US temperatures set to plummet to record lows
Parts of America and Canada are experiencing near record-breaking low temperatures from a severe winter storm that has claimed at least 16 lives.
Satellite image shows polar vortex in US
Images by the National Oceanic and Atmospheric Administration show the polar vortex moving towards the east of the US today.
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Will we get America's Big Freeze and snow?
As much of the US experiences a dangerous and severe cold spell, does the UK have anything to worry about?
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Boiling water trick shows how cold it is in America
As the US battles sub-zero temperatures, ITV News Washington correspondent Robert Moore illustrates just how cold it is in Minnesota.
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'Polar vortex' due to hit midwest America
Leaders across America are urging residents to stay in their homes as "polar vortex" batters the east coast after snowstorm Hercules.