Feb 22nd-23rd Winter Storm

Low pressure is taking shape over the south central part of the USA. This low pressure area is expected to head up towards the Great Lakes region, pushing a warm front across the area and then  drag a cold front across the region.

. This cold front will advance towards the region and a wave of low pressure will form over the southeast and move to a position off the southern New Jersey Coast. Due to the warm front moving across the region we will have what is called Warm Air Advection precipitation breaking out across the region. 
The air mass in place is very shallow across the central and western part of the state so as the warmer air moves over top of this shallow cold air it will result in some winter mix precipitation. We are not expecting a large amount of ice or snow but an inch or two of snow could fall and up to a tenth of an inch of ice is possible. Untreated roadways could become slippery. 
Further east this cold air will scour out fairly quickly due to easterly winds and warming temperatures so locations may start as a mixture of snow sleet and rain but quickly transition over to rain . Extreme Southeast PA should remain all rain.
For areas further north of PA.. we want to wait one more cycle run of the guidance to see how far north the warmer air is anticipated to advance. 
For those that live in the NYC /PHL area this will be an all rain event. Rainfall looks to be generally .75 to around 1.25 inches. 
The areas that look to be all snow would be Northern New England.. 
Southern New England looks like there could be precipitation type issues as well.. which is one reason why we are holding out one more model cycle for places further north..