Quick 3:45 AM update on the late-week storm:
The details for Long Island are in the forecast below, but the Wind Advisory takes effect at Noon today and ends at midnight for wind gusts as high as 40 to 50 mph from the NW. It will turn sharply colder this evening and temperatures by early tomorrow morning will be mostly between 18 and 22 degrees on Long Island with wind chill temperatures between 0 and 10 degrees. Some light rain or snow showers Tuesday night into Wednesday morning.
It looks like high pressure to the north may prevent the late-week storm from making it into central to northern New England, but there is still some uncertainty there. For Long Island, it will be mostly rain from Thursday morning into Friday morning, but it's possible that some wet snow mixes in near the end on Friday between late morning and mid-afternoon. I will have more updates going forward, as now with the time-change, the ensembles matrix isn't even out yet.
LONG ISLAND FORECAST:
*A Wind Advisory has been issued for all of Long Island for today from Noon to midnight tonight for northwest wind gusts as high as 40 to 50 mph*
Today: Sunny in the morning and partly cloudy in the afternoon and becoming increasingly windy in the afternoon with highs in the upper 40's. Wind out of the WNW to NW at 15 to 25 mph with some gusts over 40 mph possible by late afternoon. A brief shower can't be ruled out in the mid to late afternoon as the front comes through. Temperatures will drop quickly in the evening.
Tonight: Becoming mostly clear, windy, and very cold with lows of 18 to 22 degrees with wind chill temperatures bottoming out around 5 to 10 degrees. Wind out of the NW to NNW with gusts up to 40 mph early and then diminishing somewhat after midnight.
Tomorrow: Very cold start with wind chill temperatures around 5 to 10 degrees early. Mostly sunny and windy with highs only in the mid 30's. Wind out of the NW to NNW at 15 to 25 mph with gusts up to 30 mph in the morning.
Tuesday: Mostly cloudy with a slight chance of a rain or snow shower by late afternoon. Highs around 40 degrees.
Tuesday night: Cloudy with a 60% chance of rain or snow showers. Lows in the low 30's.
Wednesday: Rain and/or snow showers possible in the morning and then mostly cloudy in the afternoon with highs in the mid to upper 40's.
Thursday: Cloudy with an 80% chance of rain with highs around 50 degrees.
Friday: Rain tapering off to showers and possibly ending in the early afternoon. Some wet snow could mix in at times, but no accumulations. Highs in the low 40's.
- 1st image: Projected wind chill temperatures at 7 AM tomorrow from the NAM
- 2nd image: Projected storm locations at 2 PM Friday from the Euro ensemble members
- 3rd image: Projected snowfall through 8 AM Saturday from the Euro ensemble mean
- 4th and 5th images: Maps from the Euro for Friday at 8 AM and 2 PM, respectively
- 6th image: Projected temperatures for Long Island for the next 10 days from the NWS model blend