Snuggle Up: This Valentine's Day is Going to be Brutally Cold in the Eastern U.S.

For more than 100 million people, this will be a serious, albeit short-lived, run in with pure Arctic air. In many ways, the quick hit by this cold air mass is a good example of how the weather is playing out this winter. There has been a constant battle between an El Niño-influenced weather pattern, featuring milder-than-average conditions across much of the country, and Arctic-influenced air masses that have brought snow to the Midwest and eastern seaboard.