As high pressure retreats into the Canadian Maritimes this afternoon, a rapidly developing area of low pressure over the Gulf Coast will track towards the Philadelphia and New York City metropolitan areas by tonight. Clouds will increase through the day as a southeasterly wind transports warmer air into the region. Temperatures by this afternoon will rise into the mid 40's to lower 50's for highs.
Tonight, as rain advances from the southwest, temperatures will fall into the mid 30's over the interior and upper 30's to lower 40's along the coast. All rain is expected for most locations, however a mix of sleet, snow, and rain will be expected at the start of the storm over the northern interior locations of northeastern Pennsylvania, the Hudson Valley, and northern Connecticut.
Moderate to heavy rain will overspread the Philadelphia and New York City metropolitan area tomorrow morning with winds veering from the southeast to northwest at 10 to 20 mph with higher gusts. Temperatures will rise into the mid 40's to mid 50's for highs through early tomorrow afternoon. Rainfall amounts of one to two inches is expected from this storm.