Harts Location, New Hampshire Weather Forecast Discussion

455
FXUS61 KGYX 190604
AFDGYX
Area Forecast Discussion
National Weather Service Gray ME
204 AM EDT Fri Sep 19 2025
.SYNOPSIS...
Dry and breezy conditions will prevail today behind a cold front.
High pressure follows for the weekend, bringing a fresh cool
and dry airmass to New England. Light showers are possible for
the first part of next week but otherwise mainly dry conditions
are expected to persist.
&&
.NEAR TERM /THROUGH TODAY/...
A sfc cold front is currently crossing the area from the north
early this Friday morning. As expected, this front is bringing
little in the way of precipitation with just a few light
showers/sprinkles being observed via webcams across the far
north. Nighttime microphysics satellite imagery shows some low
stratus across portions of the ME coast, mainly east of
Portland. There is also cloud cover located across the north and
mtns in association with the aforementioned cold front. Some fog
has developed across portions of the region and this will
continue to be possible through daybreak. Current temperatures
are primarily into the 50s to lower 60s and some additional
cooling is possible.
The cold front will move east of the area later this morning,
leaving behind a dry and Fall like airmass in its wake. Skies
will become mainly sunny areawide by early this afternoon with
CAA northerly winds developing with increased afternoon mixing.
North-northwesterly wind gusts up to around 25 mph are possible.
These winds will allow the coast and southern areas to be the
warmest today with highs into the middle to upper 70s while more
northern areas remain into the 60s and lower 70s. These dry and
breezy conditions will result in elevated fire wx concerns, with
more information available in the fire wx section below.
&&
.SHORT TERM /TONIGHT THROUGH 6 PM SATURDAY/...
Sfc high pressure currently over Hudson Bay will begin to drift
southeastward tonight, allowing for a clear and calm night
across the region. These clear skies, light winds, and low soil
moisture from the ongoing drought will allow for strong
radiational cooling conditions. As a result, used mostly MOS
guidance, which brings low temperatures into the upper 20s/lower
30s across the north with middle to upper 30s across the
foothills and interior valleys, and then 40s in most other
locations. Went ahead and upgraded the freeze watch to a freeze
warning across the north and then issued a frost advisory for 1
tier of zones south of the freeze warnings. Some patchy frost is
possible across the normally colder spots outside of the
advisory but believe it will be isolated enough to not warrant
an advisory.
High pressure will remain in control on Saturday, allowing for
pleasant weather conditions. High temperatures will be mainly
into the 60s to near 70 degrees from north to south under sunny
skies.
&&
.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
We will kick the long term period off in northwest flow aloft with a
ridge axis to our west and broad low amplitude troughing to our
east over the Atlantic. At the surface, a ~1030mb high will lead to
dry and cold conditions overnight. A mostly clear sky and light
winds will be promising for radiational cooling and we should see
widespread lows in the 30s, with the exception of some 40s along the
coast and some mid to upper 20s over the northern valleys.
Widespread frost/freeze conditions will be possible Saturday night
into Sunday morning so headlines will likely be needed again.
The high will be slow to depart into the Gulf of Maine Sunday,
but gradual return flow rebounds temperature into the upper 60s
to around 70 for highs. Warmer overnight temps could limit frost
mention to portions of the mountains/valleys for Sunday night.
Temperatures continue to warm for the first half of the week.
During this time, a broad ribbon of unsettled weather will
slowly track through the forecast area. While Monday remains
dry, some showers may be approaching the mountains by the
evening. A lot of this development will be brought into Tuesday
as a weak warm front lifts through New England. NBM
probabilities of seeing greater than a quarter-inch of rainfall
are slim at around 20 percent before a cold front slides through
during the Wed/Thurs timeframe.
&&
.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
Short Term...Pockets of IFR-LIFR restrictions will remain
possible through around 12Z this morning due to low
ceilings/FG... mainly at KRKD and KLEB. VFR conditions will then
prevail today with N-NW wind gusts approaching 20 kts by this
afternoon. Winds will become light and variable tonight. Valley
FG will be possible, resulting in localized restrictions. VFR
then prevails on Saturday with W flow at 5-15 kts. No LLWS is
anticipated through the period.
Long Term... Next chance for lower ceilings may not be until
early next week when SHRA move across the forecast area.
&&
.MARINE...
Short Term...Winds will become N-NW today behind a cold front
with perhaps a few gusts this afternoon approaching 25 kts with
seas of 2-4 ft. Winds and seas relax tonight before winds become
westerly on Saturday at 5-15 kts with seas of 2-3 ft.
Long Term...High pressure moves over the waters Saturday night
into Sunday. Light return flow won`t pick up until the high is
further over the Gulf of Maine Sunday afternoon. Would expect a
lull in wave heights when the high is overhead, generally 1 to 2
ft, with waves increasing again Sunday evening and Monday 3 to 4
ft.
&&
.FIRE WEATHER...
Post frontal northwesterly winds may gust up to around 25 mph
today, which combined with relative humidity values dropping
into the 30 to 40 percent range, possibly lower than 30 percent
in some areas, will make for elevated fire weather concerns.
Saturday will be less breezy but much drier as an Arctic
originating airmass builds into the region. Relative humidity
values are expected to drop into the 20-30 percent range which,
despite light winds, will continue elevated fire weather
concerns, especially if fuels are readily available.
&&
.GYX WATCHES/WARNINGS/ADVISORIES...
ME...Freeze Warning from 2 AM to 8 AM EDT Saturday for MEZ007>009.
     Frost Advisory from 2 AM to 8 AM EDT Saturday for MEZ012>014-
     033.
NH...Freeze Warning from 2 AM to 8 AM EDT Saturday for NHZ001-002.
     Frost Advisory from 2 AM to 8 AM EDT Saturday for NHZ003-004.
MARINE...None.
&&
$$
NEAR TERM...Tubbs
SHORT TERM...Tubbs
LONG TERM...Cornwell/Hargrove
AVIATION...Hargrove/Tubbs
MARINE...Hargrove/Tubbs

NWS GYX Office Area Forecast Discussion