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Forecast Discussion for New York City/Upton, NY

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948
FXUS61 KOKX 302200
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
500 PM EST Tue Dec 30 2025

.SYNOPSIS...
The area remains behind a cold front tonight with low pressure
remaining to the north bringing a long-lasting cold airmass. A cold
front moves through Wednesday night with low pressure developing
east of the area Thursday. High pressure builds in on Thursday.
A cold front moves through Friday night followed by high
pressure for the weekend. An area of low pressure may impact the
area early to mid next week.

&&

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
The Wind Advisory has been cancelled. Gusts will continue to
diminish into the overnight period but an occasional higher gust
remain possible. Aside from a remaining stray flurry or brief
light snow shower this evening, mostly dry conditions are
expected. Low temperatures tonight will be in the low to middle
20s.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/...
Key Message:

* A cold front and frontal wave will result in widespread light
  snow Wednesday night into early Thursday.

Another shortwave rounds the base of the trough over the area on
Wednesday which will force a cold front through late in the day
and into Wednesday night. This will bring the chance for snow
showers on Wednesday evening. The shortwave provides for the
deepening of a low pressure wave developing along the passing
cold front overnight Wednesday into Thursday morning. This will
provide for additional lift later on at night likely resulting
in a more widespread light snow. The low pressure deepens east
of the area as it pushes away. As a result, the eastern portions
of the area have a better chance at seeing perhaps briefly
moderate snowfall before the low pulls away by Thursday morning.
Overall, less than an inch is expected for the Lower Hudson
Valley, NJ, NYC metro and western portions of CT. 1-2 inches are
possible for eastern CT and for eastern Long Island.

High pressure builds in on Thursday behind the departing low.
This will result in dry conditions, though it may be a bit
breezy with gusts upwards of 30 mph.

Temperatures remain cold. Highs Wednesday will be in the low to
middle 30s with lows at night in the upper teens to middle 20s.
More cold air advection behind the departing cold front and low
pressure Thursday morning will push even colder air into the
area. Highs on Thursday will be in the middle to upper 20s for
most with coastal areas around 30. Frigid temperatures are
expected Thursday night with diminishing winds resulting in lows
in the teens everywhere. Some single digits are possible for
inland areas. Wind chills Thursday night will be in the single
digits and perhaps near 0 for portions of the Lower Hudson
Valley.

&&

.LONG TERM /FRIDAY THROUGH TUESDAY/...
Key Points

* An extended period of cold conditions is expected with
  temperatures remaining 5 to 10 degrees below normal through early
  next week. During this time, much of the interior will likely
  remain below freezing.

* While decent spread still remains with the latest guidance, the
  next chance of precipitation looks to be with a potential clipper
  system early to mid next week. This continues to look like mainly
  an all snow event, with some rain mixing in at the coast.

A cold front moves through Friday night, with high pressure building
in behind it, and brings in a cold and dry airmass. Not looking at
record cold, but several days in a row of 5-10 degrees below normal
for both highs and lows. At this time, the cold front is expected to
move through dry, with dry conditions lasting through the weekend.

Although guidance is not in total agreement on early to mid next
week, it continues to hint at a potential clipper system bringing
precipitation to the area. The system looks to move quick and does
not have significant moisture with it. The NBM QPF trend the last 48
hours has generally remained between 0.10 inches and 0.25 inches in
total. If this does end up being an all or mostly snow event, a
couple of inches of snow would be possible.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
VFR with a gusty W flow. Expect gusts mainly in the 28-35kt
range. Winds will diminish this evening eventually ending for a
brief period early Wednesday morning. Winds become more
southwesterly Wednesday morning and winds increase a bit and
become gusty once again, but not as strong as today. Expect
gusts to be closer to the 20-25kt range.

 ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

Can not rule out a few isolated gusts higher than forecast.

.OUTLOOK FOR 18Z WEDNESDAY THROUGH SUNDAY...

Wednesday afternoon: VFR. WSW winds G20kt.

Wednesday night: Chance of light snow after midnight with brief MVFR
or lower conditions. WSW winds G15-20kt.

Thursday: Becoming VFR early. NW winds G20kt.

Friday: VFR. W winds G15-20kt.

Saturday and Sunday: Mainly VFR.

Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90

&&

.MARINE...
The Gale Warning has been cancelled for the NY Harbor and the
western LI Sound, but remains in effect on all other waters
through 1 AM. There may be a brief lull in SCA conditions on
the ocean early Wednesday night but winds increase to SCA
conditions once again late Wednesday night through Thursday. The
non-ocean waters will likely see SCA gusts as well on Thursday.
SCA conditions become more marginal Thursday night.

Marginal Small Craft Advisory conditions are possible with a cold
frontal passage Friday night. Thereafter, seas and winds look to
stay below SCA criteria through the weekend.

&&

.HYDROLOGY...
No hydrologic concerns through next weekend.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Gale Warning until 1 AM EST Wednesday for ANZ331-332-340-345-
     350-353-355.
     Small Craft Advisory until 6 AM EST Wednesday for ANZ335-338.

&&

$$

SYNOPSIS...JT/MW
NEAR TERM...JT/MW
SHORT TERM...MW
LONG TERM...JT
AVIATION...BC
MARINE...JT/MW
HYDROLOGY...JT/MW

Previous Forecast Discussions may be found at
NWS New York City/Upton, NY (OKX) Office Forecast Discussions.
(Click 'Previous Version' there to view past versions successively.
Some may differ only in time posted.)

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