AccuWeather reports the combination of lingering arctic air and two merging storms has the potential to spread a swath of snow, wintry mix and slippery travel from the Midwest to the East Thursday into Friday.
Essentially the area spanning I-70 to I-80 in the Midwest to the central Appalachians has the potential for a light to moderate snowfall and the associated travel delays.
Cities that may be in the path of the snowfall include St. Louis, Chicago, Indianapolis, Columbus, Ohio, Pittsburgh and Morgantown, W.Va.
Along the I-64 corridor in the Midwest, a wintry mix could bring locally slippery conditions in Louisville, Ky., Cincinnati, Ohio, and Charleston, W.Va.
Along the East Coast, the area from Washington, D.C., to Philadelphia and central New Jersey could be in for anything from a period of snow to a wintry mix Thursday night into Friday.
The area from New York City to Boston has a chance at several hours of steady snow or just flurries. How much snow and wintry mix falls will depend on how quickly the storm strengthens upon nearing the coast.
A storm system moving offshore will bring locally heavy snow to part of eastern New England Monday night into Tuesday.
Colder air will have been around for a few days ahead of the late-week storm. As a result the snow and wintry mix has a greater potential to adhere to paved and concrete surfaces, raising the risk of slippery conditions and travel delays.
The arctic air is already unleashing locally heavy lake-effect snow even in areas missed by the path of the general storms this week.
Senior Meteorologist Kristina Pydynowski has more on the snowy and colder week for much of the region.
A weaker storm could bring snow showers, even a coating of snow from Washington, D.C. to Philadelphia Wednesday night into Thursday morning.
AccuWeather.com will have further updates on the potential for snow with the Thursday/Friday storm as the week progresses.
EDITOR'S NOTE: This story was written by Alex Sosnowski, expert senior meteorologist for AccuWeather.com.