-- Discussion containing changed information from previous version are highlighted. --
321
FXUS61 KGYX 122002
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
302 PM EST Sun Jan 12 2025

.SYNOPSIS...
-- Changed Discussion --
High pressure will bring mostly dry conditions tonight into
Monday. A clipper system will bring chances for snow showers
Tuesday into Wednesday, mainly in the mountains. A brief shot of
cold air arrives Thursday with temperatures then moderating
into next weekend.
-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TONIGHT/...
-- Changed Discussion --
A ridge of high pressure will crest over the area this evening
before being suppressed south and east towards Monday morning.
Mostly clear skies across much of the area will allow
temperatures to drop quickly this evening before clouds move in
overnight. These clouds will be associated from a weak wave
passing north of the area that will bring chances for scattered
flurries. Lows will range from near 20F along the coast to 10F
near the Canadian Border.
-- End Changed Discussion --

&&

.SHORT TERM /MONDAY THROUGH MONDAY NIGHT/...
-- Changed Discussion --
A weak wave aloft will be pushing east of the area Monday
morning with areas south of the mountains seeing some clearing
skies. Another weak wave will approach late Monday that will
bring more clouds and chances for snow showers in the mountains
by late afternoon. Highs will range from the upper 20s north to
upper 30s south.

Chances for snow showers will continue in the mountains Monday
night. Blocked flow along the mountains will limit chances for
snow showers south of the mountains with these areas seeing
partly cloudy skies. Snow accumulations will be light with
amounts around 1-2 inches in the higher terrain and generally
less than inch in the northern valleys. Lows will generally be
in the teens to low 20s.
-- End Changed Discussion --

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
-- Changed Discussion --
The extended portion of the forecast begins with a sharp H5
trough digging across the Northeast on Tuesday. This system will
trigger snow showers across the region. Have raised pops quite a
bit for the Tuesday timeframe similar to WFO BTV as the system
crosses through. Winds then increase and shift to the northwest
Tuesday night bringing upslope conditions and snow showers to
the northern mountains.

The relatively warm conditions on Tuesday will be replaced by
cold, Canadian air on brisk northwesterly winds by Wednesday.
The latest Bufkit files suggest at least 25kt+ winds will mix
down to the surface during this period. Temperatures will
struggle to climb through the teens in the north to the 20s in
the south. Have continued with high pops for the mountains
during this period.

A moderating trend will begin on Thursday ahead of a cold front
as it approaches from the west. This front will weaken
substantially by the time it reaches New England. 12Z models and
ensemble solutions suggest a ridge of high pressure will rebuild
over the region by Friday. This follows with a large scale
trough entering the Northeast with widespread precipitation over
the weekend.
-- End Changed Discussion --

&&

.AVIATION /19Z SUNDAY THROUGH FRIDAY/...
-- Changed Discussion --
Short Term...Mainly VFR tonight through Monday with cloud bases
greater than 5kft. VFR likely continues south of the mountains
Monday night while lowering cigs and scattered snow showers
likely bringing at least MVFR to KHIE.

Long Term...VFR will dominate the period south of the mountains. At
HIE, IFR/MVFR restrictions due to SHSN appear likely Tuesday and
Tuesday night and again late Thursday/Thursday night.
-- End Changed Discussion --


&&

.MARINE...
-- Changed Discussion --
Short Term...Offshore winds shift SW Monday as high pressure
sinks south of the waters. Winds and seas remain below SCA
thresholds until late Monday night when west winds approach 25
kts over the southern waters.

Long Term...SCA conditions likely in the Tuesday night through
Wednesday night given gusty northwest winds behind departing
low pressure. Weak ridges of high pressure before and after this
low will yield quiet conditions over the waters.
-- End Changed Discussion --


&&

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

&&

$$

NEAR/SHORT TERM...Schroeter
LONG TERM...Cannon