A wave of low pressure developed along the Middle Atlantic coast during Thursday November 15, 2018. The low was associated with a closed upper level trough across the Midwest. As the trough translated eastward into Friday November 16, 2018, the low pressure moved up the northeast coast. The antecedent air mass ahead of the low was cold and dry for the middle of November with temperatures during the morning and afternoon of November in the upper 20s and low 30s.  The moisture associated with the trough and low pressure was able to produce moderate to heavy bands of snow as the precipitation began across the entire Tri-State area due to the cold air in place. Once the low drew warmer air from the south, the precipitation gradually changed to a wintry mix and then plain rain, especially for the New York City metro and Long Island.  The moderate to heavy wet snowfall significantly impacted the evening rush hour with 1-2 inch per hour snowfall rates.  Hundreds of trees, tree limbs, and branches were brought down by the weight of the snow, which caused many power outages. Numerous accidents were reported and many motorists were stranded on roads until the early morning hours the next day. There were over 1,000 flights cancelled at the New York City metro airports (Kennedy, La Guardia, and Newark).

Winter Storm in WESTERN PASSAIC, NEW JERSEY
From 15-NOV-18 13:30:00 to 16-NOV-18 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 6 to 7 inches of snow.

Winter Storm in EASTERN PASSAIC, NEW JERSEY
From 15-NOV-18 15:00:00 to 16-NOV-18 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 6 to 7 inches of snow.

Winter Storm in EASTERN ESSEX, NEW JERSEY
From 15-NOV-18 13:00:00 to 15-NOV-18 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The FAA contract observer at nearby Newark Airport reported 6.4 inches of snow. Trained spotters, social media, and the public reported 4 to 6 inches of snow. Impacts were widely felt across eastern Essex county with major disruption to the evening commute. Trees branches and limbs were downed due to the weight of the heavy wet snow. Nearby Newark airport reported 1-2 inch per hour snowfall rates at times during the evening commute.

Winter Storm in HUDSON, NEW JERSEY
From 15-NOV-18 13:00:00 to 15-NOV-18 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A COOP observer reported 5.8 inches of snow. The public reported 6 inches of snow in Kearny. Impacts were widely felt across Hudson county with major disruption to the evening commute. Trees branches and limbs were downed due to the weight of the heavy wet snow. One tree brought down power lines in 7th street and Willow Avenue in Hoboken. Nearby Newark airport reported 1-2 inch per hour snowfall rates at times during the evening commute.

Winter Storm in WESTERN BERGEN, NEW JERSEY
From 15-NOV-18 13:30:00 to 15-NOV-18 22:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 6 to 8 inches of snow.

Winter Storm in EASTERN BERGEN, NEW JERSEY
From 15-NOV-18 13:30:00 to 15-NOV-18 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and amateur radio reported 6 to 7 inches of snow.

Winter Storm in WESTERN UNION, NEW JERSEY
From 15-NOV-18 13:30:00 to 15-NOV-18 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and social media reported 6 to 7 inches of snow.

Winter Storm in EASTERN UNION, NEW JERSEY
From 15-NOV-18 13:00:00 to 15-NOV-18 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The FAA contract observer at Newark Airport reported 6.4 inches of snow. Trained spotters and social media reported 6 to 7 inches of snow. Impacts were widely felt across eastern Union county with major disruption to the evening commute. Trees branches and limbs were downed due to the weight of the heavy wet snow. Newark airport reported 1-2 inch per hour snowfall rates at times during the evening commute.

Winter Storm in WESTERN ESSEX, NEW JERSEY
From 15-NOV-18 13:30:00 to 15-NOV-18 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public and trained spotters reported 6 to 7 inches of snow.