Weak low pressure passed offshore of the mid-Atlantic on February 18. Another weak, secondary wave of low pressure tracked along a similar path along a frontal zone trailing behind the primary low on the 19th. Strong high pressure over New England provided a cold air mass over the mid-Atlantic, leading to wintry precipitation as these areas of low pressure tracked offshore. The heaviest precipitation occurred with the primary wave on the 18th, with many areas seeing snow, some locally heavy, with a change to sleet and rain towards coastal areas. A narrow but intense band of precipitation provided a maximum in snowfall over portions of southeast Pennsylvania and central New Jersey. By the overnight of the 18th and into the 19th, precipitation became lighter, with a mix of light snow and light freezing rain or drizzle providing some additional accumulations and impacts. The system finally pulled away entirely by the late afternoon and evening of the 19th.

Winter Weather in SUSSEX, NEW JERSEY
From 18-FEB-21 08:30:00 to 19-FEB-21 17:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Light snow fell. The highest report, which came over a period of around 36 hours with multiple starts and stops, was 5.6 inches in Andover. Other reports of 3 to 4 inches were received from the county.

Winter Weather in WARREN, NEW JERSEY
From 18-FEB-21 07:00:00 to 19-FEB-21 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snow fell. A COOP observer near Holland Twp reported 5.3 inches of snow. Several other 4 to 5 inch reports were received, which came over a near 36 hour period with multiple starts and stops.

Winter Weather in MORRIS, 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

Light snow fell. A trained spotter in Green Pond reported 5.1 inches of snow. Several other 4 to 5 inch reports were received from the county over a period of about 36 hours with multiple starts and stops.

Winter Weather in HUNTERDON, 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: COOP Observer

Wintry mixed precipitation fell. By the end of the event, a COOP observer near Cloverhill had reported 5.7 inches of snow. A trained spotter near Readington Twp also reported 0.10 inches of ice accretion.

Winter Storm in SOMERSET, 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: Public

A mix of snow and freezing rain fell, mainly during the day and night of the 18th but with a little additional snow on the 19th. A report of 4.5 inches of snow was received from near Bridgewater, with 0.08 inches of ice accretion at the Somerset Airport (KSMQ) ASOS.

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

Wintry mixed precipitation fell. A band of heavy snow impacted the county on the morning of the 18th. This was followed by a lengthy period of light freezing rain and drizzle later that day and overnight, with a bit of additional light snow on the 19th. By the end of the event, a maximum storm total snowfall report of 10.0 inches was received from a trained spotter near Prospect Park, with several other 6 to 9 inch reports. The Trenton Mercer Airport (KTTN) ASOS also measured 0.39 inches of ice accretion.

Winter Storm in MIDDLESEX, 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

Wintry mixed precipitation fell, including a band of heavy snow which impacted the county on the morning of the 18th. A trained spotter in Manalapan Twp reported a storm total snowfall of 9.5 inches. A COOP observer near Milltown also reported 0.04 inches of ice accretion, mainly from light freezing rain and drizzle on the overnight of the 18th.

Winter Storm in WESTERN MONMOUTH, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 20:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wintry mixed precipitation fell, including a band of heavy snow on the morning of the 18th and light freezing rain and drizzle mainly on the overnight of the 18th. A trained spotter in Colts Neck reported a storm total snowfall of 9.8 inches. Several other reports of 6 to 9 inches were received. A trained spotter in Holmdel also reported 0.15 inches of ice accretion.

Winter Storm in EASTERN MONMOUTH, NEW JERSEY
From 18-FEB-21 06:30:00 to 19-FEB-21 20:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wintry mixed precipitation fell, including a band of heavy snow on the morning and midday hours of the 18th. A COOP observer near Long Branch reported 8.8 inches of storm total snow accumulation. Some light freezing rain or drizzle may also have occurred, mainly on the overnight of the 18th.

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

Wintry mixed precipitation fell. A heavy snow band on the morning of the 18th clipped far northwestern portions of the county. Lighter snow and sleet fell elsewhere, followed by light freezing rain and drizzle on the overnight of the 18th and a bit of additional light snow on the 19th. A storm total snowfall report of 6.4 inches was received from Delanco, and a trained spotter in Bordentown reported 6.3 inches. The South Jersey Regional Airport (KVAY) ASOS measured 0.15 inches of ice accretion.

Winter Weather in SOUTHEASTERN BURLINGTON, NEW JERSEY
From 18-FEB-21 06:00:00 to 19-FEB-21 20:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Light wintry mixed precipitation fell over a prolonged period from the morning of the 18th through the evening of the 19th. No direct observations were received. Observations from surrounding areas suggest 2 to 3 inches of snow and sleet (mainly during the day on the 18th) and up to a tenth of an inch of glaze ice (mainly on the overnight of the 18th) likely occurred.

Winter Weather in WESTERN OCEAN, NEW JERSEY
From 18-FEB-21 06:00:00 to 19-FEB-21 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wintry mix of snow, sleet, and freezing rain fell over a prolonged period. By the end of the approximately 36 hour event, a trained spotter near Jackson reported a storm total snowfall of 4.2 inches and 0.20 inches of ice accretion.

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

Light wintry mixed precipitation fell over a long duration, with multiple starts and stops. By the end of the event, a report of 3.0 inches of snow was received from Seaside Heights, with 2.7 inches in Point Pleasant Beach. A light glaze of ice may have also occurred on the overnight of the 18th.

Winter Weather in CAMDEN, NEW JERSEY
From 18-FEB-21 06:00:00 to 19-FEB-21 19:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A light wintry mix of precipitation fell over a long duration. A COOP observer near Pennsauken reported 2.5 inches of total snow and sleet. Numerous observations from surrounding counties suggest some icing occurred as well, with likely around a tenth of an inch of glaze ice.

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

Light wintry mixed precipitation fell, with snow and sleet on the 18th transitioning over to light freezing rain and drizzle during the night, with some additional light snow on the 19th. A storm total snowfall report of 3.2 inches was received from Mantua. A trained spotter in Washington Twp reported 0.10 inches of glaze ice accretion.

Winter Weather in SALEM, NEW JERSEY
From 18-FEB-21 06:00:00 to 19-FEB-21 18:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Light wintry mixed precipitation fell, with snow and sleet on the 18th transitioning over to light freezing rain and drizzle during the night, with some additional light snow on the 19th. A storm total snowfall report of 3.5 inches was received from Pennsville, and observations from surrounding areas suggest up to a tenth of an inch of glaze ice likely occurred.

Winter Weather in WESTERN ATLANTIC, NEW JERSEY
From 18-FEB-21 06:00:00 to 19-FEB-21 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light wintry mixed precipitation fell, with snow and sleet on the 18th transitioning over to light freezing rain and drizzle during the night, with some additional light snow on the 19th. A COOP observe in Estell Manor reported 1.0 inch of snow and 0.10 inches of ice accretion. The Atlantic City International Airport saw 0.2 inches of snow and 0.18 inches of ice accretion.

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

Light wintry mixed precipitation fell, with snow and sleet on the 18th transitioning over to light freezing rain and drizzle during the night, with some additional light snow on the 19th. No measured snowfall reports were received, but it is likely 1 to 2 inches of snow and sleet accumulated before a change to freezing rain and drizzle. From there, the Millville Municipal Airport (KMIV) ASOS measured 0.29 inches of ice accretion.