A long duration wintry weather event occurred on Thursday, February 18, 2021 through Friday, February 19, 2021. A frontal wave of low pressure developed off the Middle Atlantic coast on February 18, 2021. The frontal wave combined with a strong upper level to produce a brief period of moderate to heavy snowfall during the morning and early afternoon on Thursday, February 18, 2021. The snow also mixed with sleet at times during the late morning and early afternoon hours across portions of northeast New Jersey. Snowfall rates of 1 inch per hour occurred during this time frame. The precipitation became light and changed to spotty freezing rain and freezing drizzle during the late afternoon through the overnight hours on February 18, 2021. The overall weather pattern did not change to much on Friday, February 19, 2021. Weak waves of low pressure continued to track along the frontal zone off the Middle Atlantic coast, combining with the lingering strong jet stream aloft to produce periods of mainly light snow. The light snow persisted into the early evening hours before tapering off during the evening on Friday, February 19, 2021.

Winter Weather in EASTERN PASSAIC, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Wayne reported 5.0 inches of snow.

Winter Weather in WESTERN PASSAIC, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Bloomingdale reported 4.8 inches of snow and a trace of freezing rain.

Winter Weather in EASTERN BERGEN, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 4 to 6 inches of snow. A trained spotter reported a locally higher amount of 6.5 inches in Westwood.

Winter Weather in WESTERN BERGEN, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 4 to 6 inches of snow.

Winter Weather in EASTERN ESSEX, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 19:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 3.5 inches of snow in Nutley.

Winter Weather in WESTERN ESSEX, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 18:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 3 to 5 inches of snow. The Caldwell Airport ASOS recorded 0.14 inches of freezing rain.

Winter Weather in EASTERN UNION, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 19:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 3 to 5 inches of snow.

Winter Weather in EASTERN UNION, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 18:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Official NWS Observation at the Newark International Airport was 5.3 inches of snow.

Winter Weather in HUDSON, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS and trained spotters reported 4.0 to 5.0 inches of snow.