Not really LR anymore, but the mid to late week storm looks like it may be an impressive rain producer for our region.
Latest AFD from Mount Holly-
As the low approaches the CWA Wednesday afternoon and evening, considerable large-scale lift will be in place via right- entrance region upper divergence from a favorably positioned 250-mb jet streak, strong differential cyclonic vorticity advection downstream of the advancing, more neutrally-tilted trough, and substantial warm/moist advection on the northern periphery of a poleward-advancing warm sector. Models indicate widespread precipitation developing in this regime, convectively enhanced near the approaching front and in vicinity of the intensifying surface low. Model soundings do indicate some instability in the pre-frontal warm sector, especially if the surface low tracks farther west. Have added thunder to the forecast for much of the region Wednesday afternoon and evening. Heavy rainfall is quite possible with this setup, especially since upper-level flow will become oriented mostly parallel to the approaching front (thanks in large part to the high- amplitude ridging downstream). QPF of 1-2+ inches is depicted with the CMC/ECMWF (50+ percent less in the GFS/ICON). Given the potential convective enhancement of the precipitation and a couple of antecedent soaking rain events, this seems like a setup that favors some flooding potential. Will monitor this closely as the event approaches. In addition, very strong cold advection will occur on the upstream side of the cold front, with temperatures dropping 10-20 degrees in a matter of a few hours after frontal passage. The cold conveyor belt of the intensifying surface low, along with favorable frontogenetical forcing/deformation, may produce a band of precipitation on the west/northwest side of the low that lingers for several hours. Thermal profiles would favor a switchover to snow for the southern Poconos and far northwest New Jersey, perhaps resulting in some accumulations Thursday morning.