Area Forecast Discussion
Issued by NWS Caribou, ME

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565 FXUS61 KCAR 240039 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 839 PM EDT Sun Apr 23 2017 .SYNOPSIS...
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A cold front will cross the region overnight. High pressure will build across the region Monday. Low pressure will approach from the southwest Monday night into Tuesday then slide south of the area Tuesday night into Wednesday.
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&& .NEAR TERM /THROUGH MONDAY/...
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Update... A cold front will cross the region overnight. The front will bring isolated to scattered showers across northern areas into the early morning hours. Precipitation will be mostly in the form of rain, though a little snow could mix with the rain late before the showers end with little or no snow accumulation. Otherwise, expect partly to mostly cloudy skies across northern areas overnight, with mostly clear to partly cloudy skies Downeast. Could also have patchy fog Downeast in advance of the front late tonight. Overnight low temperatures will range from the upper 20s to lower 30s north, to the mid to upper 30s Downeast. Have updated the forecast to adjust for current conditions along with overnight temperatures, clouds and shower chances. Previous Discussion... Clouds are likely to clear behind the front Monday, with breezy NW winds and highs 5 to 10 degrees below normal.
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&& .SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/... High pressure to our north will bring a mostly clear and cold night Monday night with lows ranging from the low 20s north to upper 30s Downeast. Clouds will then increase Tuesday night ahead of low pressure lifting north from the Southeastern states. This low is a large but weak system with deeply stacked low pressure, but no strong cold intrusion for support. The low will weaken as it moves north. Rain will move onto the Downeast coast on Tuesday then reach northern areas Tuesday night. Rain will continue into Wednesday. The rain will push east Wednesday afternoon as some mid level drying lifts into our area ahead of a large frontal system approaching form the Plains. Rain amounts will range from over an inch Downeast to a quarter to a half inch across the north. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... Wednesday night will remain mostly cloudy as low clouds linger across the area and warmer air begins to move in aloft. Warmer air will surge north across the area on Thursday. However, with a southerly wind off the water, much of the warm air will likely remain aloft with only moderate warming at the surface. Clouds will give way to come breaks of sunshine Thursday afternoon. Thursday night will be mild as a warm southerly breeze continues ahead of an approaching cold front. The front will move through Friday, possibly with some showers. High pressure should then bring sunny and seasonable weather for Saturday. A ridge will be building along the east coast late in the weekend. Moisture topping the ridging and tracking along a frontal boundary will then bring increasing clouds on Sunday with a chance for some rain. && .AVIATION /00Z MONDAY THROUGH FRIDAY/...
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NEAR TERM: Occasional MVFR conditions are expected across northern areas later this evening into the early morning hours with a cold front and showers. VFR conditions are then expected to develop again late tonight and persist Monday. Generally expect VFR conditions Bangor and Downeast tonight through Monday. However, occasional MVFR/IFR conditions with any patchy fog are possible late tonight in advance of a cold front. SHORT TERM: VFR conditions are expected Monday night into Tuesday. Conditions may lower to MVFR in lower clouds Downeast Tuesday afternoon. Conditions will then lower to IFR from south to north in low clouds, fog and rain Tuesday night and remain IFR on Wednesday. Conditions will likely improve to MVFR Thursday morning as clouds lift, and possibly reach VFR Thursday afternoon.
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&& .MARINE...
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NEAR TERM: Winds/seas are expected to remain below small craft advisory levels tonight through Monday. Visibilities could be reduced in any patchy fog late tonight into Monday morning in advance of a cold front. SHORT TERM: A SCA will be needed Tuesday night into Wednesday for southerly winds up to 30 kt. Seas may reach 10 to 12 ft by late Wednesday in response to the southerly winds. The wind should diminish Wednesday night into Thursday allowing seas to subside.
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&& .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ Near Term...Norcross/Kredensor Short Term...Bloomer Long Term...Bloomer Aviation...Norcross/Bloomer Marine...Norcross/Bloomer

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