Precipitation from a low pressure system moving north from the Tennessee River Valley began as snow early Monday as it ran into colder air established over the area the previous few days.  A strong southerly flow associated with this low brought with it very warm air, which turned the snow over to freezing rain, then plain rain, from south to north Monday night and early Tuesday. PennDOT lowered the speed limit to 45 mph on many area roads as well in advance of this storm.

Winter Weather in CARBON, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.2 inches of snow was reported from three separate CocoRaHS observers in the county before the changeover to freezing rain.  Between 0.10 and 0.25 inches of ice accumulation from freezing rain was reported in the area before the changeover to plain rain early Tuesday morning.

Winter Weather in MONROE, PENNSYLVANIA
From 15-FEB-16 10:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.7 inches of snow was reported in Analomink, 1.5 inches near Stroudsburg, and 1.3 inches in Tobyhanna.  Between 0.10 and 0.25 inches of ice accumulation from freezing rain was reported in the area before the changeover to plain rain early Tuesday morning.

Winter Weather in BERKS, PENNSYLVANIA
From 15-FEB-16 10:00:00 to 16-FEB-16 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.0 inches of snow was reported in Bernville and Reading, with 0.5 inches reported at Oley.  Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported in the area before the changeover to plain rain early Tuesday morning.

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
2.0 inches of snow was reported at near Harleysville, 1.7 inches near Pottstown, 1.0 inches near Hatfield, and 1.0 inches in Montgomeryville.  Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.4 inches of snow was reported in Glenmoore, 1.3 inches in Nottingham, and 0.8 inches in Atglen.  Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in EASTERN CHESTER, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.1 inches of snow was reported in West Chester, and 1.0 inches in Exton. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.0 inches of snow was reported near Gilbertsville, 1.7 inches near Pottstown, and 1.0 inches in Hatfield. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.0 inches of snow was reported in both Plymouth Meeting and Montgomeryville. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.0 inches of snow was reported in both Perkasie and Quakertown. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.5 inches of snow was reported in Croydon, 1.3 inches in Fallsington, and 1.3 inches in Furlong. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in DELAWARE, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 03:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.3 inches of snow was reported in Chadds Ford, and 1.0 inches in Drexel Hill.  Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in PHILADELPHIA, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 03:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.1 inches of snow was reported in the Rockledge section of the city, 1.0 inches at Philadelphia International Airport, 0.5 inches at Philadelphia Fire Station 54, and 0.4 inches at Philadelphia OEM headquarters on Spring Garden Street. Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported during the transition period to all rain.

Winter Weather in LEHIGH, PENNSYLVANIA
From 15-FEB-16 11:00:00 to 16-FEB-16 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow began Monday morning, then continued into the overnight hours. Temperatures abruptly rose above the freezing mark during the late overnight hours, changing precipitation over to all rain well before the Tuesday morning commute. Freezing rain occurred for several hours Monday night during the transition period.
1.2 inches of snow was reported at Lehigh Valley International Airport, and 1.0 inches was reported near Schnecksville.  Between 0.01 and 0.10 inches of ice accumulation from freezing rain was reported in the area before the changeover to plain rain early Tuesday morning.
Several traffic accidents occurred in Lehigh county with vehicles overturned in Upper Saucon Twp and Upper Nazareth Twp.