Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 250805 AFDGYX Area Forecast Discussion National Weather Service Gray ME 305 AM EST Sat Nov 25 2017 .SYNOPSIS...
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A cold front will approach from the west today and will cross the region tonight. A shallow ridge of high pressure will build in from the west on Sunday. A secondary cold front will drop south through the region Sunday night and Monday. High pressure will build in from the west Monday night and will shift east on Tuesday. A cold front will push east through the region Tuesday night. High pressure will build in from the west on Wednesday.
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&& .NEAR TERM /THROUGH TODAY/...
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After a mostly sunny start to the day... a cold front approaching from the west will bring increasing clouds in the afternoon. Not looking for a lot of forcing with this moisture starved boundary but a brief shower will be possible by late in the day with best pops across northern zones. Temperatures will top out well above normal in a warm southwest flow ahead of the front. Highs will range from the mid to upper 40s north and lower to mid 50s south.
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&& .SHORT TERM /TONIGHT THROUGH 6 PM SUNDAY/...
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Cold front will push offshore this evening and associated showers will push east of the region after midnight downwind of the mountains. There will be a continuing chance of showers in developing upslope flow in the north with rain showers transitioning to snow showers as colder air moves back into the region. Lows overnight will range through the 20s north and lower to mid 30s south. Upper trough will push in from the west on Sunday keeping skies mostly cloudy with a few scattered snow showers possible. Once again best chance of precip will be in the north. Temperatures will get back close to normal ranging through the 30s to near 40 in the south.
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&& .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
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Sunday night into Monday a short wave trough will be in the process of moving through northern New England. This fast moving system will result in increasing cloudiness and some light snow showers across northern sections. Cool air will be reinforced behind this system on Monday and Monday night with highs in the mid 20s to near 30 north and mid 30s to lower 40s south with moderate radiational cooling expected. For the remainder of the week warm weather- or at least temperatures closer to normal- will return as ridging crosses the northeast. Highs should clear the freezing mark each day north of the foothills, while farther south readings in the 40s to near 50 are expected through the work week. Lows will range from the teens to mid 20s north with mid 20s to mid 30s south. Late Tuesday short wave energy pivots well to our north. This will push a trailing cold front through and bring a few rain and snow showers to the international border region late Tuesday night into Wednesday. Downsloping will bring partly sunny skies to the coastal plain midday Wednesday with this trend extending to the mountains by the evening. Cloud cover increases Thursday and Friday as a deepening trough axis moves towards the east coast. This will be the next significant chance for precipitation across the CWA, with the system bringing rain and snow to much of the area, with p-type switching to snow during the overnight hours over the coastal plain.
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&& .AVIATION /08Z SATURDAY THROUGH WEDNESDAY/...
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Short Term...VFR today through Sunday with areas of MVFR ceilings in the mountains. Long Term...VFR all terminals but perhaps areas of MVFR ceilings in -SHSN for HIE Sunday night into Monday. Areas of MVFR or lower ceilings and visibilities for HIE and LEB Tuesday night into Wednesday...improving to VFR during the day.
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&& .MARINE...
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Short Term...Continuing SCAs through today with another period of SCA level winds possible in northwest flow on Sunday. Long Term...Tuesday night into Wednesday SW/W winds will approach strong SCA/near gales and seas increase to 5-8 ft with a frontal passage.
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&& .GYX WATCHES/WARNINGS/ADVISORIES...
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ME...None. NH...None. MARINE...Small Craft Advisory until 7 PM EST this evening for ANZ150>154.
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&& $$ Sinsabaugh/Hanes

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