Area Forecast Discussion
Issued by NWS Portland, ME

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FXUS61 KGYX 270143
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
943 PM EDT FRI AUG 26 2016

.SYNOPSIS...
Cooler and drier air will filter in tonight behind a cold front.
High pressure builds in out of Canada on Saturday with another
warm day in the 70s and 80s. High pressure moves east on Sunday
as another front approaches from the west. This front will cross
the area Sunday night into Monday with another round of showers
and possible thunderstorms. High pressure for Tuesday will be
followed by a more significant cold front mid week next week.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
940 pm update: Skies generally clear across the region. A
windshift to the northwest has brought drier air with lower
dewpoints across the area. Have made minor tweaks to temperature
forecast for next few hours based on latest obs data. Very quiet
evening with no other changes needed at this time.

645 pm update: Very quiet evening with Canadian high pressure
building southeast into the area with clear skies and much lower
dewpoints. Drier and cooler temperatures will be expected
overnight. No changes needed at this time.


Showers have ended across the forecast area as a cold front has
shifted offshore. A rogue sprinkle will be possible in the
mountains but chances are not enough to include in the forecast
tonight. Most locations received less than a tenth of an inch but
some of the heavier showers have measured around a third of an
inch. Drier and cooler air will work in from the north overnight
allowing temperatures to drop into the 50s and lower 60s. The
coolest areas will be over northern Coos and Oxford counties and
draining towards the Connecticut River valley with Canadian high
pressure building in from the NW.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/...
After morning fog dissipates expect a sunny and mild day for
Saturday. Northerly winds will keep readings a tad cooler than
they would have been otherwise...with temperatures ranging from
the mid 70s north to mid 80s south. A sea breeze will develop by
the late afternoon hours slowing heating right along the coast.
Clouds will increase towards nightfall with short wave energy and
an elevated warm front in the vicinity. Still not expecting enough
moisture for showers to develop. Overnight lows will be similar to
the previous night.

&&
have overspread
.LONG TERM /SUNDAY THROUGH FRIDAY/...
A weak cold front will start to approach the area from the west on Sunday
bringing an increase in cloudiness during the day. The front will
cross the area Sunday night or Monday. The greatest chance for any
significant rain will be in the mountains. Depending on timing,
southern areas could see a thunderstorm Monday afternoon if the
front is slow to move through the area during the day.

High pressure will build in behind the front for Tuesday into
Wednesday. Another approaching front will bring another threat of
showers for Tuesday night or Wednesday. Cooler and more seasonable
air will follow the front for late next week.

Models are not in good agreement on exact timing of
fronts...especially for mid week next week. ECMWF stalls the
front until Thursday allowing more moisture to stream
northeastward along the front. This could delay the cooler air
until late Thursday or Friday.

&&

.AVIATION /02Z SATURhave overspreadDAY THROUGH WEDNESDAY/...
Short Term...VFR conditions will prevail tonight into Saturday as
a cold front and associated rain has moved offshore. Fog...some
locally dense...will develop overnight in valleys. This may bring
a few hours of LIFR to HIE and LEB in particular.

Long Term...Mainly VFR conditions expected through the period
with MVFR to IFR conditions possible in showers Sunday night into
Monday.

&&

.MARINE...
Short Term...Southwest winds will shift to the north by Saturday
morning. Waves will remain around 2-3 ft. There may be some marine
fog overnight.

Long Term...Winds and seas are expected to be below SCA criteria
through Tuesday. SCAs are possible Wednesday.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...None.

&&

$$




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