Area Forecast Discussion
Issued by NWS Portland, ME

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363 FXUS61 KGYX 262249 AFDGYX Area Forecast Discussion National Weather Service Gray ME 649 PM EDT FRI AUG 26 2016 .SYNOPSIS... Cooler and drier air will filter in tonight behind a cold front. High pressure builds in out of Canada on Saturday with another warm day in the 70s and 80s. High pressure moves east on Sunday as another front approaches from the west. This front will cross the area Sunday night into Monday with another round of showers and possible thunderstorms. High pressure for Tuesday will be followed by a more significant cold front mid week next week. && .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
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645 pm update: Very quiet evening with Canadian high pressure building southeast into the area with clear skies and much lower dewpoints. Drier and cooler temperatures will be expected overnight. No changes needed at this time. Showers have ended across the forecast area as a cold front has shifted offshore. A rogue sprinkle will be possible in the mountains but chances are not enough to include in the forecast tonight. Most locations received less than a tenth of an inch but some of the heavier showers have measured around a third of an inch. Drier and cooler air will work in from the north overnight allowing temperatures to drop into the 50s and lower 60s. The coolest areas will be over northern Coos and Oxford counties and draining towards the Connecticut River valley with Canadian high pressure building in from the NW.
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&& .SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/... After morning fog dissipates expect a sunny and mild day for Saturday. Northerly winds will keep readings a tad cooler than they would have been otherwise...with temperatures ranging from the mid 70s north to mid 80s south. A sea breeze will develop by the late afternoon hours slowing heating right along the coast. Clouds will increase towards nightfall with short wave energy and an elevated warm front in the vicinity. Still not expecting enough moisture for showers to develop. Overnight lows will be similar to the previous night. && .LONG TERM /SUNDAY THROUGH FRIDAY/... A weak cold front will start to approach the area from the west on Sunday bringing an increase in cloudiness during the day. The front will cross the area Sunday night or Monday. The greatest chance for any significant rain will be in the mountains. Depending on timing, southern areas could see a thunderstorm Monday afternoon if the front is slow to move through the area during the day. High pressure will build in behind the front for Tuesday into Wednesday. Another approaching front will bring another threat of showers for Tuesday night or Wednesday. Cooler and more seasonable air will follow the front for late next week. Models are not in good agreement on exact timing of fronts...especially for mid week next week. ECMWF stalls the front until Thursday allowing more moisture to stream northeastward along the front. This could delay the cooler air until late Thursday or Friday. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Short Term...VFR conditions will prevail tonight into Saturday as a cold front and associated rain has moved offshore. Fog...some locally dense...will develop overnight in valleys. This may bring a few hours of LIFR to HIE and LEB in particular. Long Term...Mainly VFR conditions expected through the period with MVFR to IFR conditions possible in showers Sunday night into Monday. && .MARINE... Short Term...Southwest winds will shift to the north by Saturday morning. Waves will remain around 2-3 ft. There may be some marine fog overnight. Long Term...Winds and seas are expected to be below SCA criteria through Tuesday. SCAs are possible Wednesday. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...None. NH...None. MARINE...None. && $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.