Weak high pressure and a marginally cold air mass was locked into the northeast with blocking to the north across Eastern Canada, while low pressure over the Midwest moved east and redeveloped off the Northern Mid Atlantic coast. This led to the first widespread accumulating snowfall across the CWA.

Winter Weather in SOUTHWEST SUFFOLK, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

An NWS employee reported 1.8 inches in Bay Shore and a trained spotter reported 2.0 inches in Ronkonkoma. Islip airport reported 2.7 inches of snow.

Winter Weather in SOUTHEAST SUFFOLK, NEW YORK
From 27-FEB-23 21:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A COOP observer reported 4.4 inches in Bridgehampton along with a public report 4.5 inches in Shirley.

Winter Weather in SOUTHERN NASSAU, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 07:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A Cocorahs observer reported 3.5 inches at 0.2 SSE Albertson along the northern edge of the zone, and 1.0 inches in Wantagh. A trained spotter reported 2.1 inches further north in New Hyde Park.  Mainly 1 to 2 inches fell across Southern Nassau as temperatures were mainly just above freezing.

Winter Weather in NEW YORK (MANHATTAN), NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

A general 1 to 3 inches fell across Manhattan on non cement surfaces as temperatures will mainly a degree or so above freezing. Central Park reported 1. 8 inches of snow, and a Cocorahs observer reported 3.0 inches at 1 WNW Fordham.

Winter Weather in NORTHERN QUEENS, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

A general 2 to 3 inches of snow was reported across the zone. LaGuardia reported 2.3 inches of snow, and a public report of 3.2 inches in Whitestone. A Cocorahs report came in at 2.5 inches at 0.3 SE Little Neck.

Winter Weather in SOUTHERN QUEENS, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

A general 1 to 2 inches of snow fell across much of the zone. Kennedy airport reported 1.5 inches of snow, while Howard Beach reported 2.0 inches of snow from a Cocorahs report.

Winter Weather in KINGS (BROOKLYN), NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Light accumulations of 1 to 2 inches of snow fell across Brooklyn. Broadcast media reported 1.4 inches of snow at 1 SSW Flatbush.

Winter Weather in BRONX, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Not many reports came in for this county / zone, but the few reports received included a public report of 5.6 inches at 1 NE Fordham and 4.5 inches in Yonkers just above the northern border of the zone. Amounts in the zone fell below warning criteria. it appears amounts were on the order of 4 to 5 inches.

Heavy Snow in ORANGE, NEW YORK
From 27-FEB-23 19:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Widespread 6+ inch snow reports came in across the county. Trained spotters reports included 6.7 inches from Monroe, 6.4 inches in Walden, 8.1 inches from Highland Mills, and 7.0 inches in Newburgh. Cocorahs reports included 8.5 inches in Port Jervis and 6.5 inches in Warwick. General public reports included 7.5 inches in Chester and Pine Bush, 7.0 inches in New Windsor, and 6.3 inches in Cornwall-on-Hudson.

Heavy Snow in PUTNAM, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy snow was reported across the county. Snowfall reports included 6.5 inches at 2W Putnam Valley, 6.0 inches from Cold Spring, and 5.0 inches from COOP at Carmel Hamlet.

Heavy Snow in NORTHERN WESTCHESTER, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell across the northern half of the county. A Cocorahs report had 6.5 inches in Katonah, a COOP report came in with 6.0 inches in Shrub Oak, a trained spotter reported 6.0 inches in White Plains, and public reports of 6.0 inches at 2 NE Somers and 5.7 inches at Croton-on-Hudson.

Heavy Snow in ROCKLAND, NEW YORK
From 27-FEB-23 19:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy snow fell across the county into the morning rush hour. Snowfall reports of 6.1 inches in Stony Point via Cocorahs, 5.9 inches 1.7 SSW Spring Valley via Cocorahs, and 5.7 inches at 0.6 SE New Hempstead via Cocorahs. Also a trained spotter reported 5.6 inches at 1 WSW New City.  Most of these reports came in likely after some compaction of the snow took place as temperatures were marginal and right near freezing.

Winter Weather in SOUTHERN WESTCHESTER, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The majority of snow reports ranged from 4 to 5 inches across the southern portion of the county. A trained spotter reported 5.3 inches in Hartsdale, 5.0 inches in Peekskill, and 4.5 inches in Yonkers. Public reports included 5.0 inches in Armonk, 4.8 inches at 1 WSW New Rochelle, with a Cocorahs report of 5.3 inches from Armonk. Thus, just short of reaching warning criteria.

Winter Weather in NORTHERN NASSAU, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Cocorahs observers reported 3.5 inches in Manhasset Hills, Herricks, and at 0.2 SSE Albertson which is at the southern border of zone.  The public reported 5.1 inches in Glen Cove.

Winter Weather in NORTHWEST SUFFOLK, NEW YORK
From 27-FEB-23 20:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 5.0 inches in Centereach, 5.0 inches in Smithtown, 4.5 inches in Farmingville, along with a COOP observer reporting 4.2 inches in Mt. Sinai. An NWS Employee reported 4.2 inches in Stony Brook, and Broadcast Media reported 3.5 inches in South Huntington.

Winter Weather in NORTHEAST SUFFOLK, NEW YORK
From 27-FEB-23 21:00:00 to 28-FEB-23 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 4.5 inches in Mattituck, along with a COOP observer reporting 4.5 inches in Orient Point. An NWS employee reported 3.8 inches in Sound Beach, along with a NWS Office report of 4.4 inches in Brookhaven Labs / Upton.