A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...
A major winter blast is stirring up dangerous conditions across the U.S. central and southern states all the way to the East ...
The polar vortex of ultra-cold air usually stays penned up around the North Pole, spinning like a top. But sometimes it escapes or stretches down to the United States, Europe or Asia — and that’s when ...
A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow ...
Frigid air that escaped the Arctic is plunging temperatures to subfreezing levels in some of the southernmost points of the U ...