Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 301001 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 601 AM EDT SAT AUG 30 2014 .SYNOPSIS... HIGH PRESSURE CENTERED OVER THE GULF OF MAINE WILL GRADUALLY SHIFT FURTHER OFFSHORE TODAY AND TONIGHT. A SLOW-MOVING COLD FRONT WILL APPROACH FROM THE NORTHWEST ON SUNDAY...BEFORE STALLING OVER THE REGION MONDAY. ANOTHER COLD FRONT WILL APPROACH OUR REGION FROM THE WEST ON TUESDAY...BEFORE CROSSING MAINE AND NEW HAMPSHIRE TUESDAY NIGHT. HIGH PRESSURE WILL BUILD BACK OVER NEW ENGLAND WEDNESDAY THROUGH FRIDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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600 AM...MINOR ESTF UPDATE TO REFLECT CURRENT MESONET IN 1ST PERIOD GRIDS. PREV DISC... AT 06Z...A 1026 MILLIBAR HIGH WAS CENTERED OVER THE GULF OF MAINE. OUTSIDE OF A FEW HIGH CLOUDS SPILLING OVER THE TOP OF THE RIDGE...SKIES WERE MAINLY CLEAR ACROSS THE FORECAST AREA. FOG AND STRATUS HAD BEGUN TO FORM ACROSS SOME INTERIOR VALLEYS. FOG AND STRATUS SHOULD QUICKLY BURN OFF TODAY...WITH SUNSHINE AND THE RETURN FLOW AROUND THE OFFSHORE HIGH BOOSTING TEMPERATURES WELL INTO THE 70S WITH COMFORTABLE HUMIDITY LEVELS.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... TONIGHT A WAA PATTERN WILL SPREAD INCREASING MOISTURE AND CLOUDS INTO THE AREA. THE SWLY FLOW ALOFT WILL HAVE SOME EMBEDDED SHORT WAVES THAT COULD BRUSH AREAS NEAR THE INTERNATIONAL BORDER WITH SCT SHOWERS OR TSTMS TONIGHT. TEMPS TONIGHT WILL BE MILDER THEN THIS MORNING GIVEN EXPECTED CLOUD COVER AND HIGHER DEWPOINTS. ON SUNDAY...EXPECT SHOWERS AND THUNDERSTORMS TO EXPAND IN COVERAGE WITH HEATING AND COLD FRONT DROPPING SOUTHWARD INTO THE FORECAST AREA. IT`LL BE A HUMID DAY WITH HIGHS RANGING FROM THE UPPER 70S TO THE MID 80S. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... 00Z MODEL RUN IN BETTER AGREEMENT THIS MORNING IN REGARDS TO THE TIMING OF THE COLD FRONT SLIPPING SOUTH INTO CENTRAL PORTIONS OF MAINE SUNDAY NIGHT. THIS FRONT WILL THEN BECOME RELATIVELY STATIONARY OVER SOUTHERN PORTIONS OF THE FORECAST AREA ON MONDAY. THIS WILL LEAD TO SCATTERED SHOWERS AND POSSIBLY A THUNDERSTORM. THERE WILL STILL BE A SLIGHT CHANCE FOR A SHOWER TUESDAY AND TUESDAY NIGHT AS ANOTHER COLD FRONT SLOWLY CROSSES THE REGION. BY WEDNESDAY...CYCLONIC FLOW AND FAVORABLE UPSLOPE NORTHWESