MU on tomorrow:
(1/2) A double-barreled storm system will bring periods of rain to southeastern PA from Tuesday afternoon through Tuesday night. The counterclockwise flow around the primary area of low pressure will partially disrupt the north-to-northeasterly flow of cold air to its southeast..
(2/2) Thus, warmer air being drawn north/west into the LSV should face little resistance. However, the rain may still start as a brief period of wet snow.. or mixed rain and snow.. N/W of I-81. Snow won't accumulate on roadways, but a quick coating - 1" is possible on ridgetops