A powerful winter storm is impacting the US, prompting emergency declarations across multiple states due to snow and ice.

Schools and offices have closed and flights have been cancelled as a polar vortex of ultra-cold air blasts snow, ice and wind across the US.

A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from central and southern states all...

MISSION, Kan. (AP) — Road conditions were deteriorating Saturday in the central U.S. as a winter storm brought a mix of snow, ice and plunging...

MISSION, Kan. (AP) — Road conditions were deteriorating Saturday in the central U.S. as a winter storm brought a mix of snow, ice and plunging...

A blast of snow, ice, wind and plunging temperatures stirred up dangerous travel conditions in parts of the central US on Sunday, as a disruptive...

A major, disruptive winter storm was sweeping across the central US on Sunday, forecasters said, bringing with it a dreaded combination of snow, ice...

A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from central and southern states all...

A blast of snow, ice, wind and plunging temperatures stirred up dangerous travel conditions in parts of the central U.S. on Sunday, as a disruptive...

Hundreds of thousands left without power and flights canceled as state of emergencies declared in several states