Major winter storm to slam Mid-Atlantic and Northeast midweek, with D.C. on rain-snow dividing line.
'At least 6 to 12 inches of snow is likely from west-central Virginia to southern New England; wintry mix is most likely in Washington and Baltimore.
A major winter storm is set to wallop the Mid-Atlantic and the Northeast on Wednesday and Thursday, with many areas from western Virginia to southern New England expected to see heavy snowfall. But for the immediate Washington area, a messy mix of precipitation is more likely than a major snowstorm.
The storm will take the form of a classic nor’easter, forming near the coast of the Carolinas and crawling up the Mid-Atlantic coast. An area of high pressure over eastern Canada will feed cold air into the storm, and many models show the potential for at least six to 12 inches of snow from west-central Virginia through eastern Pennsylvania into New York City and perhaps into southern New England, including Boston.
But just to the east of this zone, which includes Washington, Baltimore and the eastern suburbs of Philadelphia, enough mild air from the ocean may get drawn inland for snow to flip to ice and rain, limiting accumulations. That said, as the storm pulls away Wednesday night into early Thursday, these areas could see rain and mixed precipitation change back to snow before ending.
The exact position of the rain-snow line is still coming into focus, and there is some chance it holds just to the east of Washington and Baltimore, which would allow for more significant snowfall in these cities and their close-in suburbs.'>>>
https://www.washingtonpost.com/weather/2020/12/13/mid-atlantic-northeast-snow-storm/?
