Area Forecast Discussion
Issued by NWS Burlington, VT

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FXUS61 KBTV 151141

Area Forecast Discussion
National Weather Service Burlington VT
641 AM EST Sun Jan 15 2017

As an upper level disturbance moves across the area this
morning producing some light snow...primarily over the northern
Adirondacks of New York and the northern half of Vermont. Very
little in the way of accumulation is expected. High pressure
builds into the region from Canada this afternoon and remains
over the area through Monday. Thus drier weather is expected and
a warming trend will begin starting Monday.


As of 505 AM EST Sunday...Areal coverage of light snow has
increased over the northern half of Vermont this morning and
have adjusted the forecast to indicate a greater likelihood for
light snow...but still with very little in the way of
accumulation. Otherwise...clouds will continue to linger over
the area through this afternoon with highs in the upper teens to
upper 20s.

High pressure builds into the region tonight and Monday. As a
result...dry weather is expected during this time period. More
sunshine is expected on Monday and with developing southerly
flow...high temperatures should be several degrees warmer than
Sunday with readings getting into the upper 20s to mid 30s.


As of 259 AM EST Sunday...Generally quiet conditions are
expected for Monday night through the majority of Tuesday as
surface high pressure persists over the North Country. For
Monday night, weak shortwave energy passing north of the area
combined with some lingering low level moisture may spark a few
snow showers across our northern tier zones, but most of the
area should remain dry under partly cloudy skies. Tuesday begins
a warming trend that we`ll see through the week with highs
pushing well into the 30`s area-wide with southerly flow
increasing ahead of our next system. More on that below.


As of 259 AM EST Sunday...Active weather returns for the mid-
week time-frame as we continue to monitor the likelihood for yet
another mixed precipitation event, followed by mainly dry
conditions to end the work week with well above normal
temperatures expected.

Consensus amongst the latest runs of GFS/ECMWF/GEM have slowed the
arrival time of precip compared to yesterdays model suite, but
overall the synoptic pattern hasn`t changed much highlighting
primary low pressure pulling through the Great Lakes on Tuesday,
with a secondary low developing along the Maine coast Wednesday
afternoon/night. Trends on this mornings runs though have favored a
weaker primary low and stronger secondary offering slightly cooler
925mb temps Tuesday night which has changed our forecast a bit to
limit the potential for freezing rain, and highlight more of a snow
sleet mix instead. Mix hangs on a little longer into Wednesday
morning across eastern Vermont as well, before warm air advection
wins over by 18z where thereafter rain is the dominant ptype until
the secondary low develops Wednesday afternoon/evening and colder
air returns aloft supporting a transition to rain/snow mix Wednesday
night. Still several days away to dial in the forecast, but our
first guess at accumulations is a couple of inches of snow and sleet
east of the Greens Tuesday night into Wednesday morning, enough to
make for a messy commute. As the secondary low bombs out over the
Gulf of Maine, north-northwesterly low/mid level wrap around
moisture will keep some scattered rain and snow showers around for
Thursday, but by days end surface high pressure and an upper ridge
building over the central CONUS will begin to shift eastward. Highs
Wed/Thu will be in the mid 30s to low 40s, and lows in the upper 20s
to low 30s

Friday/Saturday are dominated by high pressure both at the surface
and aloft, with mid-levels remaining very mild for late January
supporting highs continuing well above normal in the mid 30s to low
40s under partial sunshine.


.AVIATION /12Z Sunday THROUGH Thursday/...
Through 12Z Monday...Band of clouds continues to move southeast
across the area producing VFR to MVFR ceilings. In addition...some
light snow is also occurring at KSLK...KPBG...KBTV...and KMPV
and will do so through 15z. This will result on VFR and MVFR
visibilities with brief periods of IFR visibilities. After 16z
the clouds will decrease in areal coverage and any light snow
showers will come to an end. Therefore looking at VFR conditions
for the remainder of the period with high pressure building in.
West to northwest winds will gust into the 15 to 20 knot range
this morning before tapering off and becoming light and variable
around 00z.

12z Monday onward...Primarily VFR with surface high pressure
through 18Z Tuesday. Next large-scale precipitation system
tracks to our west Late Tuesday afternoon into Wednesday.
Trending MVFR with intervals of IFR in widespread precipitation,
possibly as early as late Tuesday, but more likely Tuesday
night or Wednesday.

Thursday...mainly becoming VFR as a ridge of high pressure
builds into the region.




NEAR TERM...Evenson
LONG TERM...Lahiff
AVIATION...Evenson/MV is the U.S. government's official web portal to all federal, state and local government web resources and services.