623
FXUS61 KOKX 281444
AFDOKX
Area Forecast Discussion
National Weather Service New York NY
1044 AM EDT Fri Mar 28 2025
.SYNOPSIS...
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High pressure slides offshore today, with a warm front
approaching for tonight. The warm front is expected to be north
of the region Saturday and then shift back south for Saturday
night into Sunday. The front will lift back north on Monday,
followed by a cold frontal passage Monday night. High pressure
will then build in its wake on Tuesday and pass east on
Wednesday. A frontal system will approach Wednesday night into
Thursday.-- End Changed Discussion --
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
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Shearing shortwave and weak cold front slides east this morning,
with weak high pressure quickly nosing in for this afternoon.
Westerly flow give this AM, quickly gives way top waa return
flow this afternoon.
Dry conditions expected, but morning sun will give way to
increasing mid deck this afternoon/evening with approaching vort
energy ahead of shearing southern shortwave.
Temps will run 5 to 10 degrees warmer than yesterday with max
temps in the lower to mid 60s for much of the region, except for
upper 50s for south coastal areas with seabreeze development.-- End Changed Discussion --
&&
.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY NIGHT/...
Main feature tonight will be the northward movement of the front
that was in the area earlier. The front will be making its way
southwest to northeast across the local region as a warm front.
The warm air advection aloft is forecast to lead to a few rain
showers across the region tonight. Some patchy fog will be
possible as well.
Non-diurnal trend to temperatures tonight. Lows likely set
early with slowly rising temperatures overnight. Used a
combination of NBM/NBM 50th percentile for lows forecast for
late tonight into early Saturday morning.
The region gets in the warm sector Saturday with warm front
north of the region. SE Connecticut will not be too far away
from the front. Mainly dry conditions are expected since the
front will not be within the region. Increased low level SW flow
and ridging aloft will allow for a much warmer airmass. This
will result in temperature rising well above seasonal normals.
Models show 850mb temperatures Saturday afternoon to be about 10
degrees C warmer than 24 hours prior. These higher 850 mb
temperatures stay through the weekend, helping establish a low
level inversion.
MAV guidance has trended warmer for temperatures Saturday
compared to its previous run for western locations away from
maritime influence. Expect to see a large temperature gradient
in temperatures Saturday due to maritime influence, lowest for
Eastern Long Island and SE Connecticut, closer to 55 to 60, to
highest for Northeast NJ, lower 80s. Lower 70s to lower 80s
covers the range of high temperature for much of the region
Saturday.
The warm front does not move too much over the course of the
weekend. The warm front is forecast to work its way farther
south Saturday night into Sunday, allowing for more easterly
flow to the north of the boundary. This will lead to much cooler
temperatures for Sunday especially for the more northeastern
locations of the forecast area. The area high temperatures
Sunday fit mostly in the 50 to 60 degree range. The chances for
rain showers increase for the latter half of this weekend,
especially Sunday night. Boundary layer moisture increases over
the course of the weekend with patchy fog also expected Saturday
night into early Sunday morning as well as Sunday night into
early Monday morning.
Locations farthest north within the region will have relatively
higher chances of rain showers compared to locations farther south.
This will mean a difference in temperatures as well for this
weekend, comparing SE Connecticut and Eastern Long Island to the
Lower Hudson Valley and NE New Jersey.
&&
.LONG TERM /MONDAY THROUGH THURSDAY/...
The period starts with upper ridging to the east and an approaching
upper trough to the west. At the sfc, a warm front will lift to the
north early Mon, followed by a cold front Mon night. Mon should be
another mild day though not quite as warm as Sunday as flow will be
southerly off the ocean, with high temps in the lower 70s west of
the Hudson and in the 60s from NYC east. Showers will be likely
mainly Mon afternoon/evening via combo of the approaching cold front
and Atlantic moisture streaming northward in its advance via a low
level subtropical connection.
