Area Forecast Discussion
Issued by NWS Caribou, ME-- Highlight Changed Discussion --
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FXUS61 KCAR 201651
Area Forecast Discussion
National Weather Service Caribou ME
1251 PM EDT Mon Mar 20 2017
High pressure will remain over the region today. A cold front
will cross the region Tuesday. Low pressure will move east
across the region Tuesday night through early Wednesday.
High pressure will build across the region Thursday.
.NEAR TERM /THROUGH TONIGHT/...
-- Changed Discussion --1230 PM: Just minor fcst hrly temp/dwpts chgs across the FA
based on midday obs. It appears that the going aftn fcst hi
temps will msly hold ovr the region, so no chgs planned for this
Orgnl Disc: A narrow ridge of high pressure at the surface and
aloft will remain over the area as low pressure south of Nova
Scotia slowly weakens and moves away. Based on sunny skies and
H925 temperatures, expect highs in the low to mid 40s...and a
few upper 40s readings cannot be ruled out. The ridge will
slowly weaken today into tonight and a weakening cold front will
enter the western part of the state late tonight. Increasing
high clouds ahead of the front will enter the forecast area this
evening. These clouds will dissipate later in the evening, but
a brief period of stratocumulus will arrive with the front later
in the night. These clouds and warm advection...balanced
against light winds and some clearing makes tonight`s low
temperature forecast somewhat tricky. Will go on the lower side
of guidance with upper teens to lower 20s across the region.
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.SHORT TERM /TUESDAY THROUGH THURSDAY/...
A cold front will cross the region Tuesday with mostly cloudy
skies along with a slight chance of snow showers north and
mostly/partly cloudy skies across the remainder of the forecast
area. Low pressure will move east across the region Tuesday
night through early Wednesday with a chance of snow showers. The
low will intensify while exiting across the maritimes later
Wednesday. At the same time, high pressure will begin building
toward the region. The pressure gradient between the
intensifying low and building high pressure will support gusty
northwest winds across the region Wednesday with gusts of 30 to
35 mph. These winds will transport much colder air across the
forecast area. Otherwise, expect mostly/partly cloudy skies
along with a chance of snow showers across the north and
mountains Wednesday, with partly sunny skies along with a chance
of early snow showers Downeast. High pressure begins to build
across the region Wednesday night with decreasing clouds north
and partly cloudy/mostly clear skies Downeast. Temperatures will
be at above normal levels Tuesday with below normal level
.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
High pressure crosses the region Thursday, then moves east
Friday while a warm front crosses the the region. Mostly sunny
skies are expected across the forecast area Thursday. Cloud
cover increases across the region Friday along with a chance of
snow showers north, with a slight chance of snow/rain showers
across the remainder of the region. A cold front will cross the
region Friday night into Saturday though the exact timing of the
front is still uncertain. Snow/rain showers will accompany the
front along with mostly cloudy skies. High pressure will then
build across the region Sunday. Temperatures are expected to be
at below normal levels Thursday and Sunday, with near normal
level temperatures Friday/Saturday.
.AVIATION /18Z MONDAY THROUGH SATURDAY/...
NEAR TERM: VFR through the period with a slight chance of brief
MVFR cigs late tonight for CAR and FVE.
SHORT TERM: Occasional MVFR conditions are possible across the
north and mountains Tuesday, with VFR conditions Bangor and
Downeast. MVFR/IFR conditions are then possible across the
entire region Tuesday night into early Wednesday, with
occasional MVFR conditions later Wednesday. Gusty northwest
winds will occur Wednesday with gusts of 30 to 35 mph expected.
Occasional MVFR conditions could persist across the north and
mountains Wednesday night. Otherwise, VFR conditions are
expected across the region Wednesday night through Thursday.
Occasional MVFR conditions are possible across the region
NEAR TERM: Extended the SCA through this evening as seas will be
slow to decrease with the offshore storm. Longer period south
swell up to 7-10 ft will continue much of the day.
SHORT TERM: Small craft advisory level conditions are possible
Tuesday into early Wednesday. Gale conditions are then possible
later Wednesday into Wednesday night. Visibilities could be
locally reduced in any snow showers later Tuesday night into
MARINE...Small Craft Advisory until 8 PM EDT this evening for