A historic and unprecedented early-season winter storm impacted the area on Saturday, October 29, with more than one foot of heavy wet snow falling on interior portions of the Lower Hudson Valley. This is the first time a winter storm of this magnitude has ever occurred in October.
Late Friday night, October 28, an area of low pressure emerged from the South Carolina coastal plain into the western Atlantic Ocean.  The low moved up the coast late Friday night into Saturday morning.  The low began to rapidly strengthen late Saturday morning when it was east of the Delmarva coast, and continued to strengthen as it passed south of Long Island Saturday night.  With water temperatures in the lower 60s, much of Long Island received mainly rainfall and up to 2 inches of rain during the event.  Areas just north and west of New York City, however, were just cold enough to support a heavy wet snow.  The heaviest snow fell across interior portions of the Lower Hudson Valley, with one foot or more of snowfall across highest elevations.  In addition to the heavy rain and snow...strong winds were experienced along the immediate coastline.
Thousands of people across southeast New York lost power during this event as heavy snow accumulated on trees that still had partial to full foliage during mid-autumn. This caused extensive felling of trees and limbs across the region and damage to power lines.

Winter Storm in NEW YORK (MANHATTAN), NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread tree damage and power outages occurred due to 2 to 4 inches of heavy wet snow. A significant number of trees came down across the county starting around 1 pm EST due to the combined heavy wet snow and 15 to 20 mph winds. Hundreds of trees and thousands of tree limbs were downed through the storm, especially in Central Park.

Heavy Snow in ORANGE, NEW YORK
From 29-OCT-11 11:00:00 to 30-OCT-11 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Widespread tree damage and power outages occurred due to 8 to 16 inches of heavy wet snow. The heavier amounts fell in the higher elevations. Specifically, in Warwick and Goshen numerous tree limbs were reported down by the afternoon of the 29th. In Blooming Grove, a tree was reported down on a car on Village Road. around 4 pm EST as well. In Slate Hill, Ridgebury Road between Country Road 12 and Greeves Road was closed for several hours due to numerous downed trees.

Winter Storm in NORTHERN QUEENS, NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A significant number of trees came down across the county starting around 1 pm EST due to the combination of 1 to 3 inches of heavy wet snow and 15 to 20 mph winds.  Hundreds of trees were downed through the storm.

Heavy Snow in SOUTHERN WESTCHESTER, NEW YORK
From 29-OCT-11 09:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Widespread tree damage and power outages occurred due to 6 to 10 inches of heavy wet snow. The heavier amounts fell in the higher elevations and away from the coast. In White Plains, a large tree limb was downed on Anderson Hill Road around 1243 pm EST, partially blocking it. Additionally, numerous trees and wires were reported down in Vernon Park and Mamaroneck between 2 and 3 pm EST.

Winter Storm in KINGS (BROOKLYN), NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A significant number of trees came down across the county starting around 1 pm EST due to the combination of 1 to 3 inches of heavy wet snow and 15 to 20 mph winds.  Hundreds of trees were downed through the storm.

Heavy Snow in ROCKLAND, NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Widespread tree damage and power outages occurred due to 4 to 8 inches of heavy wet snow. The heavier amounts fell in the higher elevations. In New City, downed trees blocked lanes on route 304 at Bardonia and Germonds around 230 pm EST. Meanwhile, numerous trees and tree limbs were downed in Tallman and Pomona by 4 pm EST.

Heavy Snow in PUTNAM, NEW YORK
From 29-OCT-11 11:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Widespread tree damage and power outages occurred due to 7 to 12 inches of heavy wet snow. The heavier amounts fell in the higher elevations. In Brewster, numerous large branches were downed with power outages by around 2 pm EST. While in Mahopac, spotters reported numerous larges branches and limbs down around the town during by the afternoon of the 29th.

Heavy Snow in NORTHERN WESTCHESTER, NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Widespread tree damage and power outages occurred due to 6 to 13 inches of heavy wet snow. The heavier amounts fell in the higher elevations. In Valhalla and Somers, numerous trees were reported down by the afternoon of the 29th.

Winter Storm in RICHMOND (STATEN IS.), NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread tree damage and power outages occurred due to 2 to 4 inches of heavy wet snow. A significant number of trees came down across the county starting around 1 pm EST due to the combined heavy wet snow and 15 to 20 mph winds.  Hundreds of trees were downed through the storm.
Specifically, numerous trees were reported down on Bard Avenue between Clove Road and Forest Avenue, with downed power lines on Victory Boulevard between I-278 and Bard Avenue by the late evening of the 29th.

Winter Storm in BRONX, NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Between 2 to 6 inches of heavy wet snow fell across the county, with the heaviest amounts across the northwest corner of the county. A significant number of trees came down across the county starting around 1 pm EST due to the combined heavy wet snow and 15 to 20 mph winds.  Hundreds of trees were downed through the storm.

Winter Storm in SOUTHERN QUEENS, NEW YORK
From 29-OCT-11 10:00:00 to 30-OCT-11 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A significant number of trees came down across the county starting around 1 pm EST due to the combined heavy wet snow and 15 to 20 mph winds.  Hundreds of trees were downed through the storm.