Rockland, Maine 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

104
FXUS61 KGYX 091914
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
314 PM EDT Wed Apr 9 2025

.SYNOPSIS...
High pressure persists through Thursday. A cutoff low then
stalls south of New England on Friday through the weekend,
bringing an extended period of cool and unsettled weather
conditions beginning Thursday night. The system then moves away
by Monday with a return to drier and warmer conditions early
next week as high pressure returns. A cold front is then
possible during the late Tuesday to Wednesday timeframe.


&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
High pressure centered over the eastern Great Lakes will drift east
tonight and into the Gulf of Maine Thursday. Steady NW to W winds
will become light and variable tonight with mostly clear skies. This
will allow for efficient radiational colling with lows dropping into
the teens and 20s.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
High pressure will provide fair weather through the day
Thursday. As the center of the high slides east through the
Gulf of Maine southerly winds will increase late morning into
the afternoon. Winds will gust around 20 mph around the coast
with lighter winds inland. Highs will generally be in the mid
40s to low 50s with clouds increasing from the west late in the
day.

Moisture will increase Thursday night as a trough of low
pressure develops over the eastern CONUS with a surface low
forming over the Carolinas. Warm air advection will bring
chances for snow showers late Thursday night across mainly NH
with a mix of rain and snow showers over SE NH. The going
forecast calls for less than an inch of snow accumulation,
although the timing could lead to slick roads early Friday
morning. Lows Thursday night will range from the 20s north to
mid 30s across southeastern NH.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
Overview...

High pressure settles across the Canadian Maritimes on Friday,
and persists through the weekend. At the same time, low pressure
moves up the east coast and stalls south of New England,
bringing an extended period of unsettled and cool conditions for
Friday through the weekend. The low then moves away by early
next week, with warmer and drier conditions returning with high
pressure. A cold front is then possible by the Tuesday to
Wednesday timeframe next week.

Details...

As high pressure remains settled to the northeast of New
England, bands of decaying precip will rotate northward from the
stalling low. The first and weaker of the bands will be falling
apart Friday morning, with the best chance for a shower across
southern areas. Once this dries up, most of the day on Friday
looks dry. Then the next band of precip moves in Friday night
into Saturday, and will be better organized than the first. Even
so, it will continue to weaken as it moves into the area,
thwarted by the high to our northeast.

With this progression, southern and coastal areas are most
likely to see the shower or light rain activity, while northern
areas stand the best chance to remain drier. The greatest chance
for POPs is likely during the day on Saturday, and then only
slowly lower into Saturday night. Lingering showers are most
likely along the coast during the day on Sunday, while northern
and interior locations trend drier. The low finally moves away
by Monday as high pressure moving in from the west brings more
progression to the pattern.

The other factor with this system will be the temperatures. An
extended period of cool northeasterly flow develops by Friday,
and linger through the weekend. Highs only top out in the low to
mid 40s in most areas on Saturday, with lows in the low to mid
30s. Some snow is possible with this system across the interior
and higher terrain, but chances have been dropping as POPs have
been trending downward. The airmass will be cool enough to
support some snow, but sufficient precip rates will be required
to achieve it. At this point the best chance looks confined to
the higher terrain, while heavier precip rates that don`t look
likely at this point will be required elsewhere.

The system moves away by Monday, with increasing sunshine and
warming temperatures as high pressure moves in from the west. A
return to the upper 50s and 60s looks likely for Monday and
Tuesday, and then a cold front is possible by later Tuesday and
into Wednesday.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
Short Term...Mainly VFR tonight through Thursday. Clouds thicken
and lower Thursday night with rain and snow showers developing
late Thursday night across NH. This will likely lead to MVFR
conditions Thursday night.

Long Term...Some MVFR ceilings with lingering showers are
possible across southern terminals on Friday, but otherwise
mainly VFR are expected. MVFR to IFR conditions likely arrive
from south to north Friday night, with rain likely south, and
rain and snow possible across northern terminals. IFR conditions
likely linger through Saturday, with gradually more breaks of
MVFR ceilings from Saturday night through Sunday, especially
across the northern terminals. Conditions likely gradually
return to VFR from west to east Sunday through Sunday night.
Mainly VFR is then expected for Monday into Tuesday.

&&

.MARINE...
Short Term...High pressure slides across the waters tonight and
Thursday for diminishing winds and seas tonight. Southerly flow
increases Thursday while winds and seas stay below SCA
thresholds through Thursday night.

Long Term...High pressure settles across the Canadian Maritimes
Friday, and persists through the weekend. At the same time, low
pressure stalls south of New England, possibly bringing an
extended period of SCA conditions in northeasterly flow from
late Friday night through Sunday. The low then moves east by
early next week as high pressure builds in from the west.

&&

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

&&

$$


NEAR TERM...Schroeter
SHORT TERM...Schroeter
LONG TERM...Clair