Starting Sunday, the deep freeze will be felt in thenorthern US plains, including North and South Dakota, andthrough the Great Lakes region and Ohio Valley, according to theNational Weather Service.
It will be some of the coldest weather to grip the region intwo decades, with blizzard conditions expected in the CentralPlains and Great Lakes regions, forecasters said.
"The last really big Arctic outbreak was 1994," said BobOravec, a forecaster with the National Weather Service."Outbreaks like this don't occur every day."
In northeastern Canada, about 110,000 customers were withoutpower due to a transformer fire on Saturday linked to heavysnow, government officials and Newfoundland and Labrador Hydrosaid.
The push of Arctic air could bring record low temperaturesfrom Montana to Michigan, before moving the Northeast, where itwill arrive by early Tuesday, forecasters said.