178
FXUS61 KALY 142359
AFDALY

AREA FORECAST DISCUSSION
National Weather Service Albany NY
759 PM EDT Sun Jul 14 2024

.SYNOPSIS...
A weak disturbance will move across the region
tonight with isolated showers and thunderstorms.  Humidity levels
will increase tonight through Wednesday with hot temperatures
continuing, along with increasing chances for showers and
thunderstorms. A cold front will cross the region Wednesday with
additional showers and thunderstorms, followed by cooler and much
less humid conditions by late week.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
.UPDATE as of 715 pm EDT...Scattered to broken mid and high
clouds continue across portions of eastern NY and western New
England late this afternoon. A weak disturbance in the fairly
zonal flow aloft is approaching from the Great Lakes Region and
western NY with isolated to scattered showers and a few rumbles
of thunder. This update included retooling sky cover and cutting
back slight and low chance PoPs based on the radar trends and
latest CAMS until closer to or shortly after midnight northwest
of the Capital Region. A mild night is expected with lows in the
60s to lower 70s as dewpoints and humidity levels creep up.

.PREV DISCUSSION [0340 pm EDT]...

Few if any clouds across the region and that should continue
through this evening. Weak band of scattered showers and storms
in western NY and the Great Lakes may hold together enough
through the night to reach eastern NY just before daybreak with
an isolated shower or thunderstorm. The mesoscale models are not
in much agreement on the coverage of showers and storms as
the relatively stable conditions in eastern NY will modify a
little overnight with slowly increasing low level moisture but
very weak upper dynamics and low level forcing.

So, increasing cloud cover through the night with an isolated
shower or thunderstorm. Lows in the 60s to lower 70s.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/...
**Heat Advisory issued for the Hudson Valley, including the
 Capital Region, the Mohawk Valley, Lake George Saratoga Region
 and northwestern Connecticut noon Monday through 8 PM
 Tuesday**

The timing and coverage of showers and storms Monday and Tuesday
is still a bit uncertain but there is some degree of consensus.
Once small upper impulse tracking through the Great Lakes Monday
will support a period of scattered showers and thunderstorms
Monday afternoon and evening. Low level moisture and humidity
will increase and sunshine outside of any showers and storms
will help temperatures reach the upper 80s to lower 90s, with
heat indices in the mid to upper 90s in the Hudson and Mohawk
Valley and NW CT.

The heat and humidity will support considerable instability,
CAPES at and above 1500 j/kg in many areas. Shear will not be
strong but deep shear around 30 to 40 Kt could support some
stronger storms with isolated damaging winds. Locally heavy
rain possible with ponding of water on roadways.

Convection will diminish through Monday evening and a mix of
convective debris clouds will stay over our region into Tuesday
morning. Mixed sunshine and clouds Tuesday morning and at least
part of the afternoon will help temperatures reach into the
upper 80s to lower 90s again with heat indices from the mid 90s
to around 100.

Another small upper impulse is expected to track along or
near the U.S./Canada border. This upper impulse will support
scattered showers and thunderstorms developing in the late
morning to early afternoon over western areas and coverage of
storms will increase through the afternoon as they track east.

Instability will be considerable once again, with CAPES at or
exceeding 1500 J/kg. However, deep shear may be a bit stronger
with 40 Kt or better, supporting a few organized areas of storms
and isolated to scattered damaging winds. Locally heavy rain
possible with ponding of water on roadways.

Coverage of showers and storms diminish Tuesday night but as a
cold front begins to approach and as the area of stronger
boundary layer winds expands in coverage, some isolated to
scattered showers and storms may persist through much of Tuesday
night. Some intervals of clouds and sun with isolated to
scattered showers and storms Wednesday morning will increase in
coverage Wednesday afternoon with the approach of stronger
upper energy and the associated cold front. A bit more coverage
of clouds Wednesday will limit highs to the mid 80s to around 90
and cooler in higher terrain.

Instability and shear could support some strong to severe
thunderstorms Wednesday afternoon and evening. Then weakened
showers and storms linger through Wednesday night as the cold
front tracks through.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
Weakened showers and storms decrease in coverage through
Wednesday night. Then, the boundary layer wind shift and leading
edge of boundary layer cold advection tracks through the region
through the day Thursday. So, there will be a mix of clouds and
sun and the low level forcing along the leading edge of the
cold advection and boundary layer wind shift could support an
isolated shower or thunderstorm. Highs Thursday in the low to
mid 80s with 70s higher terrain.

Cooling and drying Friday with highs in the lower to mid 80s and
cooler in higher terrain. Just a slight bit warmer Saturday with
highs in the mid 80s and upper 70s to around 80 higher terrain.
A little bit warmer Sunday as upper heights rise slowly and
weak warm advection occurs. Highs in the mid to upper 80s with
around 80 higher terrain.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
Through 00Z Tuesday...VFR conditions begin the TAF cycle for
KALB/KGFL/KPSF/KPOU with sct-bkn mid and high clouds. A weak
upper level disturbance will approach from the west allowing the
clouds to thicken and lower with bases 6-10 kft AGL from
KALB/KGFL north and west between 04Z-08Z/MON. A few showers may
get close to the terminals and a VCSH group was placed at
KALB/KGFL by 07Z-08Z/MON. Some patchy mist may form near KPOU
where calm winds and mainly clear skies may persist most of the
night. We kept KPOU above the MVFR vsby range for now.

Mid and high clouds will persist by 12Z/MON with VFR conditions
and cigs in the 10-15 kft AGL range. The skies will clear some
by the early afternoon. Another upper level disturbance will
approach for the mid to late pm with the threat for scattered
showers and thunderstorms. PROB30 groups were used between
19Z/MON and 00Z/TUE at the TAF sites with brief MVFR conditions
possible with any thunderstorms. Later TAF issuances may narrow
the time frame with PROB30s or TEMPO groups for the
showers/thunderstorms.

The winds will vary from southwest to northwest at 7 KT or less
early tonight, and then they will become light and variable in
direction to calm prior to midnight. The winds will increase
from the south to southwest in the late morning and continue
through the afternoon at 5-10 KT.

Outlook...

Monday Night: Moderate Operational Impact. Scattered SHRA...TSRA.
Tuesday: Moderate Operational Impact. Likely SHRA...TSRA.
Tuesday Night: Moderate Operational Impact. Scattered SHRA...TSRA.
Wednesday: Moderate Operational Impact. Likely SHRA...TSRA.
Wednesday Night: Moderate Operational Impact. Scattered SHRA...TSRA.
Thursday: Moderate Operational Impact. Slight Chance of SHRA...TSRA.
Thursday Night: No Operational Impact. NO SIG WX.
Friday: No Operational Impact. NO SIG WX.

&&

.ALY WATCHES/WARNINGS/ADVISORIES...
CT...Heat Advisory from noon Monday to 8 PM EDT Tuesday for CTZ001-
     013.
NY...Heat Advisory from noon Monday to 8 PM EDT Tuesday for
     NYZ038>041-043-049-050-052-053-059-060-064>066-083-084.
MA...None.
VT...None.

&&

$$

SYNOPSIS...NAS/Wasula
NEAR TERM...NAS/Wasula
SHORT TERM...NAS
LONG TERM...NAS
AVIATION...Wasula