The polar jet stream can drive cold fronts and bring arctic weather to lower latitudes, especially during winter. It’s like the Earth’s thermostat, helping to regulate temperatures by moving ...

When a 'blocking pattern' interrupts the jet stream our weather can get stuck for a while in very different ways - either ...

South of the Arctic’s polar vortex is the jet stream, a river of west to east air that flows five to nine miles above ground, and helps keep the pole’s cold air confined to the Arctic.

It acts like a rock in a stream, effectively blocking any incoming weather systems and rain. Known as a "blocking high", it can last for 10 days or more and coupled with increasingly strong April ...

Thanks to a dip in the jet stream in the eastern U.S., cold air ... across the Midwest and Northeast at the start of the week as Arctic air surges south from Canada. Temperatures across much ...

Colorado could see more frequent and intense temperature swings, in part due to climate change. DENVER — Colorado is no ...

Temperatures near the Arctic Circle are forecast to run up to ... A highly amplified jet stream pattern is the root cause of the extreme temperature pattern across North America this week.

This jet stream is powered by temperature contrasts between the tropics and the Arctic. Arctic regions are warming particularly rapidly due to climate change thus reducing this temperature contrast.