USPS suspends mail: US Postal Service will not deliver mail tomorrow in Minnesota, Western Wisconsin, Iowa, Western Illinois, Kansas, Missouri and Nebraska

The famous post-war, "No snow or rain or warm or dark night remains these couriers from the rapid completion of their appointed rounds", apparently does not appear to be polar vortex conditions. The US postal service said on Tuesday that it will not deliver email to areas any part of the country on Wednesday due to extreme colds caused by the polar vortex.

The service will be suspended Wednesday in parts of Minnesota, Michigan, Indiana, Illinois (including parts of Chicago), Wisconsin, Ohio, Iowa, Western Pennsylvania, Dakota and Nebraska, USPS said.

In addition to deliveries, pickups from companies, homes and collection boxes are also suspended. USPS has not yet responded to a request for comment.

People all over the country are preparing for record-winning temperatures – many schools, businesses and public services are closed and hundreds of flights have been delayed or canceled. Chicago is expected to be colder than the base camp at Mount Everest, with temperatures expected to plunge to 21 below zero. Experts warn about hypothermia and frostbite.

There have been at least six polar vortex-related deaths in Illinois, Iowa, Indiana, Wisconsin and Minnesota.