Residents of Wisconsin can expect a one-day delay in sending mail, as they walk on Wednesday at sub-zero temperatures, followed by hypothermia, which can cause sensations from minus 40 to minus 55 degrees in the south-central part of the state. ,
The USPS statement said that Wisconsin's postal codes starting with 530-532, 535, 537-539, 541-545, and 549, and Illinois postal codes starting with 600, 602 and 610-611, will not receive regular mail on Wednesday .
The decision was made because of "forecasts that predict temperatures to reach historic lows," the statement said.
These ranges of zip codes cover much of eastern Wisconsin, including the Fox Valley, Green Bay, Madison, Milwaukee, Sheboygan, and Wausau.
Although express mail delivery to megacities in affected postal codes will be available on Wednesday, USPS spokesman Sean Hargadon said, post offices will be open for retail services.
Earlier on Tuesday, the postal service announced that it would suspend Wednesday's delivery to western Wisconsin, Minnesota, Iowa, Nebraska and western Illinois, the Associated Press reported.