A moderate snow event affected the Poconos and Lehigh Valley as well as having a greater impact on higher terrain locations in Southeast Pennsylvania during the day on the 27th.  Snowfall averaged 2 to 5 inches with the highest amounts in the higher terrain.  There were no serious snow related accidents reported. In the city of Philadelphia, precipitation fell as mainly rain. Precipitation started as rain in southeast Pennsylvania and as snow in Berks County, the Lehigh Valley and the Poconos between 4 a.m. EST and 7 a.m. EST on the 27th.  As the precipitation intensity increased, the rain changed over to snow around 7 a.m. EST in the northwest Philadelphia suburbs and fell at its heaviest during the mid and late morning on the 27th. As the intensity decreased during the afternoon, some of the snow changed back to rain in parts of the Philadelphia northwest suburbs. The precipitation ended by 4 p.m. EST in most of the region. Temperatures were close to the freezing mark, so the snow accumulated most efficiently on grassier surfaces, bridges and less traveled roadways.
Representative snowfall included  4.7 inches in Elverson (Chester County), 4.5 inches in Albrightsville (Carbon County), Pocono Summit (Monroe County) and Glenmoore (Chester County), 4.3 inches in Saylorsburg (Monroe County), 4.0 inches in Williams Township (Northampton County), 3.6 inches in Doylestown (Bucks County), 3.5 inches in Summit Hill (Carbon County), Nazareth (Northampton County) and Wayne (Delaware County), 3.3 inches in Furlong (Bucks County) and Graterford (Montgomery County), 3.2 inches in Kutztown (Berks County), 3.0 inches in Huffs Church (Berks County), Royersford (Montgomery County) and Schnecksville (Lehigh County),  2.6 inches in Allentown (Lehigh County), 2.5 inches in Quakertown (Bucks County), Pottstown (Montgomery County) and Lansdale (Montgomery County),  2.3 inches in Spring City (Chester County), 2.2 inches in Lehighton (Carbon County), 2.1 inches in Glendon (Northampton County), 2.0 inches in Villanova (Delaware County) and 1.4 inches at the Lehigh Valley International Airport.

The snow was caused by a low pressure system that moved from the Red River Valley on the morning of the 26th eastnortheast and crossed the southern Appalachians on the morning of the 27th, the southern Delmarva Peninsula during the early afternoon on the 27th and was about 150 miles east of the Southern New Jersey Coast at 7 p.m. EST on the 27th.

Winter Weather in BERKS, PENNSYLVANIA
From 27-NOV-12 06:00:00 to 27-NOV-12 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in CARBON, PENNSYLVANIA
From 27-NOV-12 04:00:00 to 27-NOV-12 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MONROE, PENNSYLVANIA
From 27-NOV-12 04:00:00 to 27-NOV-12 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MONTGOMERY, PENNSYLVANIA
From 27-NOV-12 06:30:00 to 27-NOV-12 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in BUCKS, PENNSYLVANIA
From 27-NOV-12 07:00:00 to 27-NOV-12 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LEHIGH, PENNSYLVANIA
From 27-NOV-12 06:00:00 to 27-NOV-12 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 27-NOV-12 06:00:00 to 27-NOV-12 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in CHESTER, PENNSYLVANIA
From 27-NOV-12 06:30:00 to 27-NOV-12 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in DELAWARE, PENNSYLVANIA
From 27-NOV-12 07:00:00 to 27-NOV-12 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter