Low pressure developed along a cold front over the Middle Atlantic early Thursday, February 9th. The low rapidly intensified as it moved off the Delmarva coast in the morning and then to the south and east of Long Island late morning into the afternoon. The low brought blizzard conditions to Long Island and portions of the Lower Hudson Valley. Heavy snow and strong winds also occurred over the New York City Metro.
The blizzard brought delays and cancellations to the regions transportation systems as well as numerous accidents on roadways. The Long Island Railroad had system wide delays and at least 20 trains were cancelled. Several hundred rescues were performed by police and fire departments on Long Island.
The storm also cancelled approximately 2,000 flights at Kennedy and La Guardia Airports.

Blizzard in SOUTHEAST SUFFOLK, NEW YORK
From 09-FEB-17 09:53:00 to 09-FEB-17 15:53:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Gabreski Airport (Westhampton Beach) ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and afternoon on February 9th.

Winter Storm in BRONX, NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter at the Bronx Zoo measured 10.6 inches of snow. A cooperative observer in Parkchester measured 9.5 inches of snow.

Blizzard in NORTHWEST SUFFOLK, NEW YORK
From 09-FEB-17 08:00:00 to 09-FEB-17 16:22:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Nearby MacArthur and Republic Airport ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and afternoon on February 9th.

Blizzard in SOUTHERN WESTCHESTER, NEW YORK
From 09-FEB-17 09:56:00 to 09-FEB-17 12:56:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

White Plains Airport ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on February 9th.

Winter Storm in RICHMOND (STATEN IS.), NEW YORK
From 09-FEB-17 03:30:00 to 09-FEB-17 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 7 to 9 inches of snowfall.

Winter Storm in KINGS (BROOKLYN), NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, CoCoRaHS observer, and the public reported 7 to 10 inches of snowfall.

Winter Storm in SOUTHERN QUEENS, NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 18:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

JFK Airport reported 8.3 inches of snow. Amateur radio and CoCoRaHS observers also reported 8 to 11 inches of snowfall.  Winds also gusted to 48 MPH at JFK Airport at 6:31 pm.

Winter Storm in NORTHERN WESTCHESTER, NEW YORK
From 09-FEB-17 03:30:00 to 09-FEB-17 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, amateur radio, and the public reported 9 to 12 inches of snowfall.

Winter Storm in ORANGE, NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 14:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 11 to 13 inches of snowfall.

Winter Storm in PUTNAM, NEW YORK
From 09-FEB-17 04:30:00 to 09-FEB-17 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 11 to 13 inches of snowfall.

Winter Storm in ROCKLAND, NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 15:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported 8 to 9 inches of snowfall.

Winter Storm in NORTHERN QUEENS, NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 17:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

LaGuardia Airport reported 10 inches of snow. Amateur radio and CoCoRaHS observes reported 10 to 12 inches of snow. Winds also gusted to 44 mph at LaGuardia airport at 5:04 pm.

Winter Storm in NORTHWEST SUFFOLK, NEW YORK
From 09-FEB-17 05:00:00 to 09-FEB-17 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, NWS Employees, and the Public reported 12 to 16 inches of snowfall. Winds also gusted to 57 mph at Eatons Neck at 12:20 pm.

Winter Storm in NEW YORK (MANHATTAN), NEW YORK
From 09-FEB-17 04:00:00 to 09-FEB-17 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Central Park reported 9.4 inches of snow.

Winter Storm in NORTHERN NASSAU, NEW YORK
From 09-FEB-17 05:00:00 to 09-FEB-17 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 10 to 13 inches of snowfall. Winds gusted to 50 mph in Oyster Bay at 12:41 pm, 45 mph at nearby Farmingdale Airport at 1:52 pm.

Winter Storm in SOUTHWEST SUFFOLK, NEW YORK
From 09-FEB-17 05:00:00 to 09-FEB-17 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Islip Airport reported 14.3 inches of snow. Trained spotters, NWS Employees, and the Public reported 12 to 16 inches of snowfall. Winds also gusted to 48 mph at the Islip Airport at 1:47 pm.

Winter Storm in SOUTHERN NASSAU, NEW YORK
From 09-FEB-17 05:00:00 to 09-FEB-17 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, amateur radio, and the public reported 8 to 14 inches of snowfall. Winds gusted to 51 mph at Point Lookout at 12:33 pm and 45 mph at nearby Farmingdale Airport at 1:52 pm.

Winter Storm in NORTHEAST SUFFOLK, NEW YORK
From 09-FEB-17 06:00:00 to 09-FEB-17 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the Public reported 10 to 13 inches of snowfall. Winds also gusted to 50 mph at Sag Harbor at 1:00 pm, and to 45 mph at Orient at 12:05 pm.

Winter Storm in SOUTHEAST SUFFOLK, NEW YORK
From 09-FEB-17 06:00:00 to 09-FEB-17 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters, an NWS Employee, and the Public reported 10 to 13 inches of snowfall. Winds also gusted to 66 mph at Mecox at 12:25 pm, 61 mph in the Hampton Bays at 12:35 pm, and 49 mph at Westhampton Beach Airport at 12:26 pm.

Winter Storm in SOUTHERN WESTCHESTER, NEW YORK
From 09-FEB-17 03:30:00 to 09-FEB-17 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters and the public reported 9.5 to 12 inches of snowfall. Winds gusted to 43 mph at White Plains Airport at 12:46 pm.

Blizzard in NORTHERN NASSAU, NEW YORK
From 09-FEB-17 07:33:00 to 09-FEB-17 14:11:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Nearby Republic Airport ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on February 9th.

Blizzard in SOUTHWEST SUFFOLK, NEW YORK
From 09-FEB-17 08:00:00 to 09-FEB-17 16:22:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

MacArthur and Republic Airport ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and afternoon on Feb 9th.

Blizzard in SOUTHERN NASSAU, NEW YORK
From 09-FEB-17 07:33:00 to 09-FEB-17 14:11:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Nearby Republic Airport ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on February 9th.

Blizzard in NORTHEAST SUFFOLK, NEW YORK
From 09-FEB-17 09:53:00 to 09-FEB-17 15:53:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Nearby Gabreski Airport (Westhampton Beach) ASOS observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and afternoon on February 9th.