‘Brutal’ Arctic blast expected to bring frigid temperatures to North America

Extreme cold warning issued in Canada as US forecasters warn of wind chills in Texas and major snow in midwest and east coast

A bitter" blast of cold Arctic air is set to bring dangerously frigid temperatures to swaths of North America, forecasters have warned.

In Canada, frigid Arctic air is being pushed from the Northwest Territories down into the province of Alberta, where Environment Canada has issued an extreme cold warning. The largest city, Calgary, could see temperatures plummet to -34.6F (-37C) on Friday, reaching a daytime high of -23.8F (-31C). This would mark the coldest January day in two decades for the city. Over the weekend, strong winds could make temperatures feel closer to -58F (-50C). In these conditions, experts say exposed skin can succumb to frostbite in less than a minute.