65.3F
Current conditions from King Hill
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  Monday September 16, 2019

 

NWS Area Forecast Discussion


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000
FXUS61 KBTV 151853
AFDBTV

Area Forecast Discussion
National Weather Service Burlington VT
253 PM EDT Sun Sep 15 2019

.SYNOPSIS...
Cloud cover will continue to increase across the North Country this
afternoon as a series of upper level disturbances push through the
region. Rainfall, for the most part, will fall south of the forecast
area with decreasing clouds expected on Monday. Afternoon high
temperatures on Monday will be a few degrees below normal with
readings in the mid to upper 60s but will gradually warm each day to
above normal temperatures by Friday with highs in the mid to upper
70s. It`s possible we could see 80 degree temperatures across the
Champlain and St. Lawrence Valleys by next weekend but most
locations should remain in the 70s. With strong high pressure
building into the region, it`s looking like we shouldn`t see much in
terms of either clouds or rain this week.

&&

.NEAR TERM /THROUGH MONDAY NIGHT/...
As of 252 PM EDT Sunday...Cloud cover ahead of a series of shortwaves
will continue to overspread the North Country this afternoon.
Although radar images continue to show light echoes (20-30 dBZ), the
bulk of the rainfall is evaporating before being able to make it to
the ground. Model soundings show a plethora of dry air in both the
mid-levels and low- levels which should continue to evaporate much of
the rainfall as it falls through the atmosphere. There could be a
few pockets of light drizzle in areas with the highest returns but
no measurable rainfall is expected this afternoon. A second and more
potent shortwave will arrive late tonight but it look like it should
drop to our south which would leave us once again on the dry side.
The models show increasing and steepening northwesterly flow aloft
which supports the theory that the rainfall tonight and early
tomorrow morning will remain to our south. There could be some
pockets of fog, mainly across eastern Vermont, overnight but should
be patchy in nature with any fog that does develop overnight.

Monday looks like it`ll the epitome of a beautiful late summer day
across the North Country. Surface high pressure will begin to
establish itself across the region on Sunday and drier air will
begin to filter in from Canada. Temperatures will be a few degrees
cooler than today with highs climbing into the mid to upper 60s.
Skies will clear throughout the day with mostly sunny, if not clear,
skies expected by late afternoon. Monday night will be on the chilly
side with lows in the upper 30s to upper 40s.

&&

.SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
As of 252 PM EDT Sunday...1026 mb high pressure centered over eastern
Quebec will supply another beautiful early fall day to the
North Country Tuesday with mostly sunny skies, light winds, and
low humidity. 850 mb temperatures around 5 deg C support surface
high temperatures in the mid to upper 60s. Overnight lows
Tuesday night will be chilly under mostly clear skies. Parts of
the Northeast Kingdom of Vermont and the northern Adirondacks of
New York will drop into the mid 30s, where the potential for
some patchy frost does exist. The rest of the forecast area will
see lows in the low to mid 40s.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
As of 252 PM EDT Sunday...Continued strong consensus amongst
both deterministic and ensemble models in anomalously strong
ridging building in through the end of the week...leading to
high confidence in a prolonged period of dry weather. Initially,
deep northerly flow will be in place with upper ridge axis to
our west and surface high pressure to our north. As the week
progresses and the high shifts further east, the magnitude of
cold air advection will decrease. Eventually by Thursday, upper
ridge axis will be overhead and surface high shifts
southeastward to Mid Atlantic Coast, leading to developing
southwesterly return flow. Consequently, expecting a warming
trend as the week goes on with temperatures in the upper 60s/low
70s on Wednesday...pushing close to 80 by the weekend. Lack of
moisture in the atmosphere will initially support effective
radiational cooling Wednesday night with lows in the 40s, but
the onset of warm air advection/moisture advection Thursday will
keep overnight lows generally above 50 deg F through the end of
the week.

&&

.AVIATION /19Z SUNDAY THROUGH FRIDAY/...
Through 18Z Monday...Winds will continue to shift from the
southwest to west this afternoon with a broken cloud deck around
10,000 ft. Winds should generally remain 10 knots or less but
occasional gusts at most terminals cannot be ruled out given the
degree of warming so far this afternoon. A mix of fog and low
stratus will develop overnight with IFR to LIFR fog developing
at KMPV after midnight with IFR ceilings developing near KSLK
several hours after midnight. This low stratus and fog will mix
out by 13Z under ample sunshine on Monday with scattered mid to
high clouds and winds once again 10 knots or less from the
west/northwest.


Outlook...

Monday Night: VFR. NO SIG WX.
Tuesday: VFR. NO SIG WX.
Tuesday Night: VFR. NO SIG WX.
Wednesday: VFR. NO SIG WX.
Wednesday Night: VFR. NO SIG WX.
Thursday: VFR. NO SIG WX.
Thursday Night: VFR. NO SIG WX.
Friday: VFR. NO SIG WX.

&&

.BTV WATCHES/WARNINGS/ADVISORIES...
VT...None.
NY...None.

&&

$$
SYNOPSIS...Clay
NEAR TERM...Clay
SHORT TERM...Duell
LONG TERM...Duell
AVIATION...Clay


 
 
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