515
FXUS61 KBTV 210925
AFDBTV
Area Forecast Discussion
National Weather Service Burlington VT
425 AM EST Sat Dec 21 2024
.SYNOPSIS...
Light snowfall will continue through much of today before
tapering off this afternoon. High pressure will be moving into
with strong cold air advection and breezy winds this afternoon
through Sunday resulting in frigid wind chill temperatures
tonight into Sunday morning. Winds decrease Sunday with cold air
lingering through Monday. The next weather system to impact the
region will move through Monday night and Tuesday bringing more
snowfall and potential for periods of difficult travel
conditions.
&&
.NEAR TERM /THROUGH SUNDAY/...
As of 401 AM EST Saturday...
* A Cold Weather Advisory is in effect starting at midnight
tonight and continuing through 9 AM Sunday morning for the
communities of the Adirondacks. Dangerous wind chill
temperatures between -15 and -25 degrees are expected.
The main change to the forecast was to linger upslope snowfall
across the northwestern Adirondacks and northern Green Mountains
through this afternoon into the overnight hours. Another 1 to 3
inches of snow accumulation will be possible with a dry, fluffy
character. Otherwise, the primary concern through Sunday will
be for frigid temperatures across the North Country as an
anomalously strong 1030-1040mb high pressure moves through the
region. Temperatures combining with some breezes to around 20
mph tonight will create dangerously cold wind chill
temperatures for the communities in the Adirondacks; -15 to -25
degree wind chills are expected tonight through Sunday morning.
Additionally, those with plans for recreation at higher
elevations of the Adirondacks and Greens should expect colder
wind chills generally -30 to just less than -40 degrees.
Frostbite and hypothermia are the main concerns to those that
are not properly dressed for these conditions. Elsewhere, -5 to
-15 wind chills are anticipated. Winds will slow Sunday with the
center of the high overhead. Ambient maximum temperatures for
Sunday will be cold with highs struggling in the single digits
above zero to mid teens in the Champlain Valley.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH MONDAY/...
As of 401 AM EST Saturday...High pressure will remain situated across
the region Sunday night into Monday, bringing clear and cold
conditions. Overnight lows will plummet into the single digits above
and below zero across the region, with locations in the Adirondacks
even colder with ideal radiational cooling and recent snowpack.
These temperatures will be nearly 20 degrees colder than
climatological normals for this time of year. Winds look to remain
relatively light with the high directly overhead, but temperatures
will still be frigid so anyone that may be venturing outside should
take extra care to limit their exposure to the cold and stay warm.
Monday will start out dry with high pressure shifting eastward, with
increasing cloud cover through the day as our next system approaches
the region. Temperatures will continue to be below normal, but will
be warmer compared to Sunday, with daytime highs climbing into the
teens and lower 20s. Chances for precipitation will gradually
increase throughout the morning, with snow showers reaching the St.
Lawrence Valley by Monday evening.
&&
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
As of 401 AM EST Saturday...Another round of widespread snowfall will
arrive Monday night into Tuesday as a shortwave traverses across the
region, continuing to bring the likelihood of a white Christmas to
the region. Precipitation will arrive across northern New York
Monday evening and slowly progress eastward across Vermont Tuesday.
There are still some uncertainties as to how quickly precipitation
will end, with more progressive solutions having precipitation
ending by Tuesday evening while others show snow showers lingering
into Christmas Day.
After this system, a blocking pattern looks to develop with a
pronounced ridge settling over New England. This pattern will bring a
period of dry weather for the latter half of the work week. Daytime
highs will generally be in the low to mid 30s, with overnight lows
in the teens to lower 20s.
&&
.AVIATION /09Z SATURDAY THROUGH WEDNESDAY/...
Through 06Z Sunday...Widespread MVFR/IFR is occurring with snow
falling across the North Country. Winds increasing aloft will
temper some of the IFR conditions for BTV likely lifting CIGs
and pinning marginally heavier snow rates closer to the Greens,
but conditions could be intermittently IFR through 12Z should
periods of increased snowfall rates occur. Conditions improve
to MVFR for most terminals 12-18Z with continued mountain
obscurations and gusts 15-20kts. Mountain snow showers are
expected to linger through 03Z with potential for continued
light snow at SLK for much of this forecast period.
Outlook...
Sunday: VFR. NO SIG WX.
Sunday Night: VFR. NO SIG WX.
Monday: VFR. NO SIG WX.
Monday Night: Mainly VFR, with areas MVFR and IFR possible.
Likely SHSN.
Tuesday: Mainly MVFR, with local VFR possible. Chance SHSN.
Tuesday Night: Mainly MVFR, with areas VFR possible. Slight
chance SHSN.
Christmas Day: VFR. NO SIG WX.
&&
.BTV WATCHES/WARNINGS/ADVISORIES...
VT...None.
NY...Cold Weather Advisory from midnight tonight to 9 AM EST Sunday
for NYZ029>031-034.
&&
$$
SYNOPSIS...Boyd
NEAR TERM...Boyd
SHORT TERM...Kremer
LONG TERM...Kremer
AVIATION...Boyd
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