Most summers, the polar jet stream retreats northward into Canada and weakens considerably, leaving the continental U.S. with ...

Earth’s upper atmosphere depended on a delicate balance of forces to keep the polar vortex trapped at the top of the world. The Polar Night Jet, a high-speed ribbon of wind circling the Arctic, acted ...

An “arctic blast” is a weather phenomenon that brings extremely cold temperatures down from the far north. Typically, this happens when cold air collects and pools over the Arctic and is then pushed ...

The Arctic chill draining across the U.S. over the past several weeks will change course as we turn the page into February. January featured unusual jet stream dynamics across North America, a highly ...

In recent years, the global climate has become increasingly extreme, with intensifying alternations of droughts and ...

The frigid stream of air that plunged down into the Central U.S. this week is breaking cold records from South Dakota to Texas, with temperatures in the single digits setting records in many locations ...

Summer 2024 was officially the Northern Hemisphere’s hottest on record. In the United States, fierce heat waves seemed to hit somewhere almost every day. Overall, the global average temperature was ...

The weekend’s Arctic air invasion is now moving out! Still some chilly winds ahead, but generally quite good weather for holiday shopping. Christmas week will be very mild, but a near ...

This article explores the meteorological phenomena behind these cold snaps, particularly focusing on the jet stream and its impact on Alberta's weather. The Jet Stream: A Key Player in Weather ...

While Wyoming is experiencing record high temperatures, it’s snowing and below zero in parts of Montana. Meteorologist Don Day says an “arctic logjam” ...