the Arctic. But when there’s a wobble in the rotation, winds in the vortex can ...

Forecasters warn that a split polar vortex is set to bring a 'large supply of cold air' to North America in mid-February as a ...

During these times, it's referred to as a polar night. The opposite, polar day, occurs when there is 24-hour daylight. A polar day is when the sun does not set and stays above the horizon for an ...

Toronto Zoo’s polar bears had an important message about climate change to deliver. It is now always spring for their species due to the melting Arctic ice. Juno the polar bear has made the call, ...

The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...