A polar vortex collapse could bring extreme cold and travel disruptions to North America and Europe in mid-March. Newsweek's live blog is closed.

A weather spotter reported to the National Weather Service that 5.5 inches of snow had fallen in the Gum Tree area of northern Hanover. Elsewhere in the county, Ashland saw a report of 3.8 inches ...

GREECE, N.Y. — Winter storm warnings remain in effect through Wednesday in much of upstate New York. In the Rochester area, much of the heaviest snow has fallen closer to the Lake Ontario shoreline.

Areas north and southwest of Toronto are bracing for more wintery conditions. Environment Canada has issued an extreme cold warning for communities in the peninsula southwest of Toronto, with wind ...

Although widespread severe weather is not likely, there is a low-end potential for storms to create damaging straight-line winds and large hail. Storms will eventually sweep out of the area well after ...

Giant-sized hail form in supercell thunderstorms that last longer and allow the hail to grow bigger. Unusual, complex shapes form as hailstones tumble and collect water in storm clouds. Research ...

Ontario and Quebec were hit by a major storm on Saturday that continued through Sunday, making it the second in a week. It is the biggest storm of this winter season, causing hundreds of flight delays ...

Lots of folks in southern Ontario are spending a good portion of their Family Day Monday digging out from the weekend wallop of winter weather. Here are the communities that Environment Canada says ...

A winter snowstorm descended on Ontario and Quebec on Sunday bringing heavy snowfall and blowing winds to the neighbouring provinces for a second time in just four days. In Quebec, snow began ...

A person covers up during a snowstorm in Montreal, Sunday, February 16, 2025. A winter storm continues to strengthen in parts of Ontario and Quebec on Sunday as heavy snowfall is expected to blanket ...

A winter storm warning in parts of Ontario and Quebec is into its second day today as heavy snowfall is expected to further blanket the region. Environment Canada issued a winter storm warning ...

Following heavy snowfall earlier in the day, Environment Canada has now ended its winter storm warning for much of southern Ontario, including Toronto, Hamilton, Oshawa, St. Catharines and ...