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Forecast Discussion for New York City/Upton, NY
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837
FXUS61 KOKX 092043
AFDOKX
Area Forecast Discussion
National Weather Service New York NY
343 PM EST Mon Feb 9 2026
.WHAT HAS CHANGED...
No significant changes with this forecast package.
&&
.KEY MESSAGES...
1) The cold eases as temperatures moderate in the near term.
2) A fast moving frontal system will bring some very light and
spotty precipitation late Tuesday afternoon into a portion of
Tuesday night. Some patchy light freezing rain and freezing drizzle,
and sleet may mix in with light snow.
3) There is a chance for rain and/or snow in the Sun-Mon period,
although there is a high amount of uncertainty.
&&
.DISCUSSION...
.KEY MESSAGE 1...
The core of the arctic air is exiting the region. With a snow cover
in place ans lighter winds, actual air temperatures get cold tonight
with clear skies and lighter winds. However, the ultra harsh wind
chills are now a thing of the past as high pressure settles over the
region resulting in light to calm winds later tonight. With better
radiational cooling conditions some single digit temperatures should
develop in the more non-urban and interior sheltered environments
during tonight and early Tue AM. Otherwise, expected widespread
teens for minimum temperatures, to around 20 for a portion of the
NYC metro. As the high gets to the east a weak return flow begins
during the day Tuesday. A light southerly flow will help
temperatures get to and above the freezing mark during the
afternoon.
.KEY MESSAGE 2...
A fast moving frontal system with a weak area of low pressure
passing through just north of the area will bring some patchy light
mixed precipitation to the region, and mainly some spotty light snow
across far northern portions of the area Tuesday afternoon into a
portion of Tuesday night. Any accumulation will be very light and
generally under an inch, and probably limited to a light coating in
most locations. Any lift with this system will be weak and should
limit precip amounts to mainly under a tenth of an inch of liquid.
However, with a warm nose working into the mid levels it is starting
to appear more likely that some places will see some very light
freezing rain and drizzle. This will have to be monitored with the
next forecast update. Have held off on any winter weather mixed
precip headlines for the time being, but this will have to be
revisited if current trends to light freezing rain / drizzle
continue.
.KEY MESSAGE 3...
A deep Pacific trof is expected to spawn low pres E of the Rockies
by Sat, then track it across the Southeast and offshore by Mon,
potentially passing close enough to impact the local area. The
modeling has been consistent with the general idea of the storm, but
there remains a high amount of uncertainty with the details.
Most of the data suggests a W to E, or SW to NE type track, not
making a big hook up the coast. The arctic air thus far looks
limited, so this could be a sys with a lot of mixed pcpn and rain,
with a decent freezing rain threat inland if the low tracks to the S
and the flow remains backed at the sfc. Too far out to have
confidence in the details, and with the AIGFS consistently S of the
area, it could end up being just a glancing blow or nothing at all.
Still, with the multi-model support, the NBM is producing a 60-70
pop for the event. Stuck with the NBM for the fcst, but of all the
fields the temps in particular may be much too high for the event if
the flow remains backed and CAD occurs.
&&
.AVIATION /20Z MONDAY THROUGH SATURDAY/...
High pressure builds over the region into tonight, then shifts
offshore Tuesday as a frontal system approaches.
VFR.
NW winds back more WNW into late day. Speeds 10-15 kt with a
few lingering 20 kt gusts east of NYC terminals, before
lightening further by 00Z. Flow goes light and variable
overnight, persisting through Tuesday morning, then becoming
southerly in the afternoon. Brief period of light snow possible
at KSWF mid to late Tuesday afternoon, with an outside chance
of flurries or snow showers for coastal terminals.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
No unscheduled amendments expected.
A brief snow shower possible after 18Z Tue, confidence in
occurrence too low to include in TAF at this time.
.OUTLOOK FOR 18Z TUESDAY THROUGH SATURDAY...
Tuesday PM: Mainly VFR most of the day, MVFR possible with
chance of light snow and wintry mix later in the afternoon and
for the evening.
Wednesday: VFR. NW wind gusts 20-25kt.
Thursday through Saturday: VFR. NW winds.
Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
The winds diminish into tonight with sub advisory conditions
returning to all ocean waters, with sub advisory conditions
continuing elsewhere. Ocean seas return to 2 to 3 foot levels on
Tuesday as high pressure begins to move further east as the winds
shift to the south. The winds increase Wednesday afternoon into
Wednesday night allowing for small craft conditions to return for
most of the waters.
Diminishing winds on Thu should allow all waters to fall blw sca
lvls by the end of the day. Winds and seas then look to remain blw
sca lvls Fri and Sat with a broad area of low pres building in.
Developing low pres will result in increasing winds and building
seas on Sun.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 6 PM EST this evening for ANZ350-
353.
&&
$$
DISCUSSION...JMC/JE
AVIATION...DR
MARINE...JMC/JE
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