The puzzling and powerful polar vortex faces 'big uncertainty' as Earth warms
A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the Arctic. But when there’s a wobble in the rotation, winds in the vortex can ...
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Bitter cold blast makes January the coldest in over a decade as states brace for polar vortex
The frigid January temperatures resulted in the coldest start to the year in over a decade. A preliminary look at temperature ...
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Forecasters give their verdict as millions of Americans brace for rare polar vortex and savage snow storm
Experts have shared their insights on the 'complex' weather phenomenon amid fears it could leave vast swathes of the country ...