This is from cnn and it’s actually true

CNN) — "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds," the saying goes.
But whoever said that didn't face weather of the kind predicted for Wednesday. So postal workers won't be out delivering anything in six entire states, and parts of four others.
The US Postal Service said Tuesday night on Facebook that because of the predicted deteriorating weather conditions in the Midwest, delivery will be suspended in some areas.
The list of regions and states affected: Illinois, Iowa, Minnesota, North Dakota, South Dakota, Wisconsin, and parts of Kansas, Missouri, Montana and Nebraska.

Minnesota could see 70 degree below wind chill
Even for the hardiest, cold-tested Americans, this week's deep freeze is brutal, with dozens of temperature and wind chill records expected to occur from the Dakotas to Long Island, leading to warnings for people to stay inside.
In Minnesota, blustery weather could mean wind chills that could approach 70 below.
"These are VERY DANGEROUS conditions and can lead to frostbite on exposed skin in as little as five minutes where wind chill values are below -50," the National Weather Service office near Minneapolis and St. Paul tweeted. "Best thing you can do is limit your time outside."

Mind u we just got through a storm in my area. Outside temps were 1 degree Fahrenheit but -15 with the windchill. We lost power for 24hrs and my internal temp on my house hit 37’ Fahrenheit