A southeastern United States low pressure system that formed on a frontal boundary helped produce average snowfalls of 3 to 5 inches from Berks County and the Lehigh Valley southeast through the Philadelphia area and 1 to 3 inches across the Poconos during the daytime hours on the 10th. The heaviest snow fell in the Philadelphia suburbs where the combination of heavier snow and colder surface temperatures were maximized. The snow caused school districts to either cancel classes or have delayed openings.  Numerous accidents occurred on roadways in southeastern Pennsylvania as it snowed during the morning commute. Precipitation started in Eastern Pennsylvania between 6 a.m. EST and 8 a.m. EST. The snow fell at its heaviest during the morning.  The snow ended between 1 p.m. EST and 3 p.m. EST that afternoon.
Representative snowfall included 5.5 inches in Quakertown (Bucks County), 5.1 inches in Perkasie (Bucks County), 5.0 inches In Hatfield and Pottstown (Montgomery County), 4.8 inches in Warwick Township (Bucks County), 4.4 inches in Horsham (Montgomery County), 4.2 inches in Warminster (Bucks County) and Abington (Montgomery County), 4.1 inches in Phoenixville (Chester County) and Wayne (Delaware County), 4.0 inches in Furlong (Bucks County), Drexel Hill (Delaware County) and East Nantmeal (Chester County), 3.9 inches in Concord Township (Delaware County), 3.8 inches in Huffs Church (Berks County), 3.6 inches in West Chester (Chester County), 3.3 inches in Fleetwood (Berks County), 3.1 inches in Bethlehem (Northampton County), 3.0 inches in Langhorne (Bucks County), 2.8 inches in Reading (Berks County), 2.7 inches at the Lehigh Valley International Airport, 2.6 inches in Mohnton (Berks County), 2.5 inches in Albrightsville (Carbon County), 2.2 inches at the Philadelphia International Airport,  1.0 inch in Summit Hill (Carbon County) and 0.8 inches in Stroudsburg (Monroe County).
The low pressure system responsible for the snow formed along a stationary front in the southeastern United States overnight on the 9th. At 7 a.m. EST on the 10th, it was located over western North Carolina. It proceeded to move east and reached the North Carolina coastal waters at 7 p.m. EST that evening and moved farther east offshore overnight.

Heavy Snow in DELAWARE, PENNSYLVANIA
From 10-DEC-13 07:00:00 to 10-DEC-13 14:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in EASTERN MONTGOMERY, PENNSYLVANIA
From 10-DEC-13 07:30:00 to 10-DEC-13 14:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in LOWER BUCKS, PENNSYLVANIA
From 10-DEC-13 07:00:00 to 10-DEC-13 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in BERKS, PENNSYLVANIA
From 10-DEC-13 06:00:00 to 10-DEC-13 13:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Weather in CARBON, PENNSYLVANIA
From 10-DEC-13 07:00:00 to 10-DEC-13 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Weather in MONROE, PENNSYLVANIA
From 10-DEC-13 07:00:00 to 10-DEC-13 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 10-DEC-13 06:30:00 to 10-DEC-13 13:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in LEHIGH, PENNSYLVANIA
From 10-DEC-13 06:30:00 to 10-DEC-13 13:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 10-DEC-13 07:00:00 to 10-DEC-13 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 10-DEC-13 06:30:00 to 10-DEC-13 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 10-DEC-13 06:00:00 to 10-DEC-13 13:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 10-DEC-13 06:30:00 to 10-DEC-13 13:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PHILADELPHIA, PENNSYLVANIA
From 10-DEC-13 07:30:00 to 10-DEC-13 14:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet