With warm air surging into the East, many people may think that Friday marksthe start of spring. However, the milder months will not officially get underway until Sunday evening at 7:21 p.m. EDT.Despite the official designation of spring on Sunday, winter weather will notgive up so easily. Cold air, accompanied by a threat of snow, will blast backinto the East next week.

Story by AccuWeather.com Senior Meteorologist Kristina Pydynowski