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Snowstorm update as snow totals increased for Long Island:

The National Weather Service has converted the rest of Long Island to a Winter Storm Warning with generally 10 to 13 inches for northern Nassau, 6 to 13 inches for southern Nassau and central and western Suffolk and 4 to 10 inches for eastern Suffolk (see snow map below). Wind gusts could be as high as 55 mph in eastern Suffolk, 50 mph for the rest of Long Island with the exception of northern Nassau, which could see gusts up to 45 mph.


The Euro overnight and its ensembles held their ground again regarding snowfall totals for Long Island. The higher resolution models are a little more divided, but generally show lower totals, especially for southern and eastern Suffolk.


See details in the forecast below, but the snow should start from around 3:30 PM to 6 PM from southwest to northeast on Long Island with a period of heavy snow on Long Island between around 8 PM and 1 AM or 2 AM before any potential change to sleet begins with near-blizzard conditions after around 10 PM when the wind really starts to increase.


LONG ISLAND FORECAST:


*The National Weather Service has issued a Winter Storm Warning for all of Long Island from 2 PM today to 1 PM tomorrow for 10 to 13 inches of snow for northern Nassau, 6 to 13 inches for southern Nassau and central to western Suffolk, and 4 to 10 inches for eastern Suffolk. Wind gusts up to 55 mph in eastern Suffolk, 50 mph in central to western Suffolk and southern Nassau, and 45 mph for northern Nassau.*

Today through tomorrow: Cloudy with snow developing between around 3:30 PM and 6 PM from southwest to northeast. Highs in the low to mid 30's. The snow will become heavy this evening and at night with most of the accumulations occurring by 2 AM before a potential mix with and change to sleet/rain for at least southeastern Suffolk and possibly working its way northwestward as temperatures rise into the mid 30's. The temperatures will drop below freezing by early Thursday morning with it going back to all snow and tapering off from west to east by late morning. The wind will be increasing this evening with gusts between around 10 PM and 10 AM up to 55 mph for eastern Suffolk, 50 mph for the rest of Long Island, except around 45 mph for northern Nassau with the wind being out of the ENE. It will shift to the NNE and N between around 5 AM and 8 AM tomorrow. See the snow map above for the projected snowfall amounts from the National Weather Service. Temperatures tomorrow will be steady in the low 30's with the wind slowly decreasing in the afternoon.

Friday: Mostly sunny and cold with highs in the low 30's.

Saturday: Mostly sunny and cold with highs in the low to mid 30's.

Sunday: Partly to mostly cloudy with highs around 40 degrees.

Monday: Partly cloudy with highs in the low 40's.


- 1st and 2nd images: Snow maps from the National Weather Service

- 3rd image: Maximum projected wind gusts through 7 PM Friday from the NWS

- 4th and 5th images: Snow maps from the HRRR and Euro

- 6th image: Projected temperatures for Long Island for the next 10 days from the National Weather Service model blend









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