Select NOAA-NWS Forecast Office Text Products

(Product availability varies with seasons, forecast office, and weather.)

Forecast Discussion for New York City/Upton, NY

To Select Another NWS Office Click on Map or Choose from List

County Warning Area MAP
Select Forecast Office:   Select Product:  
592
FXUS61 KOKX 311221
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
721 AM EST Wed Dec 31 2025

.SYNOPSIS...
The area remains between strong low pressure over eastern Canada
and high pressure west of the Appalachians. As low pressure
passes to the north tonight, a trailing cold front will
approach. The front will then move through on New Year`s Day
while the low intensifies east of New England. Another cold
front will approach but remain to the north Friday night into
Saturday as low pressure passes well south. High pressure will
build into the area Sunday into Monday. A warm front will
approach Monday night as the high moves to the east.

&&

.NEAR TERM /THROUGH TONIGHT/...
W flow will back more to the WSW today and still gust to 20-25
mph. Meanwhile weakly cyclonic flow and passage of a mid level
shortwave trough will promote clouds through much of the day,
with some clearing late mainly E of NYC. After AM lows in the
20s, temps will rise to 30-35 this afternoon, which is still
well below normal.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
Key Points:

* An approaching cold front will result in light snow tonight
  into early New Year`s Day.

* Brisk and colder conditions expected for New Year`s Day into
  Friday night as low pressure intensifies east of New England.

As a closed low moves from Ontario into upstate NY and QUebec
tonight, sfc low pressure will develop over upstate NY tonight
and move into New England after midnight. Low level WAA ahead
of a trailing cold front approaching the area will generate some
light snow mainly from late evening into the overnight and early
daylight hours, especially over S CT and ern Long Island,
where at least an inch of accumulation is likely, possibly up to
2 inches across SE CT and the forks of Long Island. Given SW
flow and WAA ahead of the cold front can`t rule out a brief mix
with rain across the forks of Long Island and far SE CT, but
attm think precip intensity may be enough to keep wet bulb temps
aob freezing and p-type mostly if not all snow.

Farther west, accumulations look to be on the lighter side,
less than an inch.

Low temps tonight will range from the upper teens well NW of NYC
to the 20s elsewhere.

On New Year`s Day, as the low deepens E of New England, the cold
front should pass through early, with winds shifting NW and
increasing, with gusts 30-35 mph in the afternoon in the NYC
metro area and along the coast. High temps in the NYC metro area
and along the coast will be in the lower 30s, and 25-30 inland.
Continued CAA will lead to a cold/brisk night Thu night, with
lows from the teens to lower 20s, and wind chills bottoming out
in the single digits. High temps on Fri look similar to those
of New Year`s Day.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
Key Points:

* Cold continues into Monday, with much of the interior
  remaining below freezing.

* Some moderation is expected for Tuesday after a warm frontal
  passage.

Cold front should remain to the north Fri night into Sat while
low pressure passes well south. This will keep us dry and cold
into early next week, with high pressure finally building in
Sunday into Monday. As the high slides E Mon night, a SW return
flow should develop and a warm front approach from the SW,
bringing some precip, mostly as light snow, but with perhaps a
rain/snow mix across ern Long Island and SE CT. Little
accumulation expected at any rate with QPF less than 1/10 inch.
Temps finally moderate closer to normal on Tue after
warm fropa.

&&

.AVIATION /12Z WEDNESDAY THROUGH SUNDAY/...
The terminals remain between strong low pressure over eastern
Canada and high pressure west of the Appalachians. A cold front
move through late tonight.

Gusty W flow slowly diminishing through early this morning, and
may be more occasional at times before briefly ending for a few
terminals after 21Z (KEWR, KJFK, KTEB). Gusts pick back up
again around 06-09Z Thu. Wind direction will be WSW to SW
through tonight.

Mainly VFR through the TAF period. There is a chance for light
snow and MVFR/IFR this evening (generally between 02-08Z Thu),
which may become more widespread overnight, especially north and
east of the NYC metro terminals. There may be some lingering
snow showers from 08-12Z Thu, but chances were too low to
include in TAFs (except KGON).


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

Gusts may be more occasional today, with a lull expected for
some terminals after 21Z and start back up again late tonight.

End time of gusts this afternoon may be off by 1-2 hours.

Amendments likely for light snow potential and flight categories
tonight.

.OUTLOOK FOR 12Z THURSDAY THROUGH SUNDAY...

Thursday: Chance of light snow and MVFR/IFR at KGON, otherwise
VFR. NW winds G20kt.

