


Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
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791 FXUS61 KCAR 271922 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 322 PM EDT Fri Jun 27 2025 .SYNOPSIS... Low pressure approaches tonight through Saturday, then moves east later Saturday night and Sunday. High pressure builds in Sunday night and Monday. A cold front approaches Monday night and then moves east across the region and later Tuesday. Another system approaches Wednesday. && .NEAR TERM /THROUGH SATURDAY/... Surface high pressure continues to slide east, out into the open waters of the atlantic, to the south of Nova Scotia tonight. Meanwhile, low pressure north of the Great Lakes region will slowly move east with increasing clouds this evening. Moisture will slowly increase overnight in the southerly flow between the approaching low and the high to the east. Some light rain begins to move into western areas after midnight. Rain will continue at times on Saturday. The best chances for rain will be across central and downeast portions of the forecast area. There is more uncertainty with regard to the rainfall forecast across the far north, especially the St. John Valley, where the rain could be more spotty through Saturday morning. The clouds, southerly flow and rain, will result in Saturday afternoon`s high temperatures remaining generally in the mid to upper 50s across the region. && .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/... System will be occluding Saturday evening with isolated thunder over southern areas with elevated instability present while heaviest rain looks to be over srn and eastern zones. Triple point looks to develop overnight along the coast with patchy fog present over Downeast. How quickly dry air moves in behind boundary/sfc low will ultimately determine how quickly moisture works east. Lingering showers expected over the north and east Sunday afternoon before coming to an end in the evening. Given the lingering moisture and cloud cover temps looks to be below normal for Sunday with highs in the m60s over the north and lwr 70s in the south. Brief high pressure builds in Sunday night into Monday afternoon with clearing skies expected. Minimal cold advection likely Sunday night with temps only dropping into the 50s at all locations. sunny skies and warm air advection on Monday will result in temps climbing back to above normal, around 80F over the north and in the lower 80s for interior Downeast. Onshore flow keeps the coast and outer islands on the cool side, only in the 60s. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... Ridge will be breaking down Monday night with chc for showers acrs the north overnight. Cannot rule out patchy fog over southern areas Monday night with showers affecting areas to the north of Katahdin. By Tuesday morning cold front will be on our doorstep and with instability increasing as pw values increase to near 2.00 inches, cannot rule out chances for storms in the afternoon. With 0-6km shear approaching 40kts cannot rule out isolated severe storms on Tuesday. Cold front moves through Tuesday night but secondary front looks to bring chillier air in for the end of the week. Bermuda High looks to break down leading to upper trof keeping s/wvs tracking over the area with chances for showers off and on through the end of the week. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... NEAR TERM: KFVE...VFR through 09Z, then MVFR or lower through Sat in periods of rain. S to SE wind 5 to 10 kt with G20kt Sat afternoon. KCAR...VFR through 11Z, then MVFR or lower through Sat in rain. S to SE wind 5 to 10 kt with G20kt Sat afternoon. KPQI...VFR through 11Z, then MVFR or lower through Sat in rain. S to SE wind 5 to 10 kt with G20kt Sat afternoon. KHUL...VFR through 10Z, then MVFR or lower through Sat in rain. S to SE wind 5 to 10 kt with G20kt Sat afternoon. KBGR...VFR through 11Z, then MVFR or lower through Sat in rain. S to SE wind 5 to 10 kt with G20kt Sat afternoon. KBHB...VFR through 11Z, then IFR in rain and patchy fog, possible LIFR aft 18Z. S wind 5 to 10 kt. SHORT TERM: Saturday night-Sunday...MVFR/IFR in rain and fog, mainly for HUL, BGR and BHB. SE 5-10kts Saturday night becoming N Sunday evening. Sunday night-Monday...Mainly VFR. IFR fog possible over Downeast terminals and valley terminals Monday morning. Cannot rule out MVFR in TSTMS nrn Aroostook terminals in the afternoon. Light W winds becoming SW 5-10kts. Monday night-Tuesday...MVFR/IFR in TSTMS Monday evening and Tuesday. SSW 5kts becoming 5-15kts Tuesday afternoon. Tuesday night-Wednesday..VFR/MVFR. SW 5-10kts becoming W 5-15kts gusting to 20kts. && .MARINE... NEAR TERM: Winds/seas will remain below SCA levels through Saturday. SHORT TERM: Winds and seas will be marginal Saturday night then diminishing on Sunday. Waters will be headline-free through Tuesday morning before south winds increase toward marginal small craft conditions. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...Beach Hazards Statement until 8 PM EDT this evening for MEZ029- 030. MARINE...None. && $$ Near Term...TWD Short Term...Buster Long Term...Buster Aviation...TWD/Buster Marine...TWD/Buster