An arctic air mass will impact all of southeast Michigan through Wednesday as the coldest temperatures of the winter so far arrive this week. A cold weather advisory is in effect through Wednesday for all of the region.

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans. See maps of the arctic blast.

Several states across the country have announced school closures this week as they brace for a particularly cold snap.

The storm that was responsible for our overnight snow and rain is now quickly pulling up into Eastern Canada. As this storm continues to move farther northeast, cold Arctic air is going to replace it.

The Arctic is heating up particularly fast as a result of global warming—with serious consequences. The widespread permafrost in this region, where soils currently store twice as much carbon as the atmosphere,

Extreme cold has a unique ability to render survival dependent on uninterrupted energy supplies. A power outage during a heat wave, while dangerous, generally poses less of an immediate threat than one during an Arctic blast. You can survive without air conditioning longer than you can survive without heat in sub-zero temperatures.

Prepare for warm cups of coffee and hot chocolate weather! Artic air plunges into the U.S bringing wind chills in the teens this week. Here's the details on the week ahead.

My kids and I enjoyed the small things and connecting with each other. I realized that as my kids get older, I might not have many vacations like this one.

HOUSTON — All Houston airports will close Tuesday due to the winter storm expected in the area, officials said Sunday. An arctic front with wintry precipitation is expected to move into the area overnight Monday.

By the afternoon hours on Tuesday, the temperature in Denver could break above freezing for the first time since Friday afternoon.

Temperatures will hover in the single digits above and below zero across the Front Range and Eastern Plains, but overnight wind chills will make it feel as cold as minus 30.