National Weather Service Raw Text Product

367 
FXUS61 KGYX 270744
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
344 AM EDT Fri Jun 27 2025

.SYNOPSIS...
A warm front will lift northeast towards New England today bringing
increasing chances for showers tonight. Low pressure crosses 
Saturday, bringing periods of rain and some thunderstorms. Weak
high pressure builds in Sunday and Monday for mostly dry 
weather with increasing temperatures. Temperatures and humidity 
continue to rise Tuesday ahead of a cold front that will bring 
thunderstorms Tuesday afternoon into Tuesday night. Humidity 
will abate behind the front Wednesday as high pressure returns
to the Northeast.


&&

.NEAR TERM /THROUGH TODAY/...
High pressure moves through New England today and off to the 
east, bringing a mostly sunny first half of the day and an 
increasing onshore breeze. With the mainly sunny skies, 
temperatures warm into the low to mid 70s across most of the 
region. After an initial warmup to the low 70s, temps fall back 
into the 60s along the coast in the afternoon as winds shift to 
southeasterly with the passing high.

As the high moves through today, a warm front also makes 
progress through the Northeast, but likely stalls southwest of 
New England by late today. This brings increasing cloud cover 
during the afternoon hours from the west. While the front stalls
at the surface, warm air continues to move in aloft, with a 
shower possible across northwestern areas before sunset this 
evening 

&&

.SHORT TERM /TONIGHT THROUGH 6 PM SATURDAY/...
Moisture continues to move in aloft overnight, as a cooler low 
level marine airmass moves in at the surface from the east. A 
wave of low pressure approaches from the west during the 
overnight hours, with POPs increasing through the overnight. The
best forcing for rain looks to be across northern areas as 
moisture lifts over the cooler airmass. By morning, periods of 
rain and some scattered thunderstorms are likely across northern
locations, while more showery activity is expected further 
south.

This trend continues through much of the day tomorrow as 
periods of rain and showers move through the region along the 
stalled front. There remains some question as to whether or not 
the warm front at the surface will reach into Southern New 
Hampshire tomorrow afternoon. This would bring with it warmer 
temps, and also the potential for a few stronger storms in the 
late afternoon. Right now the cool air looks most likely to win 
out, with highs ranging from the upper 60s across southern New 
Hampshire, to the mid 50s across northern and central Maine.

Rainfall amounts are looking lighter south of the mountains 
with generally less than half an inch looking more likely for 
much of central and southern New Hampshire, as well as southwest
Maine. Northern areas stand the best chance to see more 
substantial rainfall totals, with 1-3" possible across the 
north from the repeated rounds of showers and thunderstorms. It 
remains to be seen exactly how far north the convection will 
initiate on the frontal boundary aloft, so this precip gradient 
is likely to still shift a bit going into the event. 

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
Long term update...01z NBM has been incorporated into the long 
term forecast. Improvement continues to be foreseen Saturday 
night and Sunday as low pressure moves away. Warmer weather is 
then expected with chances for showers and thunderstorms 
centered around Tuesday and Thursday.

Previously...

Chances for rain will diminish late Saturday into Sunday 
morning as the wave of low pressure moves offshore. Mostly fair 
weather is likely across much of the area by Sunday afternoon 
with highs climbing into the 70s. High pressure slides overhead 
Sunday night and offshore Monday. This will bring fair weather 
with temperatures into the 80s for highs. Humidity will also 
start to increase and will peak on Tuesday when dewpoints will 
make a run into the upper 60s to low 70s. These high dewpoints 
combined with surface heating will likely yield ample CAPE 
across the forecast area for thunderstorms that will become 
likely Tuesday afternoon as a cold front approaches. Latest 
Machine Learning guidance out of CSU is showing a decent signal 
for strong to severe storms with this cold front. This seems 
reasonable with global models suggesting a frontal passage near 
and just after peak heating and modest height falls aloft. 
Temperatures look to remain seasonably warm into the middle of 
next week while dewpoints drop in the wake of the front. 
Cyclonic flow aloft will linger keeping some chances for showers
in the forecast Wednesday and Thursday. 

&&

.AVIATION /07Z FRIDAY THROUGH TUESDAY/...
Short Term...Any valley fog at LEB, HIE, and CON clears by mid 
morning, with VFR prevailing today and most of tonight. Showers 
increase through the overnight from northwest to southeast, with
MVFR conditions possible at LEB and HIE by Saturday morning. 
MVFR ceilings likely spread eastward tomorrow morning, with IFR 
possible at all terminals by the early afternoon as periods of 
rain and showers move through into the evening.

Long Term...Low pressure crossing the area Saturday will likely
keep cigs near MVFR to IFR thresholds with periods of rain. 
Restrictions may linger through Saturday night before drier air 
moves in Sunday. VFR likely prevails Sunday into Tuesday. A cold
front will bring chances for thunderstorms Tuesday afternoon.

&&

.MARINE...
Short Term...High pressure slides east across the waters today,
with a warm front stalling south of the waters tonight. A weak 
low pressure system approaches from the west tonight, and slowly
crosses northern New England through the weekend. Conditions 
look to remain below SCA levels through Saturday.

Long Term...Low pressure approaches from the west Saturday and 
moves through the waters Saturday night. This will bring 
persistent onshore winds with gusts around 20 kts and seas 
climbing to 5-6 feet Saturday night into Sunday. High pressure 
slides over the waters Sunday night and Monday. South to 
southwest flow increases Tuesday ahead of a cold front.


&&

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

&&

$$


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