Reinforcing shots of cold air will continue to dive into the Northern Plains and Midwest this week. The coldest air will move in Friday, Saturday and Sunday, and wind chills will drop well below zero for many, including Minneapolis, Chicago, Kansas City and St. Louis. Watch this to see how cold it will get.

Japan is assessing damage from Monday's large earthquake as aftershocks continue along the country's northeast coast.

A clipper system will slide across the Great Lakes to the Northeast midweek, bringing another shot of snow for the region. Widespread snow totals of 3-5 inches are expected with some locations possibly seeing up to a foot. And that’s not all — the system will also usher in another blast of cold, arctic air. Check out the timing here.

Another atmospheric river is slamming into the Pacific Northwest. While some of these can be beneficial, this one may be largely hazardous for flooding rain. Here's the latest forecast.

A resident of Morris, Minnesota, captured not one, but two stunning phenomena high in the sky over her state. Freezing temperatures and a bright, sunny day combined to create sparkling, colorful halos, one that flanked the sun and one that hovered upside down above it.