From Mount Holly AFD-
A brief lull is possible late morning/early afternoon, though isolated to scattered showers and storms will remain possible during this time. Our second round of heavy rain and storms for the day looks to begin forming across eastern PA during the early/mid afternoon as the cold front associated with this system begins its eastward trek across the region. At this time, the upper level trough will begin to dig and support increased baroclinic forcing along the front. Dew points will rise into the low to mid 70s with PWATs over 2.0 inches ahead of this line of storms. As a result, rainfall forecasts of widespread 1-3 inches total are expected with local amounts of 4 inches or more possible. With this in mind, a Flood Watch was issued for the I-95 corridor and areas north & west into the Lehigh Valley and Berks County. Additionally, though daytime heating will be limited, there is a bit of uncertainty if there will be any breaks in the clouds. If any amount of daytime heating does occur, instability and lapse rates could jump and increase the severe potential for the afternoon and evening. Still a lot of uncertainty with this potential to form, but with deep layer shear around 30kts, parameters could become sufficient to support severe thunderstorms with the best conditions across southern NJ and the Delmarva. SPC has placed this region into a Slight Risk (2 of 5) for severe weather. High temperatures in the afternoon look to be in the low-80s.