Current thoughts from Mount Holly-
There are still many differences among the models in terms of timing and placement of each low. As a result, there are differences in terms of how far north and west bands of precip will spread, and how far to the north and west the rain/snow line will spread as well. As a result, this remains a low confidence forecast, and much can change. The farther north the storm will track, the more snow will fall across interior portions of the forecast area, and the more rain will fall across the southern portions. However, if the low takes more of a southern track, then less snow will fall across the interior, and there will be less of a chance for precip to change to rain, resulting in more snow for the southern half of the forecast area. Will also have to watch for banding of precip around the center of the offshore low, as heavier bands area possible, and it remains to be seen how far west those bands will spread and where they will set up. Initially, it will be quite cold and dry on Sunday, and it will take some time for the surface moisture to overcome the dry air and for precip to reach the ground. However, temps will remain cold enough for precip to fall as all snow until late Sunday afternoon, when some of the warmer air will lift into southern Delmarva and into Cape May, New Jersey. A little bit of mixing will develop late Sunday and into Sunday night. Generally expecting less than an inch of snow for most of the region Sunday, with 1-2 inches for western portions of the Delaware Valley and Delmarva. Going through Sunday night, as low pressure off the Mid-Atlantic coast lifts to the north, precip increases in intensity through the overnight hours, and questions remain as to how far north the rain/snow line will spread. Based on the latest trends, think the warmer air will hold off until Monday morning, and looking at a good 2-4 inches of snow from around Trenton or so south and west into the northern half of Delmarva and into southern New Jersey. The highest banding possible in the Atlantic City area. he two lows merge off the New Jersey coast on Monday, and bands of moderate to locally heavy precip will continue to impact most of the region. Looks like enough warm air will be able to spread through southern Delmarva and southern New Jersey, and the bands of snow will mainly impacts areas north of Philadelphia, but south of the Poconos.