A low pressure system that moved off the North Carolina coast during the evening of the 25th helped drop 1 to 3 inches of snow across Eastern Pennsylvania. The snow unfortunately coincided nearly perfectly with the Friday evening commute and resulted in numerous, but mostly minor, accidents and very long commute times. the evening commute was described as a nightmare. The snow began falling between 230 p.m. EST and 4 p.m. EST on the 25th.  The snow stuck instantly as temperatures were well below freezing. The snow ended between 8 p.m. EST and 9 p.m. EST on the 25th.  The snow caused two hour delays at Philadelphia International Airport. Schools in Philadelphia dismissed children early. There were speed reductions on roadways in southeastern Pennsylvania. Even the SEPTA Regional Commuter Rail Lines averaged thirty minute delays.
Representative snowfall included 3.2 inches in King of Prussia (Montgomery County), 3.0 inches in Brookhaven (Delaware County) and Wynnewood (Montgomery County), 2.9 inches in Rockledge (Philadelphia County), 2.8 inches in Perkasie (Bucks County), 2.5 inches in Alsace Township (Berks County), Drexel Hill (Delaware County), Pottstown (Montgomery County) and Chesterbrook (Chester County), 2.4 inches in Lansdowne (Delaware County), 2.3 inches in East Coventry Township (Chester County), 2.2 inches in Gilbertsville, Kulpsville and West Norriton (Montgomery County), 2.1 inches in Spring City (Chester County), 2.0 inches in Perkasie (Bucks County) and Pottstown (Montgomery County), 1.9 inches in Fleetwood (Berks County) and Summit Hill (Carbon County), 1.8 inches in Lehighton (Carbon County), 1.6 inches in Doylestown (Bucks County), 1.5 inches at the Philadelphia International Airport and in Werleys Corner (Lehigh County), 1.3 inches in Gilbertsville (Montgomery County), 1.2 inches in Jim Thorpe (Carbon County) and Langhorne (Bucks County), 1.1 inches in Bethlehem (Northampton County) and 1.0 inch at the Lehigh Valley International Airport, in West Chester (Chester County), Southampton (Bucks County) and Nazareth (Northampton County).
The low pressure system moved from the southern Rockies on the morning of the 24th into the Tennessee Valley on the morning of the 25th and reached Cape Hatteras, North Carolina at 7 p.m. EST on the 25th. It then proceeded quickly offshore to the northeast. The fast movement limited the amount of snow that fell in Eastern Pennsylvania.

Winter Weather in BERKS, PENNSYLVANIA
From 25-JAN-13 15:00:00 to 25-JAN-13 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 25-JAN-13 16:00:00 to 25-JAN-13 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 25-JAN-13 15:45:00 to 25-JAN-13 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in CARBON, PENNSYLVANIA
From 25-JAN-13 15:00:00 to 25-JAN-13 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in MONROE, PENNSYLVANIA
From 25-JAN-13 15:30:00 to 25-JAN-13 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in DELAWARE, PENNSYLVANIA
From 25-JAN-13 14:30:00 to 25-JAN-13 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PHILADELPHIA, PENNSYLVANIA
From 25-JAN-13 14:45:00 to 25-JAN-13 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Weather in LEHIGH, PENNSYLVANIA
From 25-JAN-13 15:30:00 to 25-JAN-13 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 25-JAN-13 15:45:00 to 25-JAN-13 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 25-JAN-13 15:00:00 to 25-JAN-13 20:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 25-JAN-13 15:15:00 to 25-JAN-13 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 25-JAN-13 14:30:00 to 25-JAN-13 19:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 25-JAN-13 15:00:00 to 25-JAN-13 19:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet