Area Forecast Discussion
Issued by NWS Caribou, ME

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131 FXUS61 KCAR 162044 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 344 PM EST Thu Jan 16 2025 .SYNOPSIS...
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A weak trough of low pressure crosses the region tonight followed by high pressure on Friday. A cold front passes through the region Saturday night and a low passes to our south Sunday night before high pressure returns early next week.
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&& .NEAR TERM /THROUGH FRIDAY/...
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Late afternoon visible satellite imagery and observations continue to show low cloud deck across northern portion of the forecast area along with occasional flurries. Elsewhere, it has become mainly clear to partly cloudy. A mid level wave will cross the region overnight. At the surface, the pressure pattern remains weak. Expect skies to remain mainly cloudy overnight as the wave crosses the region. The cloud cover should once again keep temperatures from falling all that much overnight despite the light wind. A weak trough of low pressure will cross the Gulf of Maine later tonight through early Friday with any snow shower activity remaining mainly offshore. The mid level trough pushes east early Friday with a return to ridging both at the surface an aloft. Afternoon highs range from the low to mid 20s with partly sunny skies. Winds will remain light.
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&& .SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
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An upper-level trough moves in Friday night across Quebec with an attendant surface low that moves north of the region. The cold front associated with the low will pass through the region Saturday night bringing a chance for rain Downeast and snow farther north. Despite some of the output from the global models which wanted to bring the rain into northern Aroostook county the surface temperatures barely above freezing combined with the shallow warm layer did not support this idea. Instead, kept the rain/snow line farther south near the cities of Dover-Foxcroft, Millinocket, and Houlton. Winds will be picking up during the day on Saturday, increasing into the evening as southerly flow drives the warm air advection for this event. Winds are expected to be in the 10-15 mph range with some gusts up to 25 mph or locally stronger where mixing can effectively bring down winds aloft. The cold front exits the area Sunday morning with some potential for clearing behind the boundary. Temperatures will start off warm and near freezing, gradually decreasing as cold air works its way in to the region.
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&& .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
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There is a growing possibility of a weak noreaster passing us to the south Sunday evening which could bring some light snow to the region. Ensemble solutions are coming into better agreement on the existence of a storm but are still expressing considerable uncertainty in the timing and location of it. This still looks to be a relatively weak event and major impacts are not expected at this time. High pressure starts to work its way back in to the region Monday night and with it the potential for very cold temperatures on Tuesday and Wednesday where low temperatures could get well below 0 and may not exceed 0 during the day, especially towards the north. Some light wind Tuesday may make the air feel even colder.
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&& .AVIATION /20Z THURSDAY THROUGH TUESDAY/...
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NEAR TERM: VFR/MVFR at the Aroostook terminals and VFR for KBGR/KBHB through Friday. Light wind through the period. SHORT TERM: VFR Friday night into Saturday morning, becoming MVFR in the afternoon along with light winds. Winds increase to 10-20 kts with 25-30 kt gusts Saturday afternoon through Sunday morning. IFR Saturday night and MVFR Sunday morning. MVFR and IFR possible Sunday evening into early Monday for Downeast terminals. VFR elsewhere. VFR Monday night through Tuesday with winds WNW 5 to 15 kts.
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&& .MARINE...
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NEAR TERM: Winds/seas will remain below SCA levels through Friday. Seas will generally be around a 1 foot. SHORT TERM: Winds/seas increase to SCA levels through Saturday, becoming 20-30 mph with seas 6 to 8 ft. Gales possible Saturday afternoon and evening. Seas decrease to 4 to 6 ft during the day on Sunday with winds 15 to 20 mph, continuing at SCA levels through the end of the period.
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&& .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ Near Term...TWD Short Term...Melanson Long Term...Melanson Aviation...TWD/Melanson Marine...TWD/Melanson