Mount Holly seems to to think later today and tonight for the Eastern and Southern areas based on forcing and other factors. We shall see.
Looking at radar trends seems for my area two time periods to watch, in a few hours for the area of rainfall moving in from the West and then tonight as stated by the AFD.
As the new surface low consolidates and moves north to off the New
Jersey coast later tonight, the forcing for ascent should increase
for a time again and this may be tied to a zone of 850 mb
frontogenetic forcing to the north and west of the surface low.
Depending on the strength and placement of this, a zone of
heavier rain is possible. This should also result in an increase
in the rain from west to east across much of the area this
evening. An easterly low-level jet migrates northward across our
area, especially tonight into Thursday morning, which could add
to the ascent across parts of the region. Some of the rain will
be heavier at times, which is when some localized urban
flooding cannot be ruled out. Total rainfall amounts are
forecast to be 1.0-1.5 inches across the region through the day
Thursday. Some elevated instability could occur for a time
especially this evening mostly south and east of Philadelphia,
although it is less certain if it would be enough to result in
some lightning/thunder.