A complicated major winter storm will hit areas from the Midwest, Ohio Valley, into the Mid-Atlantic and Northeast. Snow will begin the Midwest Saturday and spread into the Ohio Valley. We should see a band of 4-12 inches of snow developing in the Ohio Valley along the warm front where the low level jet will occur. That area of snow will move into Pennsylvania and Virginia Sunday. As the upper level low pivots and secondary development of the surface low occurs off the Mid-Atlantic coast, heavier snows will hit areas of Maryland, Pennsylvania into northern NJ. ECMWF has the heavy snow going into Philly, but that will be based on if the storm hits the benchmark for the I-95 corridor which looks possible. Once the storm develops, it will move northeast spreading the heavy band of snow up the New England coast. Lots of things can change and as you can seen, while the area of snow seems to be a consensus, the amounts do not. Also, the wintry mix area in Virginia needs to be taken into account as well.