Area Forecast Discussion
Issued by NWS Portland, ME

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291
FXUS61 KGYX 261837
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
137 PM EST Wed Nov 26 2025

.SYNOPSIS...
A cold front crosses tonight into Thursday, bringing blustery
conditions for Thanksgiving through the holiday weekend. Another
cold front approaches later in the day on Sunday. Some mixed
wintry precipitation is possible Sunday night across portions
of the interior as the next wave of low pressure arrives.

&&

.NEAR TERM /THROUGH TONIGHT/...
A lingering cold air dam keeps much of Maine and central New
Hampshire socked in with low clouds and fog into this evening.
Far southern New Hampshire and the Maine coast breaks into some
warmer air by late afternoon with temps in the 50s.

The cold front associated with a broad low pressure system in
the Great Lakes pushes through during the overnight hours
tonight. This brings one more round of more organized shower
activity through the overnight hours, with the highest coverage
across northern locations. Precip may also end as a few
snowflakes along the Canadian border late tonight. The front
moves east of the area by daybreak tomorrow, with drier air
moving in behind the front.

&&

.SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/...
Drier air steadily moves in during the daytime tomorrow on a
freshening westerly breeze. More sunshine returns downwind of
the mountains with temps mainly holding in the 40s. Across the
mountains and foothills, upslope conditions brings more cloud
cover with highs in the 30s. After a mainly dry period through
the morning hours, upslope snow showers increase during the
afternoon hours as moisture from the Great Lakes begins to
arrive on westerly flow.

Temps drop into the 20s across the area Thursday night as the
colder airmass begins to settle in. The parent low in the Great
Lakes moves through Quebec during the overnight. With multiple
troughs pivoting around this low, upslope snow showers continue
through the overnight hours across the higher terrain, and
likely increase in coverage towards daybreak on Friday.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
Key Messages:
* Low pressure tracking north of the forecast area Friday will
  support snow in the mountains and occasional passing snow
  showers for the interior and foothills through the afternoon.
  Combined with breezy conditions, some of these may cause brief
  lowered visibility.
* Pattern remains active with two additional chances of
  precipitation before midweek next week.

Details: Stacked low pressure over Quebec will slowly move east
into the Canadian Maritimes Friday and Friday night. This
leaves the forecast area in broad cyclonic flow through the day
Friday. There will be weak embedded shortwaves within this
circulation, and they will aid in developing some snow showers
through Friday afternoon.

What moisture is in the low levels may be further accentuated
by moisture from the Great Lakes, leading to periods of light
snow through the day for those NW of the foothills and ridges.
Given the brisk flow, do expect some of these to carry into the
interior as snow showers. However, moisture depth overall is a
concern, and any added downslope drying will further weaken
precip downstream. Did increase PoPs above NBM suggestion into
the Kennebec Valley and eastern foothills given low level
instability, added lift from aforementioned shortwaves, and
enough moisture to at least support a flurry or sprinkle now
and then Fri afternoon.

Upper trough will tend to become more rounded, less sharp
Friday as it tracks out of the Great Lakes. This tends to slow
the arrival of LLJ into New England until later Friday. With
deep mixing, can`t rule out some surface gusts to 40 mph to go
along with some of the snow showers in the afternoon. As
mentioned, timing of the strongest winds aloft may arrive later
in the day, towards the evening. So then adds the complicating
question of how does the transport of these gusts to the surface
fair once daytime heating is waning. At this time, expect the
bulk of gusts to fall between 20 and 30 mph, with gusts to Gale
force over the coastal waters.

Upslope snow showers may continue in some capacity into early
Saturday before drying with building ridge. This keeps Saturday
dry but cool ahead of the next weather system late Sunday
through Monday morning. This system looks to take a similar
track into Quebec, but moving quickly. Deepening into the
Maritimes, there should be a period of moderate precipitation
across the forecast area as convergence at the surface and
divergence aloft suggests decent lift. Cool temperatures ahead
of this system provide the chance for snow in the mountains.
Phase and speed of the low limits the chance of a coastal low
developing. This would aid in maintaining cooler temps across
the interior, but at this time looks warm to support mostly rain
for the coast and interior.

The associated cold front will lift through by noontime Monday,
with another break of dry weather Tuesday before the next
system nears the region midweek overnight into Wednesday.



&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
Short Term...IFR to LIFR lingers across most terminals into
this evening until the passage of a cold front after midnight.
MVFR breaks are most likely at MHT, CON, and PSM this afternoon.
The front brings clearing, with most terminals returning to
MVFR and VFR late tonight toward daybreak on Thursday. VFR
prevails at most terminals through tomorrow night, but HIE and
LEB likely return with MVFR ceilings with upslope winds by late
tomorrow afternoon, persisting through tomorrow night.


Long Term...MVFR ceilings linger around the mountains Friday
through Saturday, elsewhere VFR. It will be gusty Friday with
LLT amid deep mixing. SHSN most common in the mountains, but may
spill into the foothills towards AUG/IZG/LEW. SW gusts 20 to 35
kts possible into early evening, shifting W overnight. Breezy
Saturday as well but not as strong, dry. Clouds thicken and
lower again Sunday as next system approaches late Sunday into
Monday morning. Would expect MVFR ceilings with some IFR at
times. SN may be dominant precip type for HIE and mtn region,
with RA elsewhere.

&&

.MARINE...
Short Term...A cold front clears the waters late tonight and
Thursday morning. Increasing westerly winds bring SCA conditions
by daybreak Thursday, which continue through Thursday night.
Near gale conditions are possible by daybreak on Friday.

Long Term...Gale conditions still likely Friday, especially on
the outer coastal waters. These will tend to subside for
Saturday and Saturday night, before increasing again towards
Gale Sunday afternoon. Outer waters may only be below SCA
criteria for Saturday night. Second period of Gales wanes into
Monday.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...Small Craft Advisory from 4 AM Thursday to 7 AM EST Friday for
     ANZ150-152>154.
     Gale Watch from Friday morning through Saturday morning for
     ANZ150-152-154.

&&

$$


NEAR TERM...Clair
SHORT TERM...Clair
LONG TERM...Cornwell