Latest update on the storm with snow maps and the Long Island forecast:

- First, we have the colder air arriving today with temperatures falling all afternoon into the low to mid 30's on Long Island by late afternoon with wind gusts over 35 mph at times making it feel much colder. Then a very cold night ahead with lows mostly in the upper teens on Long Island with a decreasing wind.

- The weak system moving through tomorrow will likely produce snow showers tomorrow afternoon on Long Island with highs only around 30 degrees, and a light dusting in some spots can't be ruled out.

- Overall, not many changes with the storm for late Monday into Tuesday, although possibly a slightly warmer solution as both the GFS and Euro are showing lower snowfall amounts for southern New England, but let's see how it evolves. Nailing down the exact rain/snow line is difficult when it's 3 to 4 days away, but probably a period of snow on Long Island Monday evening, especially the north shore, with a light accumulation being possible before changing to sleet and then rain later at night. I have included some snow maps below, but the Euro snow map is a little funky, and I don't buy what it's showing for Long Island. The Model Blend probably gives a better indication.

***5:15 AM edit as the new GFS run is farther north with the snow. See the new snow map in the last image.***

LONG ISLAND FORECAST:

Today: Partly cloudy and very windy with temperatures falling into the mid 30's by late afternoon. Wind out of the NW at 20 to 25 mph with gusts over 35 mph.

Tonight: Mostly clear and very cold with a decreasing wind towards and after midnight with lows around 20 degrees in Nassau and in the mid to upper teens in Suffolk. Wind out of the NNW with gusts to 25 mph in the evening and then 10 to 15 mph after midnight.

Tomorrow: Increasing clouds early with a 60% chance of snow showers after 11 AM with highs around 30 degrees, and a light dusting of snow can't be ruled out in some spots. Wind around 5 mph from the NNE in the morning and S in the afternoon.

Tomorrow night: Slight chance of an early evening snow shower and then becoming partly cloudy with lows in the mid 20's. Wind generally light and variable.

Sunday: Partly to mostly cloudy with highs in the mid 40's. Wind out of the WSW at around 5 mph in the morning and 10 to 15 mph in the afternoon.

***There is some uncertainty with the exact track and therefore the rain/snow line for the storm for later on Monday into Tuesday, so stay tuned as there could be changes to the forecast***

Monday: Increasing clouds with a mixture of rain/ sleet/ snow developing around late afternoon to early evening and probably becoming all snow for at least a few to possibly several hours (especially on the north shore) with some light accumulation possible before changing to sleet and then likely rain overnight. Afternoon highs around 41 degrees with temperatures dropping into the low to mid 30's at night. Wind out of the NE at 5 to 10 mph in the morning and then out of the ESE at 10 to 15 mph in the afternoon.

Tuesday: Showers ending around late morning to mid afternoon and then decreasing clouds late with highs around 40 degrees. Wind out of the NNE in the morning and WNW in the afternoon at 10 to 15 mph.

Wednesday: Mostly sunny with highs in the mid 40's. Wind out of the WNW at 5 to 10 mph.

- 1st image: My 5 day forecast for Long Island

- 2nd image: Future radar for 2 PM tomorrow from the HRRR model

- 3rd to 5th images: Snow maps through 7 AM Wednesday from the GFS, Euro, and Model Blend, respectively

- 6th image: Projected 24-hour snowfall for Long Island for the next 15 days from every Euro ensemble member

- 7th image: Projected temperatures for Long Island for the next 15 days from the Euro ensembles

- 8th image: Brand-new GFS snow map