Winter Storm March 5-7th 2013

 Heaviest amounts of snow will be confined further to the south where heavier precipitation rates will occur which will allow dynamical cooling to take effect and draw down the colder air from above to the surface. Further north the boundary layer may be an issue and so you see the snow totals start to go down.. Matter of fact in the eastern Part of the state of PA into the NE Part ..we may be dealing with a rain snow mixture for some time..
We are not putting much weight of the GFS/NAM into the scenario because they seem to be to out of harmony with the rest of the guidance. 
If you are on the northern fringes of the precipitation shield you will be dealing with lighter rates and boundary layer issues..

Since we created this map the GFS has now come into better agreement with the rest of the guidance..

This storm will be more of a nuisance above southern PA and a hindrance for those from southern central PA south into MD and VA where the heaviest snows will fall..