A complex, long duration winter storm impacted parts of the mid-Atlantic over the first three days of December. Impacts from the storm came mainly in two phases. Initially, weakening low pressure moved into the Midwest and Great Lakes region on December 1, bringing a widespread area of overrunning precipitation to the mid-Atlantic. Cold air in place ahead of the precipitation led to heavy mixed precipitation in interior areas, with most though not all areas eventually seeing a gradual change to rain. On December 2nd, developing secondary low pressure brought additional precipitation to the region, which took the form of rain changing to snow. The rapidly strengthening secondary low finally pulled away from the area during the early hours of December 3rd.

Winter Weather in WESTERN MONMOUTH, NEW JERSEY
From 02-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A light snowfall of around 2 to 3 inches occurred, with reports of 2.6 inches of snow near Red Bank and 2.5 inches of snow in Freehold.

Winter Storm in SOMERSET, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A mix of snow, sleet, and freezing rain occurred. The Somerville ASOS measured 0.24 inches of ice accretion. Up to 5.5 inches of snow were measured in Warrenville.

Winter Weather in MIDDLESEX, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall of up to 3.1 inches was measured near Woodbridge Twp.

Winter Weather in WESTERN OCEAN, NEW JERSEY
From 02-DEC-19 14:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Light snow occurred, with a trained spotter near Brick reporting 2.5 inches of snow.

Winter Weather in EASTERN MONMOUTH, NEW JERSEY
From 02-DEC-19 14:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snowfall occurred, with a maximum amount of 4.0 inches reported by a cooperative observer in Long Branch.

Winter Storm in MORRIS, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A heavy mix of snow, sleet, and freezing rain occurred. As much as 12.0 inches of snow were measured near Madison with a widespread 6 to 10 inches of snow. Up to 0.20 inches of glaze ice were also measured near Succasunna. Widespread power disruptions resulted from this winter storm.

Winter Storm in HUNTERDON, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A mix of snow, sleet, and freezing rain occurred. 4.8 inches of snow were measured near Pittstown, and a trained spotter in Readington Twp measured 0.10 inches of glaze ice.

Winter Weather in MERCER, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A light mix of snow, sleet, and freezing rain occurred. Trace amounts of glaze ice were reported in parts of the county. Up to 2.5 inches of snow was measured near Hopewell Twp.

Winter Storm in WARREN, NEW JERSEY
From 01-DEC-19 12:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A mix of snow, sleet, and freezing rain fell. A trained spotter in Hackettstown measured 5.0 inches of snow and 0.20 inches of glaze ice. Several other observations of 3 to 4 inches of snow and one to two tenths of an inch of glaze were reported in the county. Some power disruptions resulted.

Winter Storm in SUSSEX, NEW JERSEY
From 01-DEC-19 11:00:00 to 03-DEC-19 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A heavy mix of snow, sleet, and freezing rain occurred. The highest snowfall report was 14.3 inches in Highland Lakes, with a widespread 8 to 12 inches of snow throughout the county. Up to a third of an inch of glaze ice also fell. The Sussex Airport ASOS (KFWN) measured 0.32 inches of glaze ice. Widespread power outages occurred with a number of downed trees and wires, including the KFWN ASOS which failed late in the storm's duration due to loss of power.