246
FXUS61 KBGM 151835
AFDBGM

Area Forecast Discussion
National Weather Service Binghamton NY
235 PM EDT Tue Jul 15 2025

.SYNOPSIS...
High pressure remains in place through tonight bringing mostly
clear skies and warm, muggy conditions. Very warm and humid
conditions remain in place through Thursday with scattered
showers and thunderstorms starting Wednesday afternoon and
evening. A few storms could produce heavy downpours. It looks to
dry out with lower humidity levels for Friday and Saturday,
along with seasonably warm temperatures.

&&

.NEAR TERM /THROUGH WEDNESDAY NIGHT/...
200 PM Update...

Air quality will be an issue through this evening across CNY as
smoke aloft and haze from Canada slides into the region, thus
an Air Quality Alert has been issued for small particulates
across most of Central NY (except Sullivan county). Otherwise,
skies will be mainly sunny with seasonably warm temperatures
this evening.

Tonight remain mostly clear, warm and muggy as the ridge axis
slides east of the area and SW flow pushes a southern airmass
into the region. Temperatures and dewpoints will be in the mid
to upper 60s once again. There could be some patchy fog around.

Wednesday will remain hot and muggy, with temperatures and
dewpoints a few degrees warmer than Today. Heat indices are
expected to reach advisory criteria for the Finger Lakes,
portions of the Southern Tier and Mohawk Valley. Confidence has
increase, and a Heat Advisory is now in effect for these area
from 11 AM to 8 PM Wednesday. Highs will be in the mid 80s to
lower 90s and with dew points 70 to 75 peak heat indices will
reach well into the 90s over the region.

A strong shortwave is expected to move into the area late Weds
afternoon or early evening, bringing increasing clouds, showers
and t`storms across the region, which could eventually lower
temperatures by the evening, at least for western portions of
the area. There remains uncertainty on exact timing for the
clouds showers and storms to arrive, but the latest guidance is
trending later, mainly after 4-6 PM for most locations.

Model soundings show a very moist atmosphere with long, skinny
CAPE and deep warm cloud depths, leading to storms producing
heavy rain and possible flash flooding. PWATs will reach 1.6 to
1.9 inches by Wednesday evening, along with MLCAPE of 1500-2500
J/kg expected. Bulk shear is fairly light, between 15-25 kts
which should limit severe storm potential. However, with the
high instability a stray stronger or even isolated severe pulse
storm cannot be ruled out. SPC now has the western half of the
area in a Marginal Severe Risk (level 1 of 5). The main potential
with any of these stronger storm will be isolated damaging wind
gusts. DCAPE values on the 12z GFS soundings have increase to
around 1000 J/kg in the late afternoon & evening, and this
indicates the potential for those wind gusts with the storms.

A Slight Risk for excessive rainfall leading to flash flooding
is present across NEPA Wednesday afternoon into Wednesday night.
With the recent heavy rain over this area Sunday and Monday,
flash flooding will be achieved easier (with lower flash flood
guidance) thus necessitating the Slight Risk. The rest of the
region is under a Marginal Risk where slow moving storms dropping
heavy rain could cause isolated flash flooding issues. At this
time, confidence was not quite high enough on the timing and
location of convection to issue any flood watches, but if
confidence does increase watches may be needed. Scattered
showers and storms continue into Wednesday night along with
mainly cloudy skies and warm, humid conditions. Overnight lows
only dip down into the upper 60s and lower 70s areawide.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
Showers and thunderstorms will be likely on Thursday as an
additional surge of moisture moves in a head of an approaching
cold front. Locally heavy rainfall will again be possible with
PWATs around 1.75". It will remain warm and humid with highs in
the mid to upper 80s. Drier air will begin to advect in Thursday
night, which will allow for showers and thunderstorms to
gradually end.

By Friday, high pressure moves into the area behind the
departing cold front. This will result in much cooler and less
humid conditions with highs in the mid 70s to near 80 degrees
and dewpoints in the mid 50s to lower 60s. A stray shower cannot
be totally ruled out, but trends continue to trend towards a dry
day with mostly sunny skies. With high pressure overhead Friday
night and a cool airmass in place, temperatures Friday night
will dip down to at least the upper 40s to upper 50s.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
High pressure will continue to bring mainly dry and mostly sunny
weather on Saturday. Temperatures are expected to be slightly
warmer compared to Friday (highs in the upper 70s to lower 80s),
but lower dewpoints should keep humidity levels rather low. An
approaching frontal system will bring an increasing chance for
showers and thunderstorms on Sunday. Drier weather arrives for
Monday and Tuesday with weak ridging in place, but cannot rule
out a couple of shortwaves moving through, which could result in
a slight chance for some additional showers. Temperatures in the
long term will otherwise remain seasonable with highs in the 70s
and 80s.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
VFR conditions are expected to prevail through at least this
evening. By late tonight/early Wednesday morning, patchy
fog/mist will be possible at KAVP, KBGM, and KELM, which may
result in at least MVFR restrictions. Despite clear skies and
light winds, confidence is a bit lower than usual for fog
development at KELM due to their being a possibility that
overnight low temperatures remain well above the crossover
temperature there. Any restrictions likely end by 12Z Wednesday,
which will result in a return to mainly VFR conditions.

Outlook...

Late Wednesday afternoon into Wednesday night...Scattered
showers and thunderstorms could bring occasional restrictions.

Thursday...Restrictions likely with a few rounds of showers and
thunderstorms.

Friday through Saturday...Mainly VFR.

Sunday...Occasional restrictions possible in showers and
thunderstorms.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...None.
NY...Air Quality Alert until midnight EDT tonight for NYZ009-
     015>018-022>025-036-037-044>046-055>057.
     Heat Advisory from 11 AM to 8 PM EDT Wednesday for NYZ015>018-
     023>025-036-037-055-056.

&&

$$

SYNOPSIS...MJM
NEAR TERM...MJM
SHORT TERM...BJG
LONG TERM...BJG
AVIATION...BJG