Snow has been falling at rates of 1-2 inches per hour, with some places, such as northern Chester County counting 7 inches as of 11 a.m., and Horsham and Worcester in Montgomery County and West Rockhill Township in Bucks County, counting 6 inches.
Some places in Lehigh Valley are reporting 6 inches, as well.
Closer to the City of Philadelphia, Brookhaven in Delaware County, near the airport, was reporting 3.5 inches as of 10:30 a.m.
Just across the river, as of 11:15 a.m., the rain-snow line has halted, and actually in Haddonfield has changed back to some rain and sleet as that line oscillates around 10 miles south and east of the city.
Read more at http://www.philly.com/philly/news/Bolaris_Snow_amounts_looking_like_4-8_inches.html#4O5Kac2dYdbyZwqk.99