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 the Valentine's Day weekend.
Untreated roadways and sidewalks could be slippery, causing some problems for the morning commute.
Episodes of snow and slippery travel will affect the mid-Atlantic states and parts of New England through Thursday.
Waves of arctic air invading the eastern half of the United States this week will culminate with the coldest weather of the season so far for some areas by the Valentine's Day weekend.
Cold air and flurries are in store for the New Hampshire primary on Tuesday but should not significantly impact voter turnout.
Storm Imogen battered parts of England and Wales with powerful winds and downpours Sunday night into Monday.Read Story >