Atkinson, Maine Weather Forecast Discussion

896
FXUS61 KCAR 261816
AFDCAR
Area Forecast Discussion
National Weather Service Caribou ME
216 PM EDT Fri Sep 26 2025
.SYNOPSIS...
A cold front will push offshore early tonight. High pressure will
build in from the west on Saturday cresting over the area late in
the day. High pressure will move east of the region Saturday night.
A weak cold front will cross the area Sunday. High pressure will
build south of the area Monday then slide east of the region
Tuesday.
&&
.NEAR TERM /THROUGH SATURDAY NIGHT/...
Rest of this afternoon...A secondary cold front is approaching
from the NW with some isolated to scattered rain showers. Much
of the area is seeing partly to mostly sunny skies with
temperatures in the 60s to low 70s. The race is on with the cold
front approaching and showers mainly being sustained by diurnal
heating and the sun sets now around 625PM. Will keep any showers
confined to Northern Maine but quickly ending as the sun sets. A
little bit of a challenge tonight as 850mb temps cool there is
clearing skies but some clouds may remain. At the same time the
pressure gradient never truly weaken which will keep the air
stirring in many locations. However, valley locations across the
northern 1/2 of the CWA may decouple and see rapid cooling. Did
opt to mix in some NBM 50th percentile temps in locations that
may decouple. This means we could see some 30s producing patchy
to areas of frost in the North Woods mainly along and west of
Route 11 in Northern Maine. The Frost/Freeze program has ended
in these locations. Elsewhere in Northern Maine, expect upper
30s to low 40s where decoupling does take place and low to mid
40s where it does not occur. Central Highlands to Bangor Region
including east to Danforth looking at mid to upper 40s tonight.
Downeast will be the warmer spots falling back into the low
50s.
Tomorrow a 1016mb sfc high once again, theme of the pattern the
last 90 days, will drift SW of the area. Expect another dry day
and beautiful sunshine. Winds will be light W-NW downslope off
the Longfellows which means cooler temps north and warmer temps
south. Highs in the upper 60s to low 70s for the Bangor Region,
Upper Penobscot Valley south to the Downeast. Across Northern
Maine and Central Highlands expecting only low to mid 60s.
Tomorrow night another tricky one with the high drifting south
over the Gulf of Maine and then eventually east of Georges Bank
expecting increasing upper level clouds as return flow starts.
Expecting some locations across the north to dip back into the
30s and low 40s with intially clear skies and light winds.
Elsewhere, generally across the Highlands to the Downeast
expecting 50-55F temps. A weak cold front will approach the NW
zones by early morning and might see a few isolated showers.
&&
.SHORT TERM /SUNDAY THROUGH MONDAY/...
We will be on the southern end of a weak cold front trailing south
from low pressure over Hudson bay on Sunday. The gradient between
this low to the north and higher pressure to the south will bring a
gusty west wind. A couple brief light showers may stray across
northern areas around midday as the cold front sweeps through.
Sunday night will be mostly clear as high pressure builds in behind
the cold front. Only moderately cooler air will follow the front
with lows Sunday night from the mid 40s north to near 50 south.
High pressure will build south of the area Monday as a weak surface
trough of low pressure slides south through Quebec. This will bring
a mostly sunny day, perhaps becoming partly cloudy over the far
north late in the day. It will be breezy and mild with highs above
70 across most of the area.
&&
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
A cold front will cross the area Monday night ushering in moderately
cooler air with lows generally in the 40s across the area. The
gradient will probably be strong enough for at last a light breeze
to continue overnight.
High pressure building down from central Canada and tracking south
across Hudson bay on Tuesday will continue pushing cooler and drier
air in from Eastern Canada. The cooler air pushing in aloft will mix
down some strong westerly winds aloft to bring a gusty northwesterly
breeze on Tuesday.
Cold high pressure building down from the northwest will bring a
cold night Tuesday night. Lows will likely drop below freezing in
the northwest and down into the low 40s Downeast Tuesday night.
Strong Canadian high pressure will continue to slowly approach from
Hudson Bay on Wednesday bringing brisk and chilly conditions and
some stratocumulus clouds mixed with sunshine, likely more
cloudy north and more sunny Downeast. Highs in most areas will
only be in the 50s with a few 60s over southern Downeast areas.
This will be followed by a cold night Wednesday night with lows
below freezing in the northwest and in the upper 30s Downeast. A
strong gradient along the eastern edge of high pressure may
continue to bring a breeze overnight.
High pressure dropping west, then southwest of the area will support
upper ridging building in from the west late in the week. This will
bring dry weather with some moderation in temperatures. Highs
Thursday should approach 60 and highs Friday will reach the mid
60s.
&&
.AVIATION /14Z FRIDAY THROUGH TUESDAY/...
NEAR TERM: VFR the rest of this afternoon with SCT MVFR cigs at
northern terms. FEW MVFR cigs at BGR. W-NW winds 5-15kt gusting
to 25kt at times. Tonight, VFR cigs turning SKC. Light and
variable winds. LLWS at FVE and CAR between 06-12z. BR/BCFG may
reduce vsby after 06z. Confidence is low on BR coverage and may
be more BCFG. Tomorrow, SKC with high VFR cigs late day. NW
winds 5-15kt.
SHORT TERM:
Sunday...VFR Gusty W wind around 10 to 15 mph.
Sunday night...VFR. Light W wind.
Monday...VFR. Gusty W wind around 10 to 15 mph.
Tuesday...VFR. Gusty NW wind around 10 mph.
Tuesday night...VFR. Light NW wind.
Wednesday...VFR. Gusty N wind around 10 mph.
&&
.MARINE...
NEAR TERM: Small Craft Advisory remains in effect through 6PM
EDT this evening for Schoodic Point to Eastport out 25nm. Buoys
continue to read 4-6ft seas at 6-7sec periods. No SCA on the
Intra-Coastal waters since expiring that earlier this afternoon.
These seas will subside this evening to generally 2-4ft across
the waters. Seas continue to subside to 1-3ft tomorrow
afternoon. SW winds this afternoon shift NW tonight then back
westerly tomorrow but remain less than 15kt. Winds will shift
southerly Sat night generally less than 15kt with seas subsiding
to 1-2ft.
SHORT TERM:
Winds are expected to remain below SCA through next week. Long
period swell from Hurricane Humberto may build to 5 ft Tuesday night
and 6 to 7 ft Wednesday, then slowly subside toward the end of the
week.
&&
.CAR WATCHES/WARNINGS/ADVISORIES...
ME...None.
MARINE...Small Craft Advisory until 6 PM EDT this afternoon for
     ANZ050>052.
&&
$$
Near Term...Sinko
Short Term...Bloomer
Long Term...Bloomer
Aviation...Sinko/Bloomer
Marine...Sinko/Bloomer

NWS CAR Office Area Forecast Discussion