The front should pass east late Mon night, with precip coming to an
end, then skies becoming mostly sunny on Tue as the upper trough
axis passes east. Temps return closer to normal on Tue with highs in
the 50s, then cool off for Wed with highs only 45-50.
The next approaching frontal system arrives Wed night into Thu.
Precip type at the onset inland Wed night is a little uncertain, as
temps inland fall to the mid 30s and GFS hangs onto some colder air
aloft that might lead to a rain/snow mix, while ECMWF is warmer and
points more toward all rain. Rain expected for daytime Thu with
temps warming to the upper 50s inland and lower 60s from NYC
north/west as the area gets warm sectored.
&&
.AVIATION /14Z FRIDAY THROUGH TUESDAY/...
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A weak front will move into the area and stall nearby, then move
back north as a warm front late tonight into Saturday.
VFR. Winds have veered for the time being to the WNW around 10 kt
for a few hours, with occasional gusts possible at a few terminals
before resuming a SW-WSW direction this afternoon. Winds become S 5-
10 kt the NYC metro/coastal tonight and light/variable at some of
the outlying terminals as the weak front draws near.
Chance for MVFR cigs late this evening appear to be decreasing at
the NYC metros with any showers associated with the warm front move
across.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
No unscheduled AMD expected.
.OUTLOOK FOR 12Z SATURDAY THROUGH TUESDAY...
Saturday: VFR. Showers with MVFR cond possible in the afternoon,
especially at KBDR/KGON. SW winds G20-25kt in the morning and G25-
30kt in the afternoon.
Saturday night and Sunday: MVFR cigs east of the NYC metros, with
localized IFR possible there late night into the early morning. E-SE
winds G15-20kt daytime Sunday.
Sunday night: Chance of showers with MVFR cond possible.
Monday: MVFR or lower with showers and slight chance of thunder. S-
SW winds G20-25kt, becoming NW at night.
Tuesday: VFR. N-NW wind G20-25kt daytime.
Detailed information, including hourly TAF wind component
forecasts, can be found at: https:/www.weather.gov/zny/n90-- End Changed Discussion --
&&
.MARINE...
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Morning SCA conditions, mainly across eastern ocean waters,
gives way to sub-SCA conditions this afternoon through tonight
on all waters as high pressure moves through and then a warm
front.
SW SCA gusts likely for nearshore waters late Sat AM into
afternoon. Gusts will likely remain below SCA for the open
ocean and LIS waters with a stronger inversion, but SCA seas
likely on the ocean in 15-20kt SW flow.
A strong backdoor cold front moves from e to w late Sat aft/eve
which would bring a quick wind shift and potential for a brief
burst of SCA easterly winds in its wake, subsiding below SCA
later Sat Night into Sunday. The elevated ocean seas with SCA
levels will probably continue through the rest of the weekend,
especially for eastern ocean zones.
An extended period of SCA cond likely on the ocean into Tue night
as seas remain elevated, first via long fetch S flow up to 20 kt
on Mon, then in NW flow gusting to 25 kt Mon night into Tue AM
after a cold frontal passage followed by lingering swell. The non
ocean waters may also see minimal SCA cond late Mon night in post-
frontal NW flow but this is less certain.-- End Changed Discussion --
&&
.HYDROLOGY...
Around a tenth of an inch of rain or less with rain showers
tonight into early Saturday.
Less than a quarter of an inch of rain expected for showers for
the weekend through Sunday, mainly extreme northern areas.
Rain with the frontal system from late Sunday night into Mon night
should average around or just over 1/2 inch. There is potential for
QPF of 3/4 to 1 inch with locally higher amts Wed night into Thu but
this appears less certain.
No hydrologic impacts expected through the middle of next week.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 10 AM EDT this morning for ANZ331-
332-340-345-355.
Small Craft Advisory until noon EDT today for ANZ350-353.
&&
$$
SYNOPSIS...BG/JM
NEAR TERM...JM/NV
SHORT TERM...JM
LONG TERM...BG
AVIATION...BG/JE
MARINE...BG/JM/NV
HYDROLOGY...BG/JM