Area Forecast Discussion
Issued by NWS Albany, NY

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FXUS61 KALY 171812
AFDALY

AREA FORECAST DISCUSSION
National Weather Service Albany NY
212 PM EDT Wed Apr 17 2024

.SYNOPSIS...
A frontal system approaching from west will gradually
move eastward across the region through Thursday, providing cool and
unsettled conditions. After a brief break Thursday night, additional
showers are likely Friday associated with a cold front passage.
Cool, breezy and mainly dry weather is expected for the upcoming
weekend.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
.UPDATE...Made some minor adjustments to temperatures, winds and
sky this afternoon based on latest obs. Still looking at dry
conditions across most of the area through much of the
afternoon. Chances for showers will gradually increase from SW
to NE for areas south/west of Albany through 5 PM. Clouds will
continue to gradually increase as well. High temperatures should
reach the mid 50s to mid 60s before the clouds/showers move in
later.

.PREV DISCUSSION[0919]...No significant changes with this
update. Just some high level clouds moving in this morning, with
mostly sunny skies still in place. Temperatures have quickly
warmed into the 40s/50s.

Skies will start out mostly sunny today, with clouds then
increasing and thickening from southwest to northeast later this
morning through this afternoon, well ahead of an approaching
warm front. Showers will gradually expand northeast into the
eastern Catskills, mid Hudson Valley, Schoharie County and
western Mohawk Valley by mid to late afternoon, with some
showers possibly advancing as far north/east as the Capital
Region closer to, or just after sunset.

Despite the increasing cloud cover, temps should still reach the
lower/mid 60s in many valley areas, warmest within the Hudson
Valley from Albany northward, as well as portions of far
northern Herkimer/Hamilton Cos where some downsloping from a
southeast breeze enhances warming.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY NIGHT/...
Isentropic lift and mid level frontogenesis increase tonight
ahead of approaching warm/occluded front. Upper level confluent
flow will maintain high pressure and subsidence just north and
east of the region, and may erode approaching rain bands across
the far upper Hudson Valley into southern VT. Elsewhere, periods
of light to moderate rain are expected tonight into much of
Thursday. As a shallow wedge of slightly drier air advances
south and west during Thursday, enhanced wet bulb cooling may
allow temps to drop through the day in some areas, making for a
rather raw day as temps either hold, or even fall through the
40s.

Rain should become more intermittent later Thursday, and may
taper off to spotty drizzle later Thursday night as best forcing
decreases with shearing upper level system. Lows Thursday night
in the mid 30s to around 40.

The combination of an approaching cold front from the west, and
weak low pressure south of Long Island will keep mostly cloudy
skies Friday, with showers increasing in coverage once again
from west to east late in the day, with showers continuing into
Friday night as the front crosses the region. Friday high temps
should reach into the 50s for most valley areas and 45-50 across
higher terrain areas. Lows Friday night in the mid 30s to
lower/mid 40s, warmest in valley areas.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
An upper level trough will be moving across the Northeast on
Saturday.  Although moisture is fairly limited, enough forcing
thanks to the cyclonic flow in place could allow for a few light
rain showers, mainly for northern and western areas, on Saturday.
Otherwise, skies will be partly to mostly cloudy, with the most
cloud cover across northern areas (especially early in the day).
With the cold pool overhead, temps will be a little on the cool side
on Saturday, with 50s for most spots (40s across the high terrain).
Temps will be chilly on Saturday night with lows in the upper 20s to
upper 30s.

While it should be dry on Sunday, heights will only be slowly
rising.  Temps aloft will remain chilly, so cool daytime temps will
continue, with most spots still in the 50s.  With high pressure
building into the area, dry weather should continue with skies
clearing out, especially by the afternoon hours.

With high pressure in control, it will remain dry on Monday. Warming
temps aloft should allow for a warmer day, with highs back up into
the 60s for Monday afternoon with a mostly sunny sky.

Some clouds may return by Tuesday as the next system starts to
approach.  A few showers are possible by later in the day Tuesday
and into Tuesday night, especially western areas.  Temps will
continue to be seasonable.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
BKN-OVC clouds with ceilings between 5 and 8kft are spreading north
and east across the terminals this afternoon. We remain dry through
the next few hours before showers reach POU around 21 - 00 UTC. Even
with showers, ceilings should remain VFR as moisture and forcing is
primarily in the mid and upper levels. Showers spread north and west
through this evening, reaching PSF by 00 - 03 UTC and finally reach
ALB and GFL towards or shortly after Midnight. VFR conditions likely
prevail with these initial showers.

There could be a period from 06 - 10 UTC or so where MVFR ceilings
and visibility can occur mainly at PSF and POU thanks to southeast
flow ushering in increased low-level moisture. Cannot completely
rule out IFR ceilings reaching POU but only included SCT009 at this
time given low confidence. Showers remain intermittent and mainly
light overnight for all terminals given forcing and moisture mainly
in the mid-levels.

Shower coverage and intensity gradually trend downwards towards the
end of the TAF period with VFR conditions returning, should any MVFR
conditions occur late overnight into early Thursday.

Light and variable winds tonight will become east-southeasterly
tonight and increase in intensity by or shortly after Midnight,
especially at PSF and POU with sustained winds reaching 5-15kts and
gusts up to 25kts.

Outlook...

Thursday Night: No Operational Impact. NO SIG WX.
Friday: Moderate Operational Impact. Chance of SHRA.
Friday Night: Moderate Operational Impact. Chance of SHRA.
Saturday: Low Operational Impact. Breezy. NO SIG WX.
Saturday Night: Low Operational Impact. Breezy. NO SIG WX.
Sunday: Low Operational Impact. Breezy. NO SIG WX.

&&

.ALY WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
MA...None.
VT...None.

&&

$$

SYNOPSIS...KL/Wasula
NEAR TERM...KL/JPV
SHORT TERM...KL
LONG TERM...Frugis
AVIATION...Speciale


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