Area Forecast Discussion
Issued by NWS Portland, 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
010
FXUS61 KGYX 281926 CCA
AFDGYX

Area Forecast Discussion...Added a Rip Current Mention
National Weather Service Gray ME
326 PM EDT SUN AUG 28 2016

.SYNOPSIS...
A cold front will approach Maine and New Hampshire tonight and
move off the coast early monday morning. High pressure will build
over the region Monday and move of the coast Tuesday. Another cold
front will cross the area Wednesday. Cool high pressure will
build in over the remainder of the week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Bona fide convection now moving into Vermont associated with a
frontal system. We have seen some echoes in our area but still
don`t think anything has reached the ground. However the
atmospheric column is apparently saturated enough across the far
north for rain to reach the ground. Dew points elsewhere are still
in the 50s with temperatures in the 70s and 80s.

PoPs are mainly confined to the higher terrain this afternoon and
overnight with a few sprinkles possible as far south as Lebanon
with the cold front. Also we may see something reach the mid
coast along the warm front...but in between there is not much
hope for measurable precipitation. Isolated to scattered
thunderstorms are possible as the better forcing arrives later
tonight into the overnight hours but no hazardous weather besides
lightning is expected. Storm total QPF values- where it does
rain- will range between 0.20" to 0.40".

The front moves offshore quickly tomorrow morning with clouds
disappearing quickly across the interior and coast. Across the
mountains some clouds will linger in upslope flow. Expecting gusty
winds up to 25 mph. Temperatures will warm into the 80s across the
south with locations closer to the Canadian border struggling to
get out of the 60s.

&&

.SHORT TERM /MONDAY THROUGH MONDAY NIGHT/...


&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
High pressure over the region Tuesday should provide a mostly
sunny day with comfortable humidities and high temperatures from
the mid 70s to lower 80s. As the high slips offshore Tuesday
night...a cold front will approach the area...and then cross the
area Wednesday. Like many recent frontal passages any showers and
possible thunderstorms will be scattered...with the greatest
chance for rain in the mountains.

A cool Canadian high pressure system will follow the front for
Thursday and Friday. An upper level trough will swing through the
area Friday. At this time, this feature looks dry...but it could
kick off a shower in the mountains.

Dry weather is currently expected over the holiday weekend with
temperatures gradually warming.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
Short Term...A cold front will approach from the west tonight.
Widely scattered SHRA or TSRA could lead to MVFR or lower
conditions...especially across the CT River Valley. SHRA or an
isolated TSRA will sweep across the forecast area with the
front...with areas of MVFR and maybe local IFR in heavier
convection. Dense fog and stratus is likely for AUG...LEB...and
HIE. Coastal fog and stratus are likely for the mid coast and
but should stay east of Portland. Gusty west winds around 20 kts
Monday will clear things back out to VFR...except at HIE where
upslope clouds may keep some near MVFR CIGs. Another round of fog
is expected Monday night into Tuesday morning with radiational
cooling allowing temperatures to drop close to dew points.

Long Term...
Mainly VFR conditions expected through the period except for MVFR
conditions possible in scattered showers and possible
thunderstorms Wednesday.

&&

.MARINE...
Short Term...Coastal fog/stratus will form by tonight. Seas and
winds increase tonight into tomorrow to 5-6 ft with a few wind
gusts to 25 kts. Waves will be a combination of swell from
Gaston and winds associated with a cold front.

Long Term...
Offshore seas will be near SCA criteria through Wednesday...then
expected to be below sca criteria Thursday and Friday.

&&

.TIDES...
THERE IS A MODERATE RIP CURRENT RISK TONIGHT AND MONDAY.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...Small Craft Advisory from 10 PM this evening to 8 AM EDT
     Tuesday for ANZ150>154.

&&

$$

NEAR TERM...Hanes
SHORT TERM...Hanes
LONG TERM...Jensenius



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