Low pressure developed over the Ohio Valley and Middle Atlantic on Sunday, January 31, 2021. The low then consolidated along the Middle Atlantic coast early on Monday, February 1, 2021 and intensified as it slowly tracked to the north-northeast. The low meandered slowly north as it moved along the northeast and New England coast later on Monday February 1, 2021 through Wednesday, February 3, 2021. The low brought a major winter storm to northeast New Jersey, with the most significant impacts occurring on Monday, February 1, 2021. 3 to 6 inches of snow had already accumulated by the start of the morning commute. Near blizzard conditions then occurred through the rest of the morning into the early afternoon with snowfall rates of 1 to 3 inches per hour. Strong winds combined with these heavy snow rates to produce visibilities one quarter mile or less at times. The heavier bands of snow lifted north across the rest of northeast New Jersey in the afternoon and evening. Lighter snow bands then lingered intermittently through the early morning hours on February 3, 2021. Snowfall totals ranged 15 to 20 inches of snow with some locations receiving around two feet. Winds gusted 40 to 55 mph at times on Monday, February 1, 2021, which caused power outages. Travel was also severely impacted as many flights were cancelled and travel by train was suspended. COVID testing and vaccination sites were closed. Impacts were limited on February 2, 2021 and February 3, 2021 as the snow was largely light.

Winter Storm in WESTERN UNION, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 19.0 inches of snow in Berkeley Heights, 17.5 inches of snow in Garwood, and 17.2 inches of snow in Westfield. A 2 inch per hour snowfall rate was measured at the nearby Newark Liberty International Airport between 10 am and 11 am and between 11 am and 12 pm.  The nearby Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in EASTERN UNION, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Official NWS Observation at the Newark Liberty International Airport was 18.2 inches of snow. A trained spotter in Elizabeth reported 17.8 inches of snow.  A 2 inch per hour snowfall rate was measured at the Newark Liberty International Airport between 10 am and 11 am and between 11 am and 12 pm.  The Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in WESTERN ESSEX, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Bloomfield reported 20.5 inches of snow. A trained spotter in North Caldwell reported 17.3 inches of snow. The public reported 18 to 21 inches of snow. The nearby Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in EASTERN ESSEX, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 15 to 20 inches of snow. The nearby Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in EASTERN PASSAIC, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Wayne reported 15 inches of snow. The nearby Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in WESTERN PASSAIC, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Bloomingdale reported 26.2 inches of snow. The public reported 24.7 inches of snow 3 miles northeast of West Milford. A trained spotter 3 miles west-southwest of West Milford reported 24.7 inches of snow.

Winter Storm in EASTERN BERGEN, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters 1 mile east-southeast of Park Ridge and in Westwood reported 23 inches and 22 inches of snow respectively. Other trained spotters reported 17 to 21 inches of snow.

Winter Storm in WESTERN BERGEN, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters in Franklin Lakes and Ridgewood reported 20.6 and 20.1 inches of snow respectively. Other trained spotters reported 17 to 21 inches of snow. The nearby Newark Liberty International Airport ASOS measured a 41 mph wind gust at 2:51 pm on February 1, 2021.

Winter Storm in HUDSON, NEW JERSEY
From 01-FEB-21 00:00:00 to 03-FEB-21 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A COOP Observer in Harrison reported 18 inches of snow.  A trained spotter in Hoboken reported 17 inches of snow.  A WeatherFlow Mesonet Station in Bayonne measured a 41 mph wind gust at 5:17 am on February 1, 2021.