834
FXUS61 KGYX 120742
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
342 AM EDT Mon May 12 2025

.SYNOPSIS...
High pressure centered east of New England maintains mostly dry
conditions through mid week with high temperatures in the 70s
across the interior and in the 60s along the coast. Moisture
increases through the second half of the week bringing chances
for showers and possibly some afternoon thunderstorms. A trough
approaches late in the week bringing higher chances for showers
over next weekend.

&&

.NEAR TERM /THROUGH TODAY/...
High pressure moves east of New England through the day,
bringing a freshening southerly flow on it`s western periphery.
This brings warming conditions into most of New Hampshire and
interior western Maine as highs warm into the low to mid 70s.
Closer to the coast and into central Maine, the southerly flow
brings cooler air off the water by the afternoon hours, holding
highs to the upper 50s along the immediate coastline to the mid
60s through central Maine.

A weak trough riding around the northeastern periphery of a
ridge centered from the Great Lakes to Hudson Bay moves through
northern and eastern locations during the day today. This brings
thickening cloud cover, and the chance for a few showers or
sprinkles. The clouds also keeps temps down for the day, with
highs likely topping out in the mid to upper 50s for most of
northwestern Maine and northern Coos county.

&&

.SHORT TERM /TONIGHT THROUGH 6 PM TUESDAY/...
High clouds from a cut off low across the southern US filter in
through the overnight hours tonight, helping to keep highs
warmer than this past night. Lows likely only drop to around 50
across central and southern New Hampshire before the thickening
clouds end the cooling. With the clouds arriving later through
the night further north and east, lows cool into the 40s across
most of Maine and northern New Hampshire, with some upper 30s
possible through central Somerset county. Other than watching
clouds and temps, a quiet night is expected tonight.

The elongated ridge of high pressure to the east of New England
becomes reinforced through the day on Tuesday as a fresh high
pressure center builds southward from northeastern Quebec. This
building high brings a freshening northeasterly wind shifting to
east through the day tomorrow. This set up brings in cooler air
through the daytime tomorrow along the coast, where
temperatures likely spend most of the day in the 50s. With
filtered sunshine, temps steadily moderate further inland and to
the west, with highs around 70 through the Lakes Regions of
Maine and New Hampshire, and the mid 70s through the Connecticut
River Valley.


&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Long Term Update...Little change to the long term with the
incorporation of the 01z NBM. Fair weather will give way to
potentially unsettled weather at the end of the week into the
weekend.

Previously...

The long term period will start off with mid level ridging
centered over southeast Canada with a closed low over the
southeast. The ridge will likely maintain dry conditions into
Wednesday with humidity starting to increase as the closed low
migrates northeastward. The closed low will transition to an
open wave as it crosses southern New England Thursday and
Friday. This will bring more moisture into the region, while
organized forcing for ascent will be lacking. Chances for
showers will increase Thursday with additional chances for
showers and perhaps some thunderstorms Friday. As the open wave
moves offshore Friday another closed low will be approaching
from the the Great Lakes region. This system will keep chances
for showers in the forecast through next weekend. While there
are chances for showers every day Thursday through the end of
the period, no one day looks to be a washout with extended dry
periods possible. High temperatures will generally climb into
the 70s each day across the interior with onshore winds keeping
coastal areas in the 60s. The uptick in humidity will likely
become noticeable Thursday and Friday when dew points approach
the low to mid 60s.

&&

.AVIATION /07Z MONDAY THROUGH FRIDAY/...
Short Term...VFR conditions prevail at all terminals through
the day tomorrow.

Long Term...Mainly VFR Tuesday through Wednesday. Increasing
moisture during the second half of the week will bring chances
for night time fog and chances for showers with perhaps some
thunderstorms Friday.

&&

.MARINE...
Short Term...High pressure moves east of the waters today,
bringing a freshening southerly flow on its western periphery. A
few gusts to 25 kt are possible this afternoon. Winds shift to
northeasterly late tonight as a stronger high pressure center
builds southward into the Canadian Maritimes tomorrow.


Long Term...Winds and seas remain below SCA thresholds through
the period. High pressure east of the waters will maintain
persistent onshore flow.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...Frost Advisory until 6 AM EDT early this morning for
     MEZ012>014-018>022-026>028-033.
NH...Frost Advisory until 6 AM EDT early this morning for
     NHZ003>009-011-015.
MARINE...None.

&&

$$


NEAR TERM...Clair
SHORT TERM...Clair
LONG TERM...Ekster/Schroeter