The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
The dangerous cold gripping the eastern United States will set the stage for disruptive snow and ice to unfold from Tennessee and Georgia to Maine Presidents Day into Tuesday.
Heavy rain will raise the risk of flooding across more than a dozen states in the Southeast on Presidents Day to the East Coast on Tuesday.
Winter's frigid air can bring with it possible plumbing problems, including frozen pipes.
Snow days are exciting for children, but harsh cold and treacherous wintry weather can make it difficult to get outdoors and play.
With temperatures expected to plunge well below zero Fahrenheit this weekend, homeless populations in major Northeast cities are facing life-threatening conditions.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.