Area Forecast Discussion
Issued by NWS Portland, ME

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700 FXUS61 KGYX 221337 AFDGYX Area Forecast Discussion National Weather Service Gray ME 937 AM EDT Fri Jun 22 2018 .SYNOPSIS... High pressure will continue to build into the region today with fair weather expected. Low pressure approaches from the southwest early on Saturday with the potential for showers which will continue into Monday. High pressure then builds in later Monday, bringing dry conditions into midweek next week along with a moderating trend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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930am update.. Minor adjustments with temperatures warming more quickly under sunny skies. Prev Disc... Have updated the forecast based on current conditions and diurnal trends based on overnight lows last night. Some patchy fog occurred in northern Coos county with a couple locations reaching the mid 30s. Will continue with patchy frost and patchy fog in the forecast for the next hour, before the atmosphere mixes out. Otherwise, expect quiet conditions with a fair amount of sunshine today. Prev Disc... Some early morning patchy fog will quickly be followed by mainly sunny and dry conditions today. High pressure will crest over northern New England this morning before beginning to move east this afternoon. An onshore flow will develop today as the ridge moves east. The flow will be weak and generally light, nevertheless expect cooler readings right along the shoreline with highs mainly in the upper 60s to lower 70s. Further inland, temperatures will climb into the mid and upper 70s this afternoon. Sufficient sunshine, light enough winds with mild temperatures have triggered a high paddlecraft risk for today. Will highlight in products for today.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/...
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Clouds will be on the increase tonight. A baroclinic zone will move up the Mid Atlantic coastline while and upper level low also approaches from the northern Ohio Valley. There should be sufficient cloud cover to prevent patchy, inland valley fog from developing tonight. The cloud cover will also serve to keep reading a little warmer then last night, mainly in the 40s to lower 50s. Showers will then enter the region from southwest to northeast on Saturday as the upper level low approaches from the west and increased warm air advection occurs in the lower levels of the atmosphere. There is an outside risk for a thunderstorm, however the chance is small and with instability marginal, will not include in the forecast at this time. Cloud cover will prevent temperatures from climbing higher then the upper 60s to lower 70s.
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&& .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
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Cold front will gradually sag south into the region Saturday night and will stall over the region on Sunday. Looking for occasional showers as this boundary drops south but forcing will be rather limited and expect rainfall amounts will be on the light side. Lows overnight will only dip into the mid to upper 50s. The front will remain parked over the region on Sunday as a shortwave approaches from the northwest. This will spin up weak low pressure on the front by late in the day and will suppress this boundary in the south by evening. Looking for an increasing chance of showers as the day goes on and enough instability may develop in southern New Hampshire for afternoon or evening convection. Highs on Sunday will range from the upper 60s to upper 70s. Low pressure will move east through the Gulf of Maine Sunday night producing some beneficial rainfall across much of the forecast area. Most of the region will see one half to 1 inch of QPF with locally higher amounts in eastern zones. Lows overnight will range through the 50s. Showers will linger over the area through the first half of Monday as low pressure slowly pulls off to the east. Looking for clearing in the afternoon as high pressure builds in from the west. High temps will range from the mid 60s north to the mid 70s south. High pressure will continue to build in from the west Monday night and Tuesday...shifting offshore south of New England by late in the day. Looking for mostly clear skies Monday night with lows from the mid 40s to mid 50s. Tuesday will feature mostly sunny skies with highs in the mid 70s to lower 80s. High pressure will remain parked off the New England coast Tuesday night and will drift off to the southeast on Wednesday as a warm front approaches from the southwest. Lows Tuesday night will range through the 50s under mostly clear skies. High clouds will be on the increase on Wednesday but most of the areas should see a dry day with highs ranging through the 80s.
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&& .AVIATION /14Z FRIDAY THROUGH TUESDAY/... Short Term...Mainly VFR conditions today and tonight with localized MVFR conditions developing on Saturday in scattered showers. Long Term... Widespread IFR/LIFR ceilings Saturday night through Sunday night....improving to VFR on Monday. VFR Monday night through Tuesday. && .MARINE... Short Term...Winds and seas will remain below SCA thresholds today through Saturday. Long Term... No problems noted in the extended. && .GYX WATCHES/WARNINGS/ADVISORIES...
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ME...Beach Hazards Statement until 8 PM EDT this evening for MEZ023>028. NH...Beach Hazards Statement until 8 PM EDT this evening for NHZ014. MARINE...None.
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&& $$ SYNOPSIS... NEAR TERM...Curtis SHORT TERM... LONG TERM... AVIATION... MARINE...

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