Snowstorm to Graze I-95:

The heavy snow invading the Northeast will graze the Interstate 95 corridor from Washington, D.C., to New York City to Boston, but eventually rain will win out over the snow.

Cold air will be stubborn to leave the Northeast's interior and northern New England, allowing significant snow to fall

However, the same cannot be said for the I-95 corridor from Boston southward.

Link--  

http://www.foxnews.com/weather/2013/03/17/snowstorm-to-graze-5-dc-to-nyc-to-boston/