Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 171119 AFDGYX Area Forecast Discussion National Weather Service Gray ME 619 AM EST Fri Feb 17 2017 .SYNOPSIS... High pressure will build in from the west today and will crest over the region tonight as a warm front lifts into the northeast. The warm front will quickly be followed by a cold front on Saturday afternoon. A secondary cold front will slowly approach from the north Sunday and will drop south through the region Sunday night. High pressure will build in from the west on Monday and will crest over the area on Tuesday. High pressure will shift offshore Tuesday night as a warm front pushes in from the west. The warm front will push east of the region on Wednesday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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620 AM Update...Very little change to the going forecast. Upslope clouds will continue in the mountains but snow shower activity continues to diminish. Otherwise, the main weather issue today will be northwest winds gusting 25 to at times 30 mph. Previously... A quiet day is in store for the region relative to the weather over the last two weeks. A short wave trough will depart the region early this morning, ending the mountain snow showers early on. Otherwise, we expect mostly sunny skies for much of the coastal plain today with some strato-cu remaining in the northern Whites. With strong low pressure remaining over the Maritimes today, northwest flow will be gusty, perhaps up to 30 mph at times.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/... Surface high pressure will crest over northern New England tonight. However, some warm air advection cloudiness will advect overhead. This won`t allow temperatures to bottom out to their potential overnight. However, it is expected to remain dry. Low level warm air advection will begin in earnest on Saturday allowing temperatures to rise well into the 40s, if not a few 50 degree readings in the far south. Therefore, some snowmelt is expected. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... Weak cold front will push offshore Saturday evening. Increasing downslope flow will clear any clouds downwind of the mountains. Looking for variable clouds in the north. Lows will range from the upper 20s to lower 30s north and lower to mid 30s south. Secondary cold front will approach from the north on Sunday bringing increasing clouds to northern zones in the afternoon along with a chance of snow showers. Farther south expect mostly sunny skies giving way to late day clouds. Highs will range from the mid 30s north to the mid 40s south. Cold front will drop south through the region Sunday night. Looking for variable clouds in the south to give way to clearing skies as the front passes. Clouds and scattered snow showers will clear after midnight in the north. Lows will range through the 20s. High pressure will build in from the west on Monday producing mostly sunny skies. Highs will generally range through the 30s to near 40. High pressure will crest over the area Monday night. Lows will range through the teens. A weak warm front will approach from the west on Tuesday as high pressure shifts offshore. After a mostly sunny start to the day... high clouds will be on the increase during the afternoon. High temperatures will range through the 30s. Warm front will push in from the west Tuesday night. Models keep any associated precip west of the area overnight but timing of this feature will have to be watched for possibly spotty freezing rain overnight...mainly in western zones. Lows overnight will range from the mid teens to mid 20s. Warm front will push east of the region on Wednesday with morning clouds giving way to clearing skies in the afternoon. Highs will range from the mid 30s to mid 40s. Another weak cold front will approach from the northwest on Thursday and will gradually sag south through the region by late in the day. Aside from a few sprinkles or flurries in the mountains...expect a dry fropa with just variable clouds. High pressure will build in behind this boundary for the end of the week. && .AVIATION /11Z FRIDAY THROUGH TUESDAY/... Short Term...VFR conditions are expected outside of the White Mountains today through Saturday. SFC wind gusts may approach 25 kt during the day today before rapidly diminishing this evening. Long Term...VFR Saturday night. VFR Sunday with areas of MVFR ceilings in the mountains in the afternoon. VFR Monday and Tuesday. && .MARINE... Short Term...SCA`s remain up on the ocean waters as well as Penobscot bay through this evening. Winds will diminish on Casco bay this morning but still occasionally gust around 25 kt during the day today. SCA conditions may once again develop later Saturday afternoon. Long Term...Sca`s may be needed Saturday night through Sunday night. && .GYX WATCHES/WARNINGS/ADVISORIES...
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ME...None. NH...None. MARINE...Small Craft Advisory until 3 PM EST this afternoon for ANZ153. Small Craft Advisory until midnight EST tonight for ANZ150>152- 154.
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