204
FXUS61 KOKX 230337
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
1037 PM EST Fri Nov 22 2024

.SYNOPSIS...
Low pressure sinks southeast of the region tonight, and then
gets absorbed into an offshore bombing low pressure tracking
into the Gulf of Maine on Saturday. This intense low slowly
lifts northeast through the Canadian Maritimes through the
weekend. High pressure builds in for the beginning of next week,
followed by a frontal system for the middle of the week. Low
pressure may develop near the area by next Friday.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Little to no additional snowfall north and west of NYC expected
with otherwise light rain lingering going into overnight.

Stacked and filling upper low will slide SE of the region tonight
and then absorb into a deepening offshore low.

Only plain rain expected for NYC/NJ metro and coastal plain through
tonight, more showery in nature across LI/CT as the low tracks
east. With a bit of elevated instability, an isolated tstm with
heavy downpours possible across LI/S CT thru overnight as
higher theta-e/ weakly unstable airmass gets advected in from
off the ocean.

Late tonight, the stacked/occluding low will move southeast of the
area, with precipitation tapering from w to e overnight. Far eastern
areas may still see some lingering showers Sat morning in cyclonic
flow around offshore low.

Otherwise, gusty S/SW winds eventually become light and
variable overnight as low pressure moves through, before
increasing from the NW towards daybreak Saturday.

Temps remain near seasonable levels, lower 30s across areas
well N&W of NYC, and upper 30s to lower 40s most elsewhere with
cloud cover and mixed low-levels.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/...
Vigorous shortwave pivoting around the stacking upper low and
over the Gulf Stream tonight will deepen a new closed upper low
over the Gulf of Maine, which slides into the Canadian
Maritimes, Saturday into Sunday. This will result in bombing
low pressure over the Gulf of Maine on Saturday, absorbing low
pressure sliding se of the local area, and drifting ne into the
Canadian maritimes Sat Night into Sun.

Cyclonic flow will keep cloud cover and scattered shower
activity across E LI/SE CT on Saturday, with partial clearing
across western portions of the area. Primary sensible weather
threat will be breezy conditions with sustained W/NW winds of
25 to 30 mph and gusts 35 to 45 mph. Isolated peak gusts to 50
mph possible Sat aft. With most foliage off trees, wind impacts
should be limited, with isolated tree damage and power outages
possible. Most susceptible may be higher elevations of Orange
County and western Passaic where snow load remains. Temps
slightly below seasonable for Saturday into the mid to upper 40s
interior, and lower 50s city/coast.

Pressure gradient remains tight Sat Night, with winds only
gradually subsiding to 15 to 25 mph with gusts to 35 mph
overnight. Temps near seasonable with mixed low-levels.

&&

.LONG TERM /SUNDAY THROUGH FRIDAY/...
An active pattern is suggested by the modeling thru next week.
For Sun, a deeply mixed airmass with strong subsidence should
produce windy conditions. The NBM may be a little to light on
the cloud cover based on the GFS time heights, but with the
strong subsidence did not adjust the numbers yet. Went with NBM
temps due to the expected mixing, but if the clouds hang in
mixing doesn`t look to be deep enough to yield NBM numbers.
Winds gusts around 35 mph expected attm with h85 winds 35-40kt.
The gradient relaxes and winds decrease Sun ngt with temps close
to the NBM.

Increasing clouds ahead of a warm front on Mon. No rain however
per the model consensus until Mon ngt when chances increase,
then continued chances on Tue ahead of the trailing cold front.
The best dynamics currently progged N of the cwa, so significant
rainfall is not fcst attm.

Fair and cooler on Wed behind the front. Dry wx is progged with
some wly wind gusts around 25 mph at times.

Temps in the 20s and 30s Thanksgiving mrng per the NBM which seemed
reasonable based on some increasing clouds ahead of another
potential sys.

The models keep the storm track S of the cwa Thanksgiving and
Fri, with chances of low pres development thru the period. This
would bring chances for rain at the coasts and rain or snow
interior. With a cold airmass to tap into, any low deep enough
to bring winds to the N could allow for some snow to the coasts.
Otherwise, progressive lows will keep the ely component in
place likely resulting in a bl too warm for snow there. There is
a high amount of uncertainty with this portion of the fcst 7-8
days out, but did go a little blw the NBM for high temps based
on the fairly high model consensus pops.

&&

.AVIATION /04Z SATURDAY THROUGH WEDNESDAY/...
Low pressure areas in the vicinity strengthen tonight into
Saturday. One low moves to the southeast of the region tonight,
while another low moves towards the Canadian Maritimes.

Light rain lingering into the overnight. Outside of perhaps a
few rain showers east of NYC terminals Saturday, mainly dry
conditions are expected otherwise.

Category forecast mainly MVFR to IFR tonight and then mostly MVFR to
VFR Saturday. By 18Z Saturday, only expecting terminals east of NYC
to have MVFR with otherwise VFR conditions. Winds will be variable
direction at or less than 5 kts this evening, before an increasing
northerly wind develops overnight near 10 kts. The winds become NW
to WNW Saturday and increase to near 15-20 kt with gusts near 30-35
kt. A few peak gusts to near 40 kt are possible Saturday afternoon.
Winds begin to decrease again Saturday evening.

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

Amendments likely to refine timing of wind switching to more
northerly direction.

Amendments likely to refine timing of categorical changes.

Some fluctuation between categories could occur tonight.

OUTLOOK FOR 00Z SUNDAY THROUGH TUESDAY...

Saturday night: VFR. WNW winds 15-20G25kt.

Sunday: VFR. WNW winds 15-20 kt with G25-30kt, diminishing at
night.

Monday...Mainly VFR. Increasing chances of rain Monday night,
eventually becoming likely for most terminals. MVFR or lower
possible Monday night.

Tuesday: Showers/MVFR likely in the day especially east of the
NYC metros, otherwise VFR. SW-W winds G20kt.

Wednesday: Mainly VFR. W winds G20kt.

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

&&

.MARINE...
SCA winds on all waters briefly falling below SCA criteria tonight
as low pressure moves through, before ramping up to SCA once
again Saturday morning as offshore low rapidly deepens.

Gale conditions expected to develop on the ocean later Saturday
morning and continue into Sun Am, with marginal gale conditions
likely for all nearshore waters during this time.

Winds will be close to gale through Sun, then winds decrease on
Mon with seas falling blw sca lvls on the ocean during the day.
A frontal sys could bring sca cond to the waters Tue and Wed,
especially the ocean. Low chc of sca cond on Thu, with the probs
highest on the ocean.

&&

.HYDROLOGY...
Additional QPF less than 1/4" through overnight. No hydrologic
impacts are expected through the middle of next week.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Gale Watch from 6 AM EST Saturday through Sunday morning for
     ANZ331-332-335-338-340-345.
     Small Craft Advisory until 6 AM EST Saturday for ANZ350-353-
     355.
     Gale Warning from 6 AM Saturday to 7 AM EST Sunday for ANZ350-
     353-355.

&&

$$

SYNOPSIS...JMC/NV
NEAR TERM...JMC/JM/NV
SHORT TERM...NV
LONG TERM...JMC
AVIATION...JM
MARINE...JMC/NV
HYDROLOGY...JMC/NV