A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

Meteorologists often blame unusual weather events on the movements of a jet stream, not to be confused with the similarly active Gulf Stream. Learn the key differences between the two before the ...

Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit ...

The reason? Fierce jet stream winds supercharging its speed. The jet stream is like a river of west-to-east winds in the upper atmosphere. Airplanes use it like a highway. If flights are heading ...

For both events, you can blame the jet stream – the fast-moving air currents that flow west to east around the globe. In October 2024, the polar jet had buckled, trapping a high-pressure ...

The supersonic jet-stream winds circling WASP-127b at its equator are the fastest of their kind on any known planet. "There is an extremely fast circumplanetary jet wind found on the planet.