An area of low pressure over the Tennessee River Valley will track towards the New Jersey coastal waters by tomorrow morning. This low pressure system, moving along a stationary front off the coast, will produce moderate to heavy rain for the Philadelphia and New York City metropolitan areas later this morning on through tonight, tapering off to scattered showers by early tomorrow afternoon.
Rainfall amounts will range from one to two inches with the heaviest rainfall expected along the coast. Temperatures will rise into the upper 50's to mid 60's for highs this afternoon before steadying falling into the 40's tonight.
The low pressure system will depart by tomorrow morning with showers lingering along the coast into the early afternoon hours. As the low pressure system departs, colder polar air will build into the region which will suppress high temperatures in the upper 40's to lower 50's for the entire region. Breezy conditions are expected tomorrow afternoon and evening as the colder, drier air works into the Philadelphia and New York City metropolitan areas.