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Forecast Discussion for New York City/Upton, NY
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535
FXUS61 KOKX 110851
AFDOKX
Area Forecast Discussion
National Weather Service New York NY
351 AM EST Thu Dec 11 2025
.SYNOPSIS...
Low pressure stalls to the north ushering in weak troughs from time
to time through Friday. Low pressure develop to the south Saturday
night. The low will then ride along a strong front Saturday night
into Sunday with the low pushing offshore with the cold front.
Strong high pressure then builds for early next week. A warm
front will attempt to approach towards late Wednesday and
Wednesday night.
&&
.NEAR TERM /THROUGH TONIGHT/...
Key Points:
* Gusty winds today, with some gusts getting close to wind
advisory criteria.
* Sharply colder today into tonight.
Through the early morning a cold front pushes through ushering in
cold air with an increasing WNW flow. There will more clouds for NW
sections and more in the way of partly cloudy to mostly clear skies
closer to the coast early this morning. Temperatures will be below
freezing inland and right around freezing at the coast. The wind
should be up enough to preclude widespread black ice, but a few
patches here and there of black ice are possible early this morning.
A strong and gusty WNW flow prevails throughout today and tonight.
For today BUKFIT forecast soundings actually hint at the region
getting very close to wind advisory criteria. Current thinking has
gusts getting to 40 mph, with occasional gusts as high as 45 mph. A
50 mph gust or two cannot be ruled out however. Chose to hold off a
wind advisory as prevailing gusts should fall just short of criteria
but will have to monitor with an upgrade to wind advisory not ruled
out with strong mixing and cold advection. For tonight gusty
conditions, with some subsiding of the wind taking place gradually
later in the evening and into the overnight. It will be unseasonably
cold with 850 mb temps getting down to -12, -13C. Lows will range
from the upper teens well inland, to mainly lower and middle 20s in
most places closer to the coast.
&&
.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
Key Points:
* Cold Friday into Friday night, followed by temperature
moderation into Saturday.
* Light snow possible late Saturday night as cold air arrives.
A gusty W flow continues to begin Friday, but not quite as
strong. With the core of the cold air mass beginning to slide
further east look for temperatures to get just above freezing in
most places by later in the afternoon, with wind chills mainly
in the 20s during the afternoon. With the winds going light
Friday night it will be cold with a good degree of radiational
cooling possible, but will depend on the amount of cloud cover
as a weak shortwave attempt to draw closer from the west. Lows
will be in the teens and 20s.
During Saturday the winds become more WSW which helps temperatures
approach 40 in the afternoon closer to the coast, with middle and
upper 30s elsewhere. Clouds will work in with a shearing out
shortwave during the day with the chance of a few flurries,
otherwise partly to mostly cloudy skies. A more potent shortwave
rounding the base of the eastern trough approaches Saturday night.
Skies will be cloudy with the chance of snow increasing later at
night into early Sunday morning, with the relatively higher chance
of mainly snow for the eastern half of the area. Any snow could
begin briefly as a wintry mix along the immediate coast, but should
be mainly snow as much colder air works in early Sunday morning.
&&
.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
Key Points:
* Weak low pressure in association with an Arctic boundary and
upper level disturbance could bring light snow, or a period of
snow for the eastern half of the forecast area Sunday morning.
* A shot of unseasonably cold air will follow for later Sunday
through Monday night, with temps up to 10 to 15 degrees below
normal. Temperatures should start to moderate late Tuesday into
Tuesday night but will remain below normal.
Low pressure passes well north of the area into Saturday night and
Sunday morning. At the same time, another fast moving vorticity max
rounds the base of the upper level trough over the Ohio and
Tennessee River Valleys and moves toward the forecast area.
Additionally, and arctic front moves through into Sunday.
Cyclogenesis is also likely along the front on Sunday well SE of New
England after it passes through, likely too late to have significant
snow impacts. However, a light snowfall is looking more likely, with
the possibility of a light accumulation of an inch or two. The best
chance of this looks to be for the more eastern portions of the
area. There remain differences among global NWP and thus it is too
far out to discuss snow or accumulations in greater detail. At this
time the upper trough appears progressive enough that drying behind
the front should be fairly quick and would preclude a more impactful
or prolonged snowfall.
After the passage of the cold front, colder conditions move in
Sunday afternoon through Mon night. Single digit to near zero wind
chills are looking likely for Monday morning, and wind chills may
not get out of the teens during the day Monday. The high should
build over the area on Tuesday and remain in control through
Wednesday, keeping the area dry through then. A warm front will
attempt to approach Wednesday night into Thursday and will bring the
chance of a few rain showers.
Temps will run 10 to 15 degrees below normal on Monday into Monday
night. A slight moderation in high temps (lower to middle 30s) is
expected for Tuesday, with less wind chill impact as winds lighten.
Temperatures return closer to normal by Wednesday, and may actually
inch above normal by Thursday.
&&
.AVIATION /08Z THURSDAY THROUGH MONDAY/...
A cold front will pass through early this mrng. High pressure
will then slowly build from the west today as low pressure over
the Canadian Maritimes intensifies.
Cold front will continue tracking thru the area this mrng,
passing offshore by 12Z. Winds ramp up quickly behind the
frontal passage, so the lull in gusts this mrng will end from NW
to SE.
Pockets of MVFR cigs this mrng are expected to sct out quickly
with the front, so they have not been included in the 9Z TAF
amendments. Otherwise, BKN VFR cigs expected this afternoon. A
brief snow shower may be possible late, but timing/location are
both too uncertain to mention yet.
WNW flow developing thru 12Z with gusts 30-35 kt. Winds
diminish slightly after 22Z-23Z, with gusts still between 25-30
kt.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Stronger WNW winds with gusts over 30 kt may arrive as early as
10Z.
A brief gust to 40 kt is possible today.
.OUTLOOK FOR 06Z FRIDAY THROUGH MONDAY...
Late tonight: VFR. WNW winds G20kt.
Friday: Mainly VFR. Isolated MVFR possible in any rain or snow
showers at night. W winds G20kt.
Saturday: Brief MVFR possible east early, otherwise VFR. W winds
G15-20 kt.
Sunday: MVFR or lower in any snow. NW winds G20-25kt.
Monday: VFR. NW winds G20-25kt.
Detailed information, including hourly TAF wind component
forecasts, can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
Gale conditions develop across the waters today on W to WNW winds in
the wake of a cold front. Gales should last through this evening for
all the waters, with more marginal gales late tonight for the
western waters. Gales should continue for the eastern most waters
through the entire night. As the winds decrease look for gale
conditions to go to small craft conditions for the majority of the
waters through the first half of the day Friday. Marginal small
craft conditions should linger across the eastern ocean through
Friday afternoon. Conditions continue to settle down for Friday
night into Saturday morning. Ocean seas increase some Saturday night
but should remain just below small craft criteria.
Behind another cold front winds and seas ramp up quickly on Sunday
with small craft conditions by the late morning or afternoon. A
period of gales is then possible Sunday night into Monday morning.
Gale conditions should subside to small craft conditions during the
day Monday with marginal small craft conditions likely lingering
through Monday night.
&&
.HYDROLOGY...
There are no hydrologic impacts expected through the entire forecast
period.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 6 AM EST early this morning for
ANZ331-332-335-338-340-345-350-353-355.
Gale Warning until 6 AM EST Friday for ANZ331-332-340-345-350-
353.
Gale Warning until 4 AM EST Friday for ANZ335-338-355.
&&
$$
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