A new burst of arctic air was on the way, and there is an "increasing potential of another significant winter storm" for Eastern states this weekend, the National Weather Service said.

The National Weather Service issues a litany of notices before and during inclement weather events. They can be important signals on how to respond.

We have two relatively new types in winter weather warnings, called extreme cold warnings and cold weather advisories. Let's look at what those mean, and where they are in effect this weekend.

Add Yahoo as a preferred source to see more of our stories on Google. It's been a strong winter for parts of the country already, with heavy snow and bitterly cold temperatures sweeping across the country over the past several weeks. Now, as we get ready ...