Coastal low pressure rapidly intensified Saturday night as it tracked northeast from off the Delmarva Coast...just southeast of the 40N/70W benchmark���and to southeast of Cape Cod by Sunday morning. This was in response to a powerful upper low approaching and then crossing south of the area. The track of low pressure to the southeast of the region and stubborn placement of arctic high pressure over the Northern US Plains and Southern Canadian Plains...ridging eastward...made for the ideal setup for heavy snow across most of the region. The rapid intensification of low pressure created blizzard or near blizzard conditions over Long Island for several hours with northeast winds of 15 to 25 mph and gusts 35 to 45 mph���and visibilities below �� mile. Near whiteout conds were experienced across Suffolk County during the height of the storm. Snowfall rates of 2 to 4 inches per hour occurred with an intense mesoscale band that developed S of the region���pivoted northwest into West/Central Long Island���and then slowly pulled east through the overnight. Snow totals increased rapidly from northwest to southeast across the region...with 3 to 6 inches across Orange County���around 1 ft across the NYC metro���and around 2 ft across Suffolk County.

Heavy Snow in SOUTHERN WESTCHESTER, NEW YORK
From 19-DEC-09 15:00:00 to 20-DEC-09 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in NORTHERN WESTCHESTER, NEW YORK
From 19-DEC-09 16:00:00 to 20-DEC-09 07:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in RICHMOND (STATEN IS.), NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in NEW YORK (MANHATTAN), NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in NASSAU, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in KINGS (BROOKLYN), NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in QUEENS, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in BRONX, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in NORTHWEST SUFFOLK, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Blizzard in NORTHWEST SUFFOLK, NEW YORK
From 19-DEC-09 23:00:00 to 20-DEC-09 02:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in NORTHEAST SUFFOLK, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in SOUTHEAST SUFFOLK, NEW YORK
From 19-DEC-09 13:00:00 to 20-DEC-09 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Snow in SOUTHWEST SUFFOLK, NEW YORK
From 19-DEC-09 12:00:00 to 20-DEC-09 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Blizzard in SOUTHWEST SUFFOLK, NEW YORK
From 19-DEC-09 23:00:00 to 20-DEC-09 02:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations