Much of mid- and northeastern America is in the of a deadly cold snap. Many states from Michigan in the to Georgia in the south are experiencing freezing not experienced for . It is currently colder in many parts of the USA than it is in Antarctica. The cold is because of what is called a polar vortex. This is a swirling mass of and wind that has come down from the Arctic, which is where the North Pole is. The government has declared states of in Wisconsin, Illinois and Michigan. Many schools and have been closed due to the cold. People have been warned not to travel, and even not to go outside and breathe in the icy .
The website AccuWeather said that the temperature in Thief River Falls, in the state of Minnesota, dropped to a real-feel sixty degrees Celsius. Many parts of the Chicago River turned to , Niagara Falls turned into a winter wonderland and parts of Lake Michigan froze over. The bitter freeze is believed to be for the deaths of at eight people so far. Health officials are urging people to go outside only if it is necessary. They warned that exposing the to the freezing air was dangerous. It could lead to or breathing problems. People were also urged to be when shoveling snow outside and be careful of blocks of snow and ice falling from the .