Low pressure developed along a stationary boundary over the Southeast US on December 16. The low pressure tracked into the Appalachians before beginning to develop near the southern New Jersey coast early on December 17. This brought widespread precipitation to the mid-Atlantic. Surface temperatures were initially cold enough for frozen precipitation in some areas, but a surge of low level warm air caused most of the frozen precipitation to fall as sleet and freezing rain, with most areas eventually seeing a change to all rain. In some places, impacts due to icing were significant.

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 16-DEC-19 17:00:00 to 16-DEC-19 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trace amounts of freezing rain were reported.

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 16-DEC-19 18:00:00 to 17-DEC-19 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Light freezing rain occurred, with several reports of trace amounts of icing.

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 16-DEC-19 17:00:00 to 17-DEC-19 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Light freezing rain occurred, with a trained spotter in Elverson reporting 0.15 inches of ice accretion.

Winter Storm in BERKS, PENNSYLVANIA
From 16-DEC-19 17:00:00 to 17-DEC-19 18:00:00 (EST-5)
Crop damage: 0.00K
Reported by: Trained Spotter

Freezing rain occurred. Up to 0.25 inches of ice accretion was reported in District Twp. A number of trees were downed or damaged in the county.

Winter Storm in LEHIGH, PENNSYLVANIA
From 16-DEC-19 18:00:00 to 17-DEC-19 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Freezing rain fell, with ice accretion of up to 0.50 inches reported in Center Valley. Tree and power line damage was reported.

Winter Storm in MONROE, PENNSYLVANIA
From 16-DEC-19 21:00:00 to 17-DEC-19 18:00:00 (EST-5)
Crop damage: 0.00K
Reported by: ASOS

Freezing rain occurred, with 0.41 inches of ice accretion at the Mount Pocono ASOS (KMPO). Tree and power line damage was reported in the county.

Winter Weather in CARBON, PENNSYLVANIA
From 16-DEC-19 20:00:00 to 17-DEC-19 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trace amounts of icing were reported. It is likely some areas of light measurable accretion also occurred.

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 16-DEC-19 19:00:00 to 17-DEC-19 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Freezing rain occurred, with 0.21 inches of ice accretion reported in Forks Twp.

Winter Storm in UPPER BUCKS, PENNSYLVANIA
From 16-DEC-19 18:00:00 to 17-DEC-19 18:00:00 (EST-5)
Crop damage: 0.00K
Reported by: COOP Observer

Freezing rain occurred, with as much as 0.25 inches of ice accretion reported in Springtown Twp along with some tree damage.

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 16-DEC-19 17:00:00 to 17-DEC-19 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Freezing rain occurred, with up to 0.20 inches of ice accretion reported in Gilbertsville.

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 16-DEC-19 17:00:00 to 16-DEC-19 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trace amounts of icing were reported.