Low pressure tracked just east of the Great Lakes from the overnight hours of February 15 into the morning of the 16th. The low produced widespread precipitation over the mid-Atlantic. The inland track of the low allowed warmer air to surge northward for locations east of the center. However, lingering sub-freezing surface temperatures were present in some areas following recent cold weather. This caused precipitation to fall as freezing rain in portions of the interior mid-Atlantic. A lack of high pressure to the north to lock in colder air caused a quick change to plain rain in many areas. However, portions of the interior, especially in the vicinity of higher terrain, experienced more significant icing as freezing rain lasted for longer.

Winter Weather in BERKS, PENNSYLVANIA
From 15-FEB-21 21:00:00 to 16-FEB-21 02:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light freezing rain fell. No direct measurements were received, but observations from surrounding areas suggest a trace to a few hundredths of an inch of glaze ice likely accumulated.

Winter Weather in LOWER BUCKS, PENNSYLVANIA
From 15-FEB-21 18:30:00 to 16-FEB-21 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light freezing rain fell. No direct measurements were received, but observations from surrounding areas suggest a trace to a few hundredths of an inch of glaze ice likely accumulated.

Winter Weather in WESTERN CHESTER, PENNSYLVANIA
From 15-FEB-21 21:00:00 to 16-FEB-21 02:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light freezing rain fell. No direct measurements were received, but observations from surrounding areas suggest a trace to a few hundredths of an inch of glaze ice likely accumulated.

Winter Weather in WESTERN MONTGOMERY, PENNSYLVANIA
From 15-FEB-21 19:00:00 to 16-FEB-21 02:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light freezing rain fell. No direct measurements were received, but observations from surrounding areas suggest a trace to a few hundredths of an inch of glaze ice likely accumulated.

Winter Weather in EASTERN MONTGOMERY, PENNSYLVANIA
From 15-FEB-21 20:30:00 to 16-FEB-21 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Light freezing rain fell. A trained spotter in Willow Grove reported a light glaze of ice.

Winter Weather in UPPER BUCKS, PENNSYLVANIA
From 15-FEB-21 17:30:00 to 16-FEB-21 02:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light freezing rain fell. No direct measurements were received, but observations from surrounding areas suggest a trace to a few hundredths of an inch of glaze ice likely accumulated.

Winter Weather in LEHIGH, PENNSYLVANIA
From 15-FEB-21 17:30:00 to 16-FEB-21 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Light freezing rain fell. The Lehigh Valley International Airport (KABE) ASOS reported 0.19 inches of ice accretion.

Winter Weather in NORTHAMPTON, PENNSYLVANIA
From 15-FEB-21 23:00:00 to 16-FEB-21 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Light freezing rain fell. A trained spotter in North Catasauqua reported 0.17 inches of ice accretion.

Ice Storm in CARBON, PENNSYLVANIA
From 15-FEB-21 23:00:00 to 16-FEB-21 05:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Freezing rain fell across the county. The highest observed report was from a trained spotter near Christmans, who reported 0.16 inches of ice accretion. However, reports from neighboring Monroe County suggest at least 0.50 inches of glaze ice likely accumulated in parts of the county. Several hundred customers also lost power.

Ice Storm in MONROE, PENNSYLVANIA
From 15-FEB-21 23:00:00 to 16-FEB-21 07:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Freezing rain fell, with significant ice accumulation. The Mount Pocono Airport (KMPO) ASOS reported 0.85 inches of ice accretion. Several hundred customers also lost power from tree limbs falling onto power lines.