Assisted by a southward shift in the polar vortex, temperatures plummeted to their lowest levels in decades in some locations of the Northeast at the start of Valentine's Day.
Enough snow and ice will occur to snarl travel, disrupt daily routines and cause sporadic power outages in a large part of the eastern United States spanning Presidents Day into Tuesday.
A storm will track across portions of the midwestern United States into Sunday night bringing a batch of snow and ice.
Heavy rain will raise the risk of flooding and bring another dose of travel disruptions across more than a dozen states from the lower Mississippi Valley 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.
The weather may exacerbate medical conditions, including migraines and joint pain, doctors from the Mount Sinai Health System in New York said.