Q COSTARICA
The United States is freezing like in the movie The Day After Tomorrow. That country and also Canada are victims of a phenomenon called ‘polar vortex‘.
Cities like Chicago have registered temperatures of up to -46 ℃ (a person can freeze in 10 minutes of exposure).
That is: it is a deadly cold. A *%@# cold!
The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term “vortex” refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.
Many times during winter in the northern hemisphere, the polar vortex will expand, sending cold air southward with the jet stream.
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