A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

The map below shows snowfall as a difference from ... there are two primary plumes of this fast-flowing air: the northern, polar jet stream and the southern, subtropical jet stream.

The UK is bracing itself for an Atlantic jet stream of up to 100mph which could see strong winds batter large parts of the ...

Forecasters said a strong temperature contrast from the clash of tropical and Arctic air will fuel a 'very powerful' Jet Stream with winds of up to 250mph. The Jet Stream will develop above the ...

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 ...

The researchers conclude that powerful jet stream winds around the equator would explain this unexpected result. Further building up their weather map, the team also found that the poles are ...

“Whether or not climate change is affecting the jet stream has changed over time,” said Pam Knox, agricultural climatologist with the extension office at the University of Georgia. “There's ...

The new map showed arctic air and tropical air coming together with the agency warning of "strong temperature contrast fuelling a very powerful Jet Stream". The Met Office said "Jet Stream winds of up ...

The UK is bracing itself for an Atlantic jet stream of up to 100mph which could see strong winds batter large parts of the country. Jet streams are a narrow band of fast-flowing air in the Earth's ...