Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
873 FXUS61 KCAR 121816 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 216 PM EDT Sat Sep 12 2026 .WHAT HAS CHANGED... - No significant changes. && .KEY MESSAGES... 1) Showers Sunday into Monday morning. Rainfall will have minimal impact on the drought. 2) Patchy/areas of frost possible across northern areas Monday night. && .DISCUSSION... KEY MESSAGE 1...Showers Sunday into Monday morning. Rainfall will have minimal impact on the drought. KEY MESSAGE 1 DESCRIPTION... High pressure exits across the Maritimes tonight, while low pressure begins to develop in the Mid-Atlantic region and a cold front crosses Quebec Province. Clouds will increase early tonight, with showers then approaching from the west late. The low will reach the Gulf of Maine later Sunday, while the cold front approaches the Saint Lawrence Valley. Models have been trending offshore with the better upper level support and better precipitable water values. Current indications are that the heavier rains should remain across the waters of the Gulf of Maine, possibly clipping Downeast areas. Other showers are possible across northern areas in advance of the approaching cold front. Although instability is limited, could also have isolated/scattered thunderstorms across northern areas Sunday afternoon/evening. The low exits across the Maritimes Sunday night, while the cold front crosses the region and an upper trof approaches from the west. Shower chances will persist across the region Sunday night. The upper trof then crosses the region Monday keeping a chance of mostly early showers. Rainfall with this system will have minimal impact on the drought. KEY MESSAGE 2...Patchy/areas of frost possible across northern areas Monday night. KEY MESSAGE 2 DESCRIPTION... High pressure will build across the region behind the cold front Monday, bringing clear skies and light winds. This will result in favorable conditions for radiational cooling. Low temperatures will range from the mid to upper 30s across much of northern Maine. Patchy/areas of frost are possible Monday night across the Northern Areas but particularly in the normally colder low lying locations. && .AVIATION /18Z SATURDAY THROUGH WEDNESDAY/... Rest of this afternoon...VFR. Variable winds 5 to 10 knots, becoming south/southwest 10 to 15 knots. Tonight...VFR early. VFR/MVFR, occasional IFR, late. South winds 5 to 10 knots. Southwesterly low level wind shear possible across northern areas. Sunday...VFR/MVFR, occasional IFR, early. MVFR/IFR, occasional LIFR, during the afternoon. Scattered/numerous showers. Isolated/scattered afternoon thunderstorms possible, mostly north. South winds 10 to 15 knots with gusts up to around 20 knots. Sunday night...MVFR/IFR, occasional LIFR, early. VFR/MVFR, occasional IFR, late. Numerous/scattered showers north. An evening thunderstorm also possible. Isolated/scattered showers Downeast. South winds around 10 knots, becoming southwest/west. Monday...MVFR early, improving to VFR. NW winds 10-15 kt gusting to 25 kt. Monday night-Wednesday...VFR. Light NW winds become S Tuesday into Wednesday. && .MARINE... Winds/seas below small craft advisory levels tonight through Sunday night. Showers and patchy fog Sunday into Sunday night. All waters should experience sustained winds less than 15 kt, gusts less than 20 kt and seas 4 ft or less through Wednesday. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ DISCUSSION...SM/CN/MB AVIATION...SM/CN/MB