Area Forecast Discussion
Issued by NWS Caribou, ME

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783 FXUS61 KCAR 101603 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 1203 PM EDT Fri May 10 2024 .SYNOPSIS... High pressure builds across the region through Saturday night. A warm front approaches Sunday, then lifts to the north Sunday night and Monday. A storm system approaches from the west Monday night and Tuesday. && .NEAR TERM /THROUGH TONIGHT/...
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Update... Surface high pressure will ridge south across the region this afternoon, while upper level troffing weakens. Generally expect partly sunny/mostly cloudy skies this afternoon with diurnal cloud development. Could also have just enough support with diurnal heating and the remnants of the upper trof to support very isolated afternoon showers. However, not enough confidence to include showers in the forecast. Afternoon high temperatures will range from the mid to upper 50s, locally around 60, across the forecast area. Previous Discussion... Generally expect partly cloudy/mostly clear skies tonight. Tonight, temperatures will fall into the mid to upper 30s.
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&& .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... The surface level trof should keep the low pressure to the south over the waters on Saturday. RH models show the clouds building in early making for a mostly cloudy day. This with the cold pool should keep temps in the mid 50s across the region. By the afternoon, upper air model soundings show instability developing with lower CAPE values, but steep lapse rates. Nevertheless, the warm air in the mid levels and the lack of cool air to advect into the atmosphere, the chance of thunderstorms is unlikely. Scatter showers are expected through the afternoon and evening. By Saturday night, the upper level trof over the Great Lakes will slowly move E. Clouds should keep temps from in the upper 30s. By Sunday, shortwave energy from the SW is expected to move into the region bringing more moisture. The afternoon will bring more instability, but the lack of lift will only bring convective showers. By Sunday night, weak high pressure move in late to help make for partly cloud skies. && .LONG TERM /MONDAY THROUGH THURSDAY/... A developing occlusion is excepted to move across Canada with the triple point over New England on Monday and progress across the region through Tuesday. The warm sector of the occlusion and the warm front to the south is expected to bring a warming trend throughout next week. Showers are expected on Tuesday and into Wednesday. As the front moves through the area, there is a slight chance for thunderstorms on Wednesday, but lack of confidence in the timing of the track kept thunderstorms out of the forecast for the time being. High pressure should return by the end of the week. && .AVIATION /16Z FRIDAY THROUGH TUESDAY/...
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NEAR TERM: Generally expect VFR conditions across the region this afternoon through tonight. Very isolated showers possible this afternoon. However, MVFR conditions could begin to develop across southeast areas late tonight. Northeast/east winds 5 to 10 knots this afternoon. Light and variable winds tonight. SHORT TERM: Sat...Mainly VFR. Possible MVFR in rain showers. Light E winds. Sat night...VFR. Light ENE winds. Sun-Sun night...Mainly VFR. Possible MVFR in afternoon rain showers. Light and variable winds. Mon-Tue...MVFR in rain showers. S winds 5-15 kts.
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&& .MARINE...
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NEAR TERM: Winds/seas below small craft advisory levels this afternoon through tonight. SHORT TERM: Winds and seas should remain below SCA conditions through this time period.
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&& .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ Near Term...Norcross/AStrauser Short Term...LaFlash Long Term...LaFlash Aviation...Norcross/LaFlash Marine...Norcross/LaFlash