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Over half a meter of snow and temperatures plunging below MINUS FIFTY degrees Celsius.
The coldest weather for almost 20 years is gripping large parts of the United States
and Canada thanks to what meteorologists are calling a 'polar vortex.'
Almost 4-thousand flights were cancelled on Monday, on top of thousands grounded over
the weekend when snow storms first hit. Schools have been closed in several U.S. states
to protect children from the dangerously cold weather.
Officials are also urging people to check on elderly and disabled relatives and neighbors.
Weather forecasters warn that, in weather that cold, frostbite can set in on uncovered
skin in a matter of minutes. Hypothermia can also set in quickly once the
mercury dips below minus 25 degrees Celsius.