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Forecast Discussion for New York City/Upton, NY

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798
FXUS61 KOKX 171859
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
259 PM EDT Tue Mar 17 2026

.WHAT HAS CHANGED...
No meaningful changes with this forecast package.

&&

.KEY MESSAGES...
1) Cold with below average temperatures through Wednesday night.

2) No major storm systems through the forecast period, with just
a few minor disturbances late in the week and this weekend.

&&

.DISCUSSION...

.KEY MESSAGE 1...
A strong late season cP air mass will be firmly entrenched
resulting in below average temperatures in the short term.
Thicknesses in the mid 510s and 5 kft temperatures around -14C
tonight will lead to an unseasonably cold night tonight and for
the day on Wednesday. Expect widespread 20s for lows tonight and
perhaps a few upper teens well north and northwest. Before the
winds shut down late tonight the wind will make it fell a good
10 degrees colder at times with wind chills mainly down into the
teens for the late night and early Wed AM. Despite the higher
March sun angle, temperatures will struggle to reach 40 for a
high on Wednesday on a lighter NW flow. After another
unseasonably cold night for Wednesday night, although with light
winds, temperatures don`t recover much until later in the
afternoon on Thursday where western portions of the area get
close to 50. This will be followed by warmer temps of 5 degrees
or so into Friday when more widespread 50s are likely,
especially away from the coastline.

.KEY MESSAGE 2...
Some weak disturbances embedded in the WNW flow regime will
progress through late Thu night into Fri AM, Fri night into
Sat AM, and a third system being a cold front late Sun into Sun
night. No hazardous weather or weather related impacts expected
with these disturbances.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
High pressure builds in through the TAF period.

VFR. Isolated flurries are possible late this afternoon into the
evening. A very brief drop in vsby can not be ruled out.

Gusts remain around to 25-30kt through this afternoon.
Winds/gusts continue to diminish this evening with winds veering
more WNW. Winds less than 10kt by the Wednesday morning push and
may become VRB for several hours as high pressure moves
overhead.

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

Isolated flurries are possible late this afternoon into the
evening. A very brief drop in vsby can not be ruled out.

.OUTLOOK FOR 18Z WEDNESDAY THROUGH SUNDAY...

Wednesday-Thursday: VFR.

Friday-Friday night: VFR during the day, with possible MVFR or
lower in SHRA at night.

Saturday and Sunday: MVFR or lower in SHRA possible.

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

&&

.MARINE...
SCA conditions gradually subside tonight across the non-ocean
waters, but should continue on the ocean into daytime Wed, and E
of Fire Island Inlet into Wed night.

Sub advisory conditions then prevail with high pressure
essentially remaining nearby Thu through Friday with most
ocean seas hovering around 4 ft much of the time.

A series of weak disturbances push through early Saturday and
once again late Sunday into Sunday night. Hazardous ocean seas
may be possible E of Fire Island Inlet from Sat afternoon into
Sunday night.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until midnight EDT tonight for ANZ331-332-
     335-338-340-345.
     Small Craft Advisory until 3 PM EDT Wednesday for ANZ350-353-
     355.

&&

$$

DISCUSSION...JE/BG
AVIATION...JT
MARINE...JE/BG

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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