I really don't have time to deal with this today, but here we go...
The operational 12Z 3/10/2017 European (ECWMF) snow output for portions of the Mid-Atlantic region through Tuesday night (3/14/2017).
Yes, these amounts are in inches (see legend). Click on image for larger version.
The operational 12Z 3/10/2017 GFS for the NECONUS showing MSLP and precipitation type and intensity for the period March 13 - 14, 2017.
This animated gif is from this morning's CWG entry -- the comment section of which is in a manic frenzy.*******
From this morning's WPC/NCEP/NWS discussion:
THE SETUP IS NOT YOUR CLASSIC MILLER TYPE-A OR TYPE-B STORM BUT SEEMINGLY A COMBINATION OF THE TWO -- THERE IS FORECAST TO BE AN ALREADY-DEFINED SURFACE LOW OFF THE GA COAST LATE MONDAY (VERY MILLER TYPE-A) IN ADDITION TO AN UPSTREAM CLIPPER MOVING THROUGH THE OHIO VALLEY (LIKE A MILLER TYPE-B).
HOW THE UPPER TROUGH SWINGS THROUGH THE MIDWEST WILL DETERMINE HOW THE DOMINANT LOW TRACKS -- IT COULD BE TUGGED FARTHER WEST BY A STRONGLY DIGGING TROUGH OR BE LEFT TO SWING FARTHER EAST. THIS IS ONE OF THOSE SITUATIONS WHERE THE SPREAD OF POSSIBILITIES IS NECESSARILY LARGE, ENCOMPASSING NEARLY ALL SCENARIOS FROM A LIGHT/MINOR EVENT TO AN OUTRIGHT BLIZZARD, DEPENDING ON YOUR LOCATION.
Yes, what we have here is a possible combination "Miller A" and "Miller B" storm -- see here for more information.
Obviously, more on this to follow in the coming days, especially if it "verifies."