Rain in far SE PA Sunday night. No Precip North West of there. The TT snow map does show 1-3" of snow in those rain areas of SE LSV and PA though....pivotal has some light accums as well though not nearly as wide of an area. The Icon targets a similar area with rain/snow mix Sunday night. In both cases there is not a real strong pull from the NW so all snow is based on air from above vs. anything being pulled in.
Edit-The Icon snow map from WB, posted on the MA forum, is a lot more snow for the South LSV and SE PA than the TT maps. 1" for some in the far SE LSV. More N of Philly.