Area Forecast Discussion
Issued by NWS Caribou, ME

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS61 KCAR 270939
AFDCAR

Area Forecast Discussion
National Weather Service Caribou ME
539 AM EDT Tue Jul 27 2021

.SYNOPSIS...
A cold front will slowly move off the coast today into tonight.
High pressure will cross the region Wednesday, then exit across
the Maritimes Thursday. Low pressure will cross the region
Thursday night through Friday, then exit across the Maritimes
Saturday.
&&

.NEAR TERM /THROUGH TONIGHT/...
A cold front will reach the coast early this morning as high
pressure building into Quebec pushes some cooler and drier air
into the region. This will bring a clear to partly cloudy day
with highs a few degrees below normal though some fog may
linger along the coast early this morning. A weather disturbance
rounding the bottom of the eastern Canadian trough will slide
into western New England this evening then continue east into
the Gulf of Maine tonight. The NAM is a bit more aggressive
with this shortwave than the GFS with the NAM bringing a
significant area of showers across the Downeast region overnight
but the GFS barely brushing Downeast with some showers. The NAM
is likely overdone but will increase the chances for showers
Downeast with the GFS now a bit closer to the coast with this
wave. The shortwave will continue east late tonight as the cold
front pushes further off the coast. This will allow clearing
from north to south and a chilly night as high pressure
continues to build in from Quebec.
&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
High pressure will build across the region Wednesday, while a
cold front moves south across the Gulf of Maine. Could have a
chance of showers early Wednesday along the Downeast coast with
the exiting front. Otherwise, expect partly/mostly sunny skies
with building high pressure. High pressure crosses the region
Wednesday night through early Thursday, then exits across the
Maritimes later Thursday while low pressure begins to approach
from the west. Expect mostly clear skies across the region
Wednesday night through early Thursday. Clouds then increase
later Thursday, along with a chance of showers, in advance of
the approaching low. The low begins to cross the region Thursday
night with rain and a chance of thunderstorms. Temperatures
will be at slightly below normal levels Wednesday/Thursday.
&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
The surface low will cross the region Friday with rain and a
chance of thunderstorms, while an upper low crosses northern
Maine. The rain will taper to showers later Friday through early
Friday night in the wake of the exiting surface low. A chance
of showers will persist through Friday night across northern
areas with the upper low. The upper low will exit across the
Maritimes Saturday. However, a disturbance rotating around the
upper low will cross the region. Cool air aloft with the exiting
upper low will support steep lapse rates Saturday. The steep
lapse rates, diurnal heating and the upper disturbance will
support a chance of showers and thunderstorms Saturday. The
better shower and thunderstorm chances will occur across the
north and mountains, with lesser chances Downeast. Low pressure
will draw a cold front across the region later Sunday into
Monday, though timing differences still exist. Expect a chance
of showers and thunderstorms across the region Sunday into
Monday. Temperatures will remain at below normal levels Friday
through Monday.
&&

.AVIATION /09Z TUESDAY THROUGH SATURDAY/...
NEAR TERM: IFR to MVFR conditions are possible early this
morning in fog and mist along the coast. Otherwise, VFR
conditions are expected across the area today and tonight. Winds
will be SW becoming NW along the coast and NW elsewhere today
then NW to N tonight.

SHORT TERM:
Wednesday through Wednesday night...VFR. Northwest winds 10 to
15 knots with gusts up to around 20 knots Wednesday. Variable
winds 5 to 10 knots Wednesday night.

Thursday...VFR early, then VFR/MVFR with a chance of showers.
South/southwest winds 10 to 15 knots with gusts up to around 20
knots.

Thursday night...Variable conditions with showers and
thunderstorms. South/southeast winds 10 to 15 knots with gusts
up to around 20 knots.

Friday...Variable conditions with showers and thunderstorms.
Variable winds around 10 knots, becoming west/northwest 10 to 15
knots.

Friday night...IFR/LIFR early, then VFR/MVFR. Rain tapering to
showers. West/northwest winds 10 to 15 knots.

Saturday...Variable conditions with any showers/thunderstorms,
mostly across the north and mountains. Otherwise, VFR.
West/northwest winds 10 to 15 knots with gusts up to around 20
knots.
&&

.MARINE...
NEAR TERM: Wind and seas will be below SCA today and tonight.
Some fog will likely limit visibilities today with humid air
over the waters. Showers are likely tonight with drier air
bringing an improvement of visibilities late tonight.

SHORT TERM: Winds/seas will remain below small craft advisory
levels Wednesday through Thursday night. Will have a chance of
showers early Wednesday, then again Thursday afternoon. Rain,
along with a chance of thunderstorms and patchy fog, is
expected Thursday night.
&&

.CAR WATCHES/WARNINGS/ADVISORIES...
ME...None.
MARINE...None.

&&

$$

Near Term...Bloomer
Short Term...Norcross
Long Term...Norcross
Aviation...Bloomer/Norcross
Marine...Bloomer/Norcross


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.