Area Forecast Discussion
Issued by NWS Caribou, ME

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000 FXUS61 KCAR 252034 AFDCAR AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CARIBOU ME 434 PM EDT TUE AUG 25 2015 .SYNOPSIS... A COLD FRONT WILL SLOWLY APPROACH TONIGHT...THEN CROSS THE REGION LATER WEDNESDAY. HIGH PRESSURE WILL BUILD ACROSS THE REGION LATER THURSDAY INTO FRIDAY. && .NEAR TERM /THROUGH WEDNESDAY/... A SLOW MOVING COLD FRONT WILL APPROACH FROM THE WEST TONIGHT...THEN BEGIN TO CROSS THE REGION WEDNESDAY. SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS THE REGION TONIGHT THROUGH WEDNESDAY IN ADVANCE OF THE FRONT. WITH ABUNDANT LOW LEVEL MOISTURE...LOCALLY HEAVY RAINS COULD OCCUR WITH ANY THUNDERSTORMS OR HEAVIER SHOWERS EARLY TONIGHT. FOG WILL ALSO MOVE INLAND FROM THE GULF OF MAINE TONIGHT...MOST EXTENSIVE ACROSS DOWNEAST AREAS. OVERNIGHT LOW TEMPERATURES WILL RANGE FROM THE LOWER TO MID 60S ACROSS THE REGION. HIGH TEMPERATURES WEDNESDAY WILL GENERALLY RANGE FROM THE LOWER TO MID 70S ACROSS THE FORECAST AREA. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... FOR WEDNESDAY NIGHT...THE COLD FRONT WILL SLOWLY EXIT THE EASTERN PORTION OF THE FORECAST AREA LATER IN THE EVENING. SHOWERS AND THUNDERSTORMS WILL END AS THE FRONT EXITS THE AREA. FURTHER WEST...TOWARDS BANGOR AND GREENVILLE....SHOWERS WILL END EARLY THE EVENING. MARGINALLY DRIER AND SLIGHTLY COOLER AIR WILL ADVECT INTO THE REGION LATER IN THE NIGHT AND PUSH THE STRATUS CLOUDS OUT OF THE AREA. HOWEVER...IT WILL STILL BE ANOTHER HUMID NIGHT WITH DEWPOINTS ABOVE 60F MOST OF THE NIGHT AND COASTAL FOG WILL PROBABLY LINGER THROUGH THE NIGHT. LOWS WILL STILL BE IN THE UPPER 50S TO NEAR 60F. A POST-FRONTAL SURFACE TROUGH ON THURSDAY AFTERNOON WILL FINALLY BRING IN SIGNIFICANTLY LESS HUMID AIR FOR THE FIRST TIME IN NEARLY TWO WEEKS. THIS SURFACE TROUGH WILL COINCIDE WITH THE PASSAGE OF AN UPPER LEVEL TROUGH AND SET OFF SHOWERS THURSDAY AFTERNOON WITH MODEST AMOUNTS OF CAPE BUT FAR LESS PRECIPITABLE WATER. AS A RESULT...IT IS HARD TO FORESEE MUCH MORE THAN A TENTH OF AN INCH OF RAINFALL WITH THESE SHOWERS.. AN ISOLATED THUNDERSTORM CANNOT BE RULED OUT. HIGHS ON THURSDAY WILL RANGE FROM THE LOWER 70S NORTH TO MID-UPPER 70S FOR BANGOR AND DOWN EAST. THE OFFSHORE FLOW WILL ENSURE THAT THE WARMEST TEMPERATURES ARE TOWARDS THE COAST. THE COOLER AIR WILL BE IN PLACE THURSDAY NIGHT UNDER HIGH PRESSURE. LOWS WILL DROP TO THE UPPER 40S IN THE ALLAGASH WHILE LOW TO MID 50S ARE ANTICIPATED ELSEWHERE. THE HIGH REMAINS IN PLACE FOR FRIDAY. HIGHS ON FRIDAY WILL BE IN THE LOW TO MID 70S WITH LOW HUMIDITY. AGAIN...THE OFFSHORE FLOW WILL PRODUCE HIGHER TEMPERATURES TOWARDS THE COAST. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... A RIDGE OF HIGH PRESSURE WILL BE LOCATED ALONG THE EAST COAST FRIDAY NIGHT AS A WEAK TROUGH IN EASTERN CANADA PUSHES A WEAKENING COLD FRONT THROUGH OUR AREA. THIS WILL BRING A PARTLY CLOUDY NIGHT FRIDAY NIGHT. THE FRONT WILL PUSH BACK NORTH AS A WARM FRONT ON SATURDAY AS MOISTURE LIFTS NORTH BEHIND THE HIGH WHICH WILL BE MOVING OUT INTO THE ATLANTIC. THE MOISTURE WILL BRING INCREASING CLOUDS SATURDAY AND SOME SHOWERS ARE POSSIBLE OVER THE NORTH SATURDAY AFTERNOON. A WEATHER DISTURBANCE MAY BRING SHOWERS THROUGHOUT THE AREA SATURDAY NIGHT INTO SUNDAY. DRY WEATHER SHOULD THEN RETURN MONDAY INTO TUESDAY AS HIGH PRESSURE BUILDS BACK INTO THE EAST ALONG WITH SOME UPPER LEVEL RIDGING. && .AVIATION /20Z TUESDAY THROUGH SATURDAY/... NEAR TERM: VARIABLE CONDITIONS WILL OCCUR ACROSS THE REGION THIS EVENING RANGING FROM VFR TO LIFR. IFR TO VLIFR CONDITIONS ARE THEN EXPECTED ACROSS THE FORECAST AREA OVERNIGHT INTO EARLY WEDNESDAY. GENERALLY EXPECT MVFR TO LIFR CONDITIONS ACROSS THE REGION LATER WEDNESDAY MORNING THROUGH THE AFTERNOON. SHORT TERM: EXPECT PREDOMINATELY IFR CONDITIONS WEDNESDAY NIGHT WITH THUNDERSTORMS POSSIBLE IN THE EVENING. LIFR IS LIKELY TOWARDS BHB AND THE COAST WEDNESDAY NIGHT IN FOG. CONDITIONS WILL BECOME VFR THURSDAY THROUGH FRIDAY FOR ALL TERMINALS. VFR CONDITIONS ARE EXPECTED EARLY SATURDAY. CONDITIONS MAY LOWER TO MVFR ACROSS THE NORTH SATURDAY AFTERNOON. && .MARINE... NEAR TERM: WINDS/SEAS WILL REMAIN BELOW SMALL CRAFT ADVISORY LEVELS TONIGHT THROUGH WEDNESDAY. VISIBILITIES WILL BE REDUCED IN FOG TONIGHT THROUGH WEDNESDAY...ALONG WITH SHOWERS AND THUNDERSTORMS. SHORT TERM: FOG CONTINUES UNTIL THURSDAY MORNING. LOWER PERIOD SE SWELL NEAR 4 FT IS EXPECTED WEDNESDAY NIGHT INTO THURSDAY. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...NONE. MARINE...NONE. && $$ NEAR TERM...NORCROSS SHORT TERM...MCW LONG TERM...BLOOMER AVIATION...NORCROSS/MCW MARINE...NORCROSS/MCW

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