A winter storm brought snow, freezing rain and then snow at the end to the Poconos and Lehigh Valley on the 1st into the afternoon of the 2nd. In Berks County and the northern Philadelphia suburbs, a transition from snow to freezing rain and then rain occurred, while in the immediate Philadelphia area, a transition from snow to plain rain occurred. In the Lehigh Valley and Poconos snowfall averaged 5 to 10 inches with around an additional one-tenth of an inch of ice. In Berks County and the Philadelphia northern suburbs, 1 to 4 inches of snow fell with one tenth of an inch or less of ice and in the immediate Philadelphia area around an inch of snow fell before it changed to rain.  The combination caused very slick traveling conditions and impacted the ravel through the 2nd.  In addition, winds caused about 8,000 homes and businesses to lose power in southeast Pennsylvania.
Precipitation started as snow throughout Eastern Pennsylvania on the 1st. It began in the afternoon in the Poconos, the late afternoon in Berks County, the Lehigh Valley and the northern Philadelphia suburbs and in the late evening in the local Philadelphia area. The snow transitioned briefly to sleet and then rain in the local Philadelphia area, its western suburbs and Berks County early on the 2nd. The rain ended during the late morning and early afternoon on the 2nd. In the Lehigh Valley and upper Bucks County, precipitation transitioned to a rain and freezing rain mixture during the early morning on the 2nd and then changed back to snow during the mid morning and ended during the early afternoon on the 2nd. In the Poconos, the snow fell heavy at times overnight on the 1st, changed to freezing rain on the morning of the 2nd for a few hours and then changed back to snow during the middle of the morning before ending close to Noon EST on the 2nd.
Speed restrictions were in place on all of the Delaware River bridges in and around Philadelphia as well as major roadways in the Lehigh Valley and Berks County.  In Bucks County, a jack-knifed truck closed Pennsylvania State Route 611 and there were multiple accidents on Pennsylvania State Route 309.  In Philadelphia, due to slick conditions, Lincoln Drive was shut down in both directions from Wissahickon Avenue to Gypsy Lane.  All schools were closed in the Lehigh Valley on the 2nd. Schools in southeast Pennsylvania including Philadelphia had delayed openings. Many after school afternoon and evening activities were cancelled.
Representative snowfall included 11.0 inches in Mount Pocono (Monroe County), 10.9 inches in Albrightsville (Carbon County), 10.4 inches in Stroudsburg (Monroe County), 9.8 inches 8.2 inches in Parryville (Carbon County), 7.0 inches in Washington Township (Lehigh County), 6.5 inches in Nazareth (Northampton County), 5.8 inches in Macungie (Lehigh County), 5.4 inches in Martins Creek (Northampton County), 3.9 inches at the Lehigh Valley International Airport, 3.7 inches in Springtown (Bucks County), 3.0 inches in Mertztown (Berks County), 2.0 inches in Gilbertsville (Montgomery County), 1.5 inches in Furlong (Bucks County) and Exton (Chester County), 1.1 inches in Chadds Ford (Delaware County) and 0.8 inches at the Philadelphia International Airport.
About 1/10th of an inch accumulated in Allentown (Lehigh County) and Mount Pocono (Monroe County).
The winter storm was caused by a low pressure system that moved from the lower Missouri Valley on the morning of the 1st eastward into Indiana on the evening of the 1st and western Pennsylvania early on the 2nd. During the mid morning of the 2nd, a secondary low pressure formed in the northern Delmarva Peninsula. It quickly became the primary low pressure system and exited to the east. At 1 p.m. EST on the 2nd it was just southeast of Montauk Point, Long Island. An arctic high pressure system that moved in tandem with the low pressure system across the southern tier of Canada prevented the low from traveling farther to the north and also kept a sufficient supply of cold air for precipitation to remain a wintry mix in the northeast part of Pennsylvania.

Winter Weather in BERKS, PENNSYLVANIA
From 01-FEB-15 17:00:00 to 02-FEB-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 01-FEB-15 18:00:00 to 02-FEB-15 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 01-FEB-15 17:30:00 to 02-FEB-15 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 01-FEB-15 18:00:00 to 02-FEB-15 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 01-FEB-15 22:00:00 to 02-FEB-15 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 01-FEB-15 22:00:00 to 02-FEB-15 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 01-FEB-15 22:00:00 to 02-FEB-15 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PHILADELPHIA, PENNSYLVANIA
From 01-FEB-15 22:30:00 to 02-FEB-15 01:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in DELAWARE, PENNSYLVANIA
From 01-FEB-15 22:30:00 to 02-FEB-15 01:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LEHIGH, PENNSYLVANIA
From 01-FEB-15 17:00:00 to 02-FEB-15 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in NORTHAMPTON, PENNSYLVANIA
From 01-FEB-15 17:00:00 to 02-FEB-15 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in MONROE, PENNSYLVANIA
From 01-FEB-15 14:30:00 to 02-FEB-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in CARBON, PENNSYLVANIA
From 01-FEB-15 14:30:00 to 02-FEB-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS