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Forecast Discussion for New York City/Upton, NY

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580
FXUS61 KOKX 011849
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
249 PM EDT Wed Apr 1 2026

.WHAT HAS CHANGED...
The Small Craft Advisory has been expanded to all waters, and
extended in time on the ocean.

&&

.KEY MESSAGES...
1. Minimal tidal flooding impacts possible Thursday night.

2. Much cooler on Thursday.

3. Showers likely on Sunday with any impacts likely limited.

&&

.DISCUSSION...
.KEY MESSAGE 1...
Spring tides along with increasing ENE flow behind a cold frontal
passage will allow tides to rise to near minor flood stage across
the most vulnerable back bay locations. The high tide cycle impacted
is the Thu night cycle. There is still a decent spread in the
modeling at this time, so will hold off on statements for now in
case the spread tightens blw thresholds in even these most
vulnerable spots like Freeport. The guidance for Reynolds Channel
has a mean blw minor criteria attm.


.KEY MESSAGE 2...
A cold front will pass thru the area late this aftn into the eve,
passing south of the area tngt. A few shwrs and perhaps an isold
tstm will be possible invof the front. Any tstms are expected to be
weak attm with minimal instability of only a few hundred J/kg
of CAPE. Otherwise, an ENE flow kicks in behind the shallow
front, and temps are modeled to drop into the 40s with perhaps a
few upr 30s tngt. A shrtwv sparked by convection over the Ohio
Valley passes thru Thu mrng, providing chances for rain. The
clouds, llvl flow, and airmass change will keep high
temperatures 20-30 degrees colder than today.


.KEY MESSAGE 3...
Forecast trends remain for the timing of a strong cold front that is
expected to move through the region Sunday into Sunday night with
showers likely. With limited surface and elevated CAPE and little
instability thunderstorms are not included in the forecast. An
isolated thunderstorm can not be completely ruled out as a low level
jet will provide some lift along with the cold front, and some
guidance is indicating stronger convective elements late Sunday
morning into the afternoon. Regardless of thunder, brief heavy
downpours are possible with isolated minor urban/poor drainage
flooding, along with gusty winds with the stronger showers.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
A cold front passes through the region from this afternoon into
early this evening. The front then stalls south of the region
thereafter through the rest of the TAF period.

Category forecast starts with VFR then trends to mainly MVFR by
late this afternoon when showers are expected to become more
numerous in coverage. In addition, there is a chance of a
thunderstorm, but the probability is too low to include in TAFs.
Some showers remain but will be light tonight, and eventually
become more of a light rain or drizzle going into Thursday.

Then, for late tonight and into Thursday, MVFR is expected to
trend towards IFR. IFR is expected to remain thereafter for the
rest of the TAF period. IFR is mainly for ceilings.

Regarding the winds, they are initially S-SW near 10 kt with
gusts up to near 20 kt for this afternoon. Then, winds are
expected to shift and become more northerly behind the cold
front mid to late this afternoon into this evening. The
northerly winds eventually become more NE-ENE by late tonight
into early Thursday. Wind speeds pick up to near 15 kt late
tonight into early Thursday, and then stay in a general 10-15 kt
for the rest of the TAF period. Some gusts up to 20 kt can be
expected.


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

If radar blossoms with discrete heavier showers may have to
amend to add in brief TSRA for 1-2 hours before 01Z Thursday.

The timing from southerly to northerly winds may be off by 1-2
hours from TAF.


.OUTLOOK FOR 18Z THURSDAY THROUGH MONDAY...

Thursday: IFR. E/NE 10-15kt at the coast. -DZ.

Friday: Becoming VFR. SW G15-20kt.

Saturday: Mainly VFR. Chance for MVFR or lower Sat night.
Chance of showers. SE-S wind gusts 15-20 kt.

Sunday: MVFR or lower possible. Chance of showers. SW gusts to
near 20 kt during day. W-NW wind gusts near 20 kt at night.

Monday: VFR. W-NW wind gusts 15-20 kt.

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

&&

.MARINE...
Seas on the ocean are modeled to remain aoa 5 ft thru most of Thu
ngt, so the SCA was extended there. On the remaining waters,
increasing ENE winds behind a cold front this eve will be close to
SCA lvls. An advy has therefore been issued for this. Winds and
waves likely blw SCA lvls Fri, then SCA cond again possible Fri ngt
and Sat, especially on the ocean.

Saturday night SCA conditions will be developing on the ocean waters
as a southerly flow strengthens ahead of an approaching cold front.
By Sunday SCA conditions will be likely across all the forecast
waters. Gusts will be near gale force on the ocean waters for
several hours during Sunday, however, have low confidence that gusts
will be that high as a strong low level inversion will be in place
over the cooler waters. Post cold front, with a westerly flow,
conditions will be slowly improving west to east Sunday night
through Monday with the non ocean waters falling below advisory
levels during Sunday evening. Winds and seas will then remain below
advisory Monday night into Tuesday as high pressure builds toward
the waters.

&&

.CLIMATE...
Record High Temperatures:

April 1:
KEWR: 82/1978
KBDR: 71/1955
KNYC: 83/1917
KLGA: 80/1978
KJFK: 75/1978
KISP: 67/1999

April 4:
KEWR: 82/1950
KBDR: 71/2025
KNYC: 80/1892
KLGA: 76/2010
KJFK: 73/2010
KISP: 75/2010

Record High Minimum Temperatures:

April 1:
KEWR: 62/2016
KBDR: 53/2016
KNYC: 61/2016
KLGA: 56/2016
KJFK: 52/2016
KISP: 54/2016

April 4:
KEWR: 61/1981
KBDR: 53/2025
KNYC: 62/1892
KLGA: 57/2025
KJFK: 57/2025
KISP: 54/2025

April 5:
KEWR: 55/1981
KBDR: 49/1974
KNYC: 60/1892
KLGA: 53/2010
KJFK: 52/2010
KISP: 50/1981

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory from midnight tonight to 6 PM EDT
     Thursday for ANZ331-332-335-338-340-345.
     Small Craft Advisory until 6 AM EDT Friday for ANZ350-353-355.

&&

$$

DISCUSSION...JMC/MET
AVIATION...JM
MARINE...JMC/MET

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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