Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
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945 FXUS61 KCAR 261641 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 1241 PM EDT Thu Sep 26 2024 .SYNOPSIS... Low pressure will approach today, cross the area tonight, then exit across the Maritimes Friday. High pressure will build down from the north this weekend and remain over the area into early next week. && .NEAR TERM /THROUGH TONIGHT/... Update... Low pressure crossing Quebec province will draw an occluded front toward western portions of the forecast area later today. Aloft, the supporting upper low will also approach. Precipitable water values increase to around 1.50 inches today. Rain will occur across the region this afternoon. High temperatures today will range from the mid to upper 50s north, to the upper 50s to around 60 Downeast. Have updated mostly to adjust for current conditions. Previous Discussion... As the upper low tracks across Northern Maine tonight, some additional steady rain is possible across the north beneath the upper low. The air will not cool much tonight with the clouds and rain, with lows only in the low 50s. Downeast will just have some lingering light spotty showers overnight. && .SHORT TERM /FRIDAY THROUGH SATURDAY/... The low pressure system will continue to progress across the region on Friday. QPF models show the system intensifying as the center moves over the waters. Wrap around moisture should bring some rain showers across the north, then gradually dissipate by the evening. The cloud cover and N flow will bring temps into the low 60s in the north and mid 60s in the south. By Friday night, clouds should stick around with the wrap around moisture remaining in the area. This should keep temps in the low 50s for the night. Decided to include patchy fog across the area due to the recent rain and calm winds. If weak diurnal cooling occurs, then chances for fog should decrease. By Saturday, high pressure should move in from the north, pushing any remaining moisture into the north with possible light rain showers in the afternoon. Temps should be in the low 60s. By Saturday night, high pressure should return with clearing skies and calm winds. This should produce patchy fog and temps in the upper 40s. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... High pressure is expected to remain in the area through the beginning of the week. The 925mb temps and upper air soundings show the upper level ridge piping warm air into the region Sunday a Monday with temps reaching into the low 70s. Temps should start to cool by mid week with the approach of the next system as a cold front. Extend guidance is inconsistent with the timing of the front and the amount of QPF, most likely depending on the track of any tropical moisture next week. && .AVIATION /16Z THURSDAY THROUGH MONDAY/... NEAR TERM: MVFR/IFR, occasional LIFR, this afternoon through tonight with rain and patchy fog. Southeast/south winds 10 to 15 knots with gusts up to around 20 knots today. South/southeast winds around 10 knots, becoming south/southwest tonight. SHORT TERM: Fri: MVFR north, conditions improving to VFR at Downeast terminals. N winds 5 to 10 kts. Fri night: Conditions improving to VFR across all terminals. N wind around 5 kts. Sat: Mostly VFR. Brief -SHRA possible across northern terminals. N wind. Winds light and variable. Saturday night...VFR conditions across all terminals, though brief IFR possible at any terminals which saw rain on Sat. Winds light and variable. Sun - Mon: VFR across all terminals. Winds NW to N. && .MARINE... NEAR TERM: Winds/seas below small craft advisory levels this afternoon through tonight. Rain and patchy fog this afternoon into tonight. SHORT TERM: Winds and seas will likely remain below SCA criteria through the end of the week and into the weekend. Winds may briefly gust to around 20 kts Thursday night. Rain and patchy fog could limit visibility Thursday night into early Friday morning. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ Near Term...Norcross/Bloomer Short Term...LaFlash Long Term...LaFlash Aviation...Norcross/LaFlash Marine...Norcross/LaFlash