Winter Storm Watch continues as some uncertainty remains:
I have posted all of the snow maps below, and it still generally looks like 4 to 8 inches of snow for Long Island, but possibly continuing into Friday afternoon. The Winter Storm Watch has been extended until 4 PM Friday to account for the potential for the extended period of snow. The amount of sleet mixing in during Thursday night is the biggest uncertainty. Also, the heaviest snow should remain offshore, so it might be an extended period of moderate snow. To upgrade to a Winter Storm Warning, the NWS needs to feel confident in 6 inches or more of snow in a 12-hour period or 8 inches or more of snow in a 24-hour period. As of now, there isn't enough confidence in either scenario, but later this afternoon they will probably upgrade it to a Winter Storm Warning. The start time is tomorrow morning between 7 and 10, but it should be light at the beginning. It will be a dry snow tomorrow as temperatures will mostly be in the upper 20's on Long Island. I will have many more updates today into tonight.
LONG ISLAND FORECAST:
Today: Mostly sunny with a diminishing wind by late afternoon with highs in the low 30's. Wind out of the NW in the morning at 15 to 20 mph and then diminishing to less than 10 mph by late afternoon
Tonight: Increasing clouds and cold with lows mostly in the low 20's and light winds of less than 10 mph, but some upper teens are possible in the Pine Barrens area of Suffolk.
Tomorrow into tomorrow night: Snow developing between 7 AM and 10 AM and continuing through the day. It may mix with or change to sleet at night. Total accumulations by late tomorrow night of 5 to 7 inches with slightly lower amounts for southeastern Suffolk. Highs in the upper 20's to close to 30 degrees tomorrow and slowly rising to the low 30's by Friday morning. Wind out of the NE at 10 to 20 mph.
Friday: Periods of light sleet or snow in the morning with snow showers still possible into the afternoon. Additional accumulations of an inch or so are possible. Highs in the low to mid 30's.
Saturday: Becoming mostly sunny and breezy with highs in the low 30's. Wind gusts up to 20 mph from the NW.
Sunday: Mostly sunny with highs in the low to mid 30's.
Monday: A chance of light snow in the morning changing to rain in the afternoon with highs in the low 40's.
- 1st image: Projected snowfall through 7 PM Friday from the National Weather Service
- 2nd image: Projected precipitation from Wednesday morning to Saturday morning from the Weather Prediction Center
- 3nd image: Projected snowfall through 1 PM Friday from the NAM model
- 4th to 6th images: Projected snowfall through 7 AM Saturday from the NWS model blend, Euro, and Euro ensemble mean
- 7th to 9th images: Maps from the NAM for tomorrow at 8 AM, 1 PM, and 6 PM
- 10th image: Projected temperatures for Long Island for the next 10 days from the NWS model blend