Pictures of New York City in the grip of the snow storm plaguing north-east America have emerged as the metropolis braces for a "polar vortex".
City leaders declared a state of emergency as a snow storm dubbed "Hercules" sweeps across the north east of America.
Storm Hercules dumped 21 inches of snow on Boxford, just north of Boston, by Thursday night, according to the National Weather Service.
As much of the US experiences a dangerous and severe cold spell, does the UK have anything to worry about?
As the US battles sub-zero temperatures, ITV News Washington correspondent Robert Moore illustrates just how cold it is in Minnesota.
Leaders across America are urging residents to stay in their homes as "polar vortex" batters the east coast after snowstorm Hercules.