This winter’s harsh run in the East is intensifying, with some of the coldest air so far this season plunging into Vermont this weekend.

With the polar vortex intensifying next week, the jet stream will acquire strength, however, in an approximate west-to-east pattern across the U.S. and southern Canada, AccuWeather senior ...

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.

The summer of 2025 brought unprecedented flash flooding across the U.S., with the central and eastern regions hit particularly hard. These storms claimed hundreds of lives across Texas, Kentucky and ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

New York is bracing for the coldest air of the winter this weekend, with snow. Learn how the polar vortex is involved.

Across the Northern Hemisphere, familiar seasons are starting to feel unfamiliar. Heat waves linger, cold snaps arrive out of sync, and storms stall over the same unlucky regions. At the heart of this ...

Every inch of Texas was impacted and eventually covered by a Winter Storm Warning. It was the coldest winter storm for Texas ...

The polar jet stream is a high altitude air current, flowing at elevations between 8 and 12 kilometers, that moves at very high speeds across the Northern Hemisphere. Its role is to separate cold air ...