922
FXUS61 KBTV 051756
AFDBTV
Area Forecast Discussion
National Weather Service Burlington VT
1256 PM EST Wed Nov 5 2025
.SYNOPSIS...
Wind gusts of 30 to 50 mph will be possible this evening as a strong
clipper system impacts our region with more valley rain and mountain
snow showers. Winds will be highest in the downslope regions of the
eastern Adirondacks and eastern Green mountains. Unsettled weather
will continue into the weekend. Temperatures will be near seasonable
levels for most of this week.
&&
.NEAR TERM /THROUGH THURSDAY/...
As of 248 AM EST Wednesday...
* A Wind Advisory remains in effect for portions of Northern
New York and portions of northern, central, and southern
Vermont for winds 15 to 25 MPH and gusts 35 to 50 MPH from 4
PM Today until 1 PM Thursday.
A few passing clouds are lingering across northern Vermont this
morning downstream of an approaching developing strong clipper
system over the Midwest/Great Lakes. 500mb surface analysis shows
subtle ridging over the Golden Horseshoe with a shield of mid/upper
level clouds spreading eastward. While flow will become southerly
today, cloud cover and cooling air aloft will limit the diurnal
heating potential with highs a few degrees cooler than yesterday
into the mid to upper 40s. Frontogenesis along a warm front leading
the system will arrive by sunrise in northern New York with a band
of light rain/mtn snow showers. Snow will be mainly confined to
elevations above 2500 ft agl before diurnally increasing
temperatures limit any meaningful snow accumulations later in the
day. Initial QPF should be light with a dry surface, before
saturating later this afternoon. Showers will spread across the
region by this afternoon. This will be another high PoP/low QPF
situation with the quickly moving system. A strong LLJ in
association with the deepening system will increase winds aloft to
near 60 mph, with top of the mixed layer to 55 mph. Winds will
increase to 20 to 30 mph during the day Wednesday.
Wednesday night, gusty west-northwest winds will ramp up as the core
of the LLJ shifts over the region. Mean surface winds of 15 to 25
mph with gusts up to 50 mph are expected in the eastern facing
slopes of the Adirondacks and Green Mountains. The most favorable
locations for these higher winds will be between Ticonderoga and
Plattsburgh in New York, and between Ludlow and Strafford in
Vermont. Probabilities of at least 40 mph on the HREF are 80-100%
across the eastern Greens and Adirondacks, so this leads to
increasing confidence in the realization of higher winds aloft
mixing down. Winds will be the strongest from midnight Wednesday
night through sunrise Thursday morning. A Wind Advisory remains in
effect for portions of northern New York and Vermont as a result.
Outside of the wind threat, precipitation amounts have generally
lowered in the Champlain Valley as the system quickly exits by
Thursday afternoon. The best chances for precipitation will occur
with the passage of a cold front early tonight and with any
associated upslope shower activity that will follow. Expect QPF
around a few tenths in the Champlain Valley and southern Vermont
with around an inch possible in the upslope regions of the
Adirondacks and Greens, as well as the Northeast Kingdom. The cold
front could have an isolated rumble of thunder or two underneath the
low, in the southern CPV. Surface instability driven by the system
vort max, in addition from orographic uplift on the southwestern
Greens, could be enough to provide some surface CAPE to a couple
hundred J/kg. Notably, the biggest change since yesterday is that
the system center looks to pass through the region, a bit further
south, which should reduce the isolated thunder potential, albeit
chances are still non-zero. Once the cold front passes, thermal
profiles will tank with strong caa in the ADKs and western Greens.
Snow level should lower 1500ft agl by Thursday morning. For now, the
forecast shows a slushy dusting to a inch around 1500ft, 1 to 4
inches from 2000 to 3000 ft, and 4 to 8 at summit level at Mt.
Mansfield and Jay Peak. Impacts look to be minimal with snow
accumulations fairly localized to the immediate high terrain and
upper ridges, especially with surface temperatures still above
freezing. The Northeast Kingdom, particularly Essex County in
Vermont, would be the most favorable for any meaningful
accumulations, with widespread 1 to 2 inches even in the valleys
possible. Though these amounts are still expected to be below winter
weather advisory criteria. The clipper system will race off to the
east Thursday afternoon, with clearing skies areawide but cooling
temperatures into the low 30s with strong caa.
