Mount Holly AFD snippet-
For Sunday, the second of two low pressure systems will affect the area as deepening low pressure system moves northward through the day from the Carolinas towards NE PA. This will occur in response to a strong shortwave pivoting around an upper level low over the Midwestern States. This will lead to another wet day and the difference compared with the first system is that there will be a bit more instability in play as the triple points moves over Delmarva and southern NJ with low level flow from the S/SE. Expect rain/showers to move in southwest to northeast through the morning into the early afternoon and it`s worth noting, precip could come through in several rounds with a first round moving in during the morning with heavier rain/showers moving in by late day as the system draws closer. The first system has brought a general 1-2 inches of rain so far to much of the area with 2-5+ inches over parts of Delmarva, South Jersey and the NJ coast. This second low will once again tap into rich moisture with PWATs of 1.25, and with a warm cloud layer around 10,000 feet with some instability, precipitation efficiency will be maximized, with rainfall rates potentially on the higher side, especially later in the day. The good news is the system will be a bit more progressive but still, expect another 1 to 2 inches of rain on top of increasingly saturated ground with locally higher amounts possible. For these reasons, a Flood Watch has been issued for our Delmarva, South Jersey, and NJ coastal counties.