Our weekend storm will run from St. Louis through the Ohio Valley Friday night through Saturday, arriving with heaviest snow to New England Saturday night into Sunday morning, though bursts of light snow will probably develop earlier, during the day Saturday, with an ocean wind developing. I've lowered our Saturday forecast high for New England from 24° to 20° ahead of the storm, so surely this event is mostly snow. Total amounts for many will probably reach greater than 6", and at least plowable snow of a few inches seems likely for most of the region.
We're still about 55-60 hours from the onset of meaningful snow Saturday evening and night (though bursts of mostly light snow are possible during the day Saturday). Each season, I make it no secret that the accuracy of all snow amount forecasts drops considerably outside of 24 hours, and even more outside of 48 hours. So...why even put out a map now? In this particular instance, there is decent agreement at this early juncture of at least the amounts I've indicated, so it seemed wise to get the information out as guidance - with the honest disclaimer that plenty can change.