&&
.SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY/...
As of 248 AM EST Wednesday...The region should be able to dry out
with clearing skies Thursday night into Friday morning as brief high
pressure attempts to build into the area from the Mid-Atlantic.
Temperatures will cool quite rapidly behind the Thursday system with
lows into the low 20s and perhaps mid to upper teens in cool hollows
of the Adirondacks. Lake Champlain should be able to limit drastic
cooling in the Champlain Valley, but even lows to near or just below
freezing are possible. Once again, calm weather will be short lived
as another approaching system will pass to our north. A transient
low over Quebec with an associated cold front draped south will pass
through the region Friday afternoon with additional rainfall
chances. Due to positioning of the system, we should remain in the
warm sector resulting in a mainly rain event for most areas, outside
of a few wet flakes in the higher elevations at the leading edge of
the precipitation before latent heating and waa take hold.
Temperatures will remain seasonable to near 50 for daytime highs on
Friday.
&&
.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
As of 342 AM EST Wednesday...A light to moderate rainfall is on track
for Friday night as the best upper level forcing stays much to our
north, detached from the prefrontal wave that will support the
widespread rain over our area. The surface front will likely pass
through uneventfully on Saturday with a lack of a strong pressure
rise/fall couplet. As weak high pressure builds in on Saturday,
lingering showers and clouds will gradually give way to some
clearing skies.
The quiet weather still looks short lived as widespread rain
returns on Sunday. There seems to be a faster trend, with rain
increasingly likely as early as Sunday morning spreading from
southwest to northeast during the day. Given the antecedent air
mass will be marginally cold for snow, the overrunning
precipitation could begin as snow before changing over to rain.
As we get closer to the event, we`ll also have to consider a
transition period with even pockets of freezing rain given the
favorable synoptic setup with low level easterly winds and low
track to our west. Eventually, regardless of the exact storm
track and possible switch of rain back to snow before the system
winds down, we`ll see a return to westerly winds and sharply
colder air by Monday. Still looks like a favorable lake- effect
setup for Monday into Tuesday as the coldest air mass of the
season moves over the region, although it remains to be seen if
low level winds will favor an orientation south of the region or
into the northern Adirondacks and potentially Vermont if the
bands are strong enough.
&&
.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
Through 18Z Thursday...Aviation hazards for the next 24 hrs will
be concentrated in the 20Z-14Z timeframe as a strong frontal
system moves through the region. Most hazardous conditions will
be related to LLWS along/ahead of the front with IFR to MVFR
categories associated with ceilings and precipitation. Starting
with a mix of primarily VFR and a few spots of MVFR as light
rain from a relative warm front moves through the region lowers
CIGs, conditions will worsen after 00Z as heavier precipitation
moves into the region and as snow mixes in with rain at SLK/MPV.
Strong surface gusts are anticipated along and behind the front
with some terminals seeing gusts to 35kts. Southern Vermont has
the best chances of seeing gusts in excess of 40kts overnight as
the boundary moves out of Vermont. Categorical improvements are
likely after 12Z with winds dropping and clouds lifting as drier
air moves into the region.
Outlook...
Thursday Night: VFR. Slight chance FZRA.
Friday: VFR. Chance RA, Chance FZRA.
Friday Night: Mainly MVFR, with areas VFR possible. Definite RA.
Saturday: Mainly MVFR, with areas VFR possible. Chance RA.
Saturday Night: MVFR/IFR conditions possible. Chance RA, Chance
SN.
Sunday: Mainly IFR, with areas MVFR possible. Likely RA, Likely
SN.
Sunday Night: Mainly MVFR, with areas IFR possible. Likely RA,
Chance SN.
Monday: Mainly VFR, with areas MVFR possible. Chance SN.
&&
.BTV WATCHES/WARNINGS/ADVISORIES...
VT...Wind Advisory from 4 PM this afternoon to 1 PM EST Thursday
for VTZ005-008>011-017>021.
NY...Wind Advisory from 4 PM this afternoon to 1 PM EST Thursday
for NYZ034-035.
&&
$$
SYNOPSIS...Danzig
NEAR TERM...Danzig
SHORT TERM...Danzig
LONG TERM...Kutikoff
AVIATION...Boyd
|
