An area of low pressure developed over Alabama and Georgia early in the morning on the 13th and tracked northeastward to the Mid Atlantic coast by the evening, passing just south of the Delmarva Peninsula. This system brought a mixture of rain and snow to eastern Pennsylvania, with snowfall totals ranging from a few tenths of an inch in urban areas and lower elevations to around 3 inches over the higher terrain. Precipitation began falling around 600 p.m. EST across southeastern parts of the state, with light rain at the onset around the Delaware Valley and light snow over the higher terrain in Chester County. The precipitation spread northward through the evening of the 13th, with locations from the Delaware Valley to the Lehigh Valley and Poconos reporting snow by 800 p.m. EST. As low pressure tracked northeast and away from the Mid Atlantic coast, the snow gradually ended across eastern Pennsylvania between 1100 p.m. EST on the 13th and 100 a.m. EST on the 14th.
County and municipal road departments commenced salt and sanding operations during the evening to overnight hours, with most primary roads remaining clear during the event and some secondary roads becoming snow covered. No significant weather related traffic accidents were reported, but a limited number of delayed school openings were reported across the region on the morning of the 14th.
Snowfall totals across eastern Pennsylvania from this event are as follows: 3.6 inches in Malvern (Chester County), 3.0 inches in Lake Harmony (Carbon County) and Williams Township (Northampton County), 2.8 inches in Fleetwood (Berks County), 2.5 inches in Elverson (Chester County) and Tobyhanna (Monroe County) and in West Rockhill Township (Bucks County) and Skippack (Montgomery County) and also Wayne (Delaware County), 2.2 inches in East Nantmeal Township (Chester County) and Alburtis (Berks County) and Springtown (Bucks County), 2.0 inches in Honey Brook (Chester County) and Hilltown Township (Bucks County) and in Gilbertsville (Montgomery County) and Havertown (Delaware County), 1.5 inches in Albrightsville (Carbon County) and Harleysville (Montgomery County), 1.0 inches in Bethlehem (Northampton County) and Eagleville (Montgomery County), 0.5 inches in Drexel Hill (Delaware County), 0.3 inches in Rockledge (Philadelphia County), 0.2 inches at the Philadelphia International Airport (Philadelphia County), and 0.1 inches at the Lehigh Valley International Airport in Allentown (Lehigh County).

Winter Weather in DELAWARE, PENNSYLVANIA
From 13-FEB-13 19:00:00 to 14-FEB-13 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in PHILADELPHIA, PENNSYLVANIA
From 13-FEB-13 20:00:00 to 14-FEB-13 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 13-FEB-13 18:00:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 13-FEB-13 18:30:00 to 14-FEB-13 00:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 13-FEB-13 18:30:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 13-FEB-13 19:00:00 to 14-FEB-13 00:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in BERKS, PENNSYLVANIA
From 13-FEB-13 18:00:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in LEHIGH, PENNSYLVANIA
From 13-FEB-13 18:30:00 to 13-FEB-13 23:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 13-FEB-13 18:30:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in CARBON, PENNSYLVANIA
From 13-FEB-13 19:00:00 to 13-FEB-13 23:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Weather in MONROE, PENNSYLVANIA
From 13-FEB-13 19:00:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 13-FEB-13 18:00:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 13-FEB-13 18:00:00 to 14-FEB-13 00:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS