‘Polar vortex’ to blast frigid air over much of US

New Pittsburgh Courier

SIOUX FALLS, S.D. (AP) — The weather warnings are dire: Life threatening wind chills. Historic cold outbreak.

Winter is normally cold, but starting Sunday tundra-like temperatures are poised to deliver a rare and potentially dangerous sledgehammer blow to much of the Midwest, driving temperatures so far below zero that records will shatter.

One reason? A “polar vortex,” as one meteorologist calls it, which will send cold air piled up at the North Pole down to the U.S., funneling it as far south as the Gulf Coast.

The temperature predictions are startling: 25 below zero in Fargo, N.D., minus 31 in International Falls, Minn., and 15 below in Indianapolis and Chicago. At those temperatures, exposed skin can get frostbitten in minutes and hypothermia can quickly set in because wind chills could hit 50, 60 or even 70 below zero.

Temperature records will likely be broken during the short, yet forceful deep…

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4 thoughts on “‘Polar vortex’ to blast frigid air over much of US

  1. Hypothermia (From Wikipedia, the free encyclopedia)

    Hypothermia (from Greek ὑποθερμία) is a condition in which core temperature drops below the required temperature for normal metabolism and body functions which is defined as 35.0 C (95.0 F). Body temperature is usually maintained near a constant level of 36.537.5 C (97.799.5 F) through biologic homeostasis or thermoregulation. If exposed to cold and the internal mechanisms are unable to replenish the heat that is being lost, a drop in core temperature occurs. As body temperature decreases, characteristic symptoms occur such as shivering and mental confusion.

    Hypothermia is the opposite of hyperthermia which is present in heat exhaustion and heat stroke. One of the lowest documented body temperatures from which anyone has recovered was 13.0 C (55.4 F) in a near-drowning incident involving a 7-year-old girl in Sweden in December 2010.[1]

    More here: https://en.wikipedia.org/wiki/Hypothermia

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