Area Forecast Discussion
Issued by NWS Caribou, ME

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000 FXUS61 KCAR 141630 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 1130 AM EST Thu Dec 14 2017 .SYNOPSIS... A deep low over Labrador will lift north to the Davis Strait tonight. Low pressure will pass south of the region today. High pressure will build to the south of the region tonight and Friday. Weak low pressure will cross the area Friday night. && .NEAR TERM /THROUGH TONIGHT/...
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11:30 AM Update...High clouds over eastern areas are moving away. Elsehwere, skies are partly cloudy with some very light flurries over the north and a cold west wind. Forecast remains on track. Previous discussion... Deep low pressure over Labrador will lift to the Davis Strait tonight. An upper low will also lift north today with some cyclonic flow aloft around the low into northern Maine. There will be a cold air mass across the region today with 925H temps in the negative teens (C), and there will continue to be a gusty wind with a fairly strong pressure gradient and steep lapse rates in the lowest few thousand ft agl. High will range from 5 to 10 above across the North Woods and Saint John Valley to around 20 degrees in the Greater Bangor Region. Cloud cover likely to be a bit of a challenge today, especially in the north with the cyclonic flow and model soundings showing a fair amount of moisture just above the well mixed layer. Would expect that at times that it is cloudy, but that at times the clouds thin out with partial sunshine. Would not expect more than a few flurries and perhaps an isolated snow shower in the Saint John Valley and Mountains. Downeast there will be more in the way of sunshine. Tonight the sky should become p/cloudy in the north and clear across the Downeast Region. Temperatures will be cold with lows around or a little below zero in the north with single digits Downeast. Wind chills of 10 to 20 below are expected early this morning and again late tonight across the northern half of the CWA, and from 10 below to zero in the south. Blowing snow may limit the visibility at times today across the northern zones. The wind chills and blowing snow were mentioned in the hazardous weather outlook.
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&& .SHORT TERM /FRIDAY THROUGH SATURDAY/... A mainly sunny and cold day is in store for the region Friday as high pressure begins to ridge up from the south. Highs on Friday will be at well below normal levels. Expect highs to range from the low to mid teens north and upper teens to lower 20s down east. Friday night will feature increasing clouds in advance of an approaching upper and surface trof from the northwest. Lows will range from zero to 5 below north and 5 to 10 above central and down east. Interesting set up being hinted at later Friday night and Saturday in the form of a potential inverted trof extending back toward the coast and southwest Maine. Have went with slgt chance pops for snow showers (15 to 20%) regionwide, except for the immediate coast where showed low chance pops (30%) later Friday night into Saturday. Temperatures Saturday will continue below normal for this time of year. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... Saturday night through Sunday night will be dry with below normal temperatures. Beyond that the forecast becomes a bit more uncertain. A series of short waves will track toward the region early to mid week. These features could bring some snow showers or light snow to the region from early to mid week, although at this time, it doesn`t appear as in any big storms will affect the region through the period. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... NEAR TERM: Conditions will vary from high end MVFR to low end VFR at the northern terminals today. Conditions are expected to be VFR tonight at the northern terminals. VFR today and tonight at KBGR and KBHB. SHORT TERM: Mainly VFR conditions expected outside of any snow shower activity and briefly lower conditions. && .MARINE... NEAR TERM: A small craft advisory is in effect through tonight. There might be a few gusts to 35 knots early this morning and again tonight, but widespread gale conditions are not expected. SHORT TERM: Small craft advisory conditions may persist through early Friday. Winds/seas may then once again increase to small craft levels Saturday and Saturday night. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...Small Craft Advisory until 10 AM EST Friday for ANZ050>052. && $$ Near Term...CB Short Term...Duda Long Term...Duda Aviation...CB/Duda Marine...CB/Duda is the U.S. government's official web portal to all federal, state and local government web resources and services.