Friday: VFR. W winds G15-20kt.

Saturday and Sunday: Mainly VFR.

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

&&

.MARINE...
Gale warning replaced with SCA out east. SCA now in effect for
the ocean waters through tonight, and for the remaining waters
into the overnight tonight. With some near shore locations
still gusting up to 25 kt today it is likely the SCA may need to
be extended into at least part of the daytime hours for NY
Harbor and the Long Island South Shore Bays. Seas 5-10 ft on the
ocean should diminish to 5-8 ft by daybreak and 3-5 ft by
afternoon.

SCA cond continues on the ocean tonight as SW flow gusts to
25-30 kt and seas build to 5-8 ft.

Gale watch issued for the ocean waters for daytime Thu as NW
winds increase after cold fropa and as low pressure intensifies
E of New England, with gusts up to 35 kt possible. SCA cond
likely on all other waters with gusts 25-30 kt.

SCA cond expected thereafter for the ocean waters into Fri
evening, and for the ern Sound/bays into Thu night or early Fri
morning.

&&

.HYDROLOGY...
No hydrologic concerns through next weekend.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until noon EST today for ANZ338-345.
     Small Craft Advisory until 6 AM EST Thursday for ANZ350-353-
     355.
     Gale Watch from Thursday morning through Thursday afternoon
     for ANZ350-353-355.

&&

$$

SYNOPSIS...BG
NEAR TERM...BG
SHORT TERM...BG
LONG TERM...BG
AVIATION...JP
MARINE...BG
HYDROLOGY...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.)

San Juan, PRHonolulu, HI Lake Charles, LA Pueblo, CO Corpus Christi, TX St. Louis, MO Reno, NV Raleigh, NC  Newport/Morehead City, NC Dodge City, KS Houston/Galveston, TX San Joaquin Valley/Hanford, CA Louisville, KY Fort Worth, TX Pittsburgh, PA Austin/San Antonio, TX Sacramento, CA Jackson, MS Phoenix, AZ Northern Indiana, IN Flagstaff, AZ Tallahassee, FL Springfield, MO Riverton, WY Blacksburg, VA Sioux Falls, SD El Paso Area, NM Columbia, SC Wilmington, NC Greenville-Spartanburg, SC Eureka, CA Midland/Odessa, TX Tucson, AZ Goodland, KS Huntsville, AL Amarillo, TX Norman, OK Lubbock, TX Marquette, MI Little Rock, AR Pendleton, OR Missoula, MT Binghamton, NY Boston, MA Green Bay, WI Billings, MT Baltimore/Washington San Diego, CA Tampa Bay, FL Morristown, TN Twin Cities, MN Brownsville, TX Portland, OR Des Moines, IA Memphis, TN Pocatello, ID San Angelo, TX Jacksonville, FL Aberdeen, SD Quad Cities, IA/IL Charleston, SC New Orleans/Baton Rouge, LA Peachtree City, GA Shreveport, LA Grand Rapids, MI Medford, OR Albany, NY Wichita, KS Gray/Portland, ME Spokane, WA Boise, ID Denver/Boulder, CO Great Falls, MT Caribou, ME Key West, FL Miami-South Florida, FL New York City/Upton, NY Melbourne, FL Hastings, NE Paducah, KY Glasgow, MT Bismarck, ND Charleston WV Omaha/Valley, NE Buffalo, NY Jackson, KY Kansas City/Pleasant Hill, MO Gaylord, MI Cheyenne, WY Grand Forks, ND Detroit/Pontiac, MI Central Illinois, IL Burlington, VT Salt Lake City, UT Topeka, KS Nashville, TN Milwaukee/Sullivan, WI Albuquerque, NM Las Vegas, NV Wakefield, VA La Crosse, WI Birmingham, AL Los Angeles/Oxnard, CA Chicago, IL Seattle, WA Rapid City, SD Indianapolis, IN Philadelphia/Mount Holly, PA Mobile/Pensacola State College, PA Cleveland, OH Elko, NV Wilmington, OH Grand Junction, CO North Platte, NE Tulsa, OK San Francisco/Monterey Bay Area, CA Duluth, MN Anchorage, AK Fairbanks, AK Juneau, AK Tiyan, GU

Products Courtesy of NOAA-NWS
NWS Information Parsing Script by Ken True at Saratoga Weather - WFO and Products Scripts by SE Lincoln Weather.
Mapping by Curly at Michiana Weather and by Tom at My Mishawaka Weather.