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 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 evening hours before tapering off just before midnight on Friday, February 19, 2021.

Winter Weather in NORTHERN FAIRFIELD, CONNECTICUT
From 18-FEB-21 10:00:00 to 19-FEB-21 19:00:00 (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. The Danbury Airport ASOS recorded 0.03 inches of freezing rain.

Winter Weather in SOUTHERN MIDDLESEX, CONNECTICUT
From 18-FEB-21 10:30:00 to 19-FEB-21 22:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 4 to 6 inches of snow.

Winter Weather in NORTHERN NEW LONDON, CONNECTICUT
From 18-FEB-21 11:30:00 to 19-FEB-21 23:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 3.5 to 6.0 inches of snow.

Winter Weather in SOUTHERN NEW LONDON, CONNECTICUT
From 18-FEB-21 11:00:00 to 19-FEB-21 23:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 4 to 6 inches of snow. A locally higher amount of 6.8 inches of snow was reported in New London. The Groton Airport ASOS recorded 0.06 inches of freezing rain.

Winter Weather in SOUTHERN FAIRFIELD, CONNECTICUT
From 18-FEB-21 09:30:00 to 19-FEB-21 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Official NWS Observation at Bridgeport Airport was 4.1 inches of snow. The Bridgeport Airport ASOS recorded 0.16 inches of freezing rain.

Winter Weather in NORTHERN NEW HAVEN, CONNECTICUT
From 18-FEB-21 11:00:00 to 19-FEB-21 21:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, CoCoRaHS, and the public reported 4 to 6 inches of snow. The New Haven Airport ASOS recorded 0.11 inches of freezing rain.

Winter Weather in SOUTHERN NEW HAVEN, CONNECTICUT
From 18-FEB-21 10:00:00 to 19-FEB-21 22:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 4 to 6 inches of snow. The Meriden Airport ASOS reported 0.04 inches of freezing rain.

Winter Weather in NORTHERN MIDDLESEX, CONNECTICUT
From 18-FEB-21 11:00:00 to 19-FEB-21 22:30:00 (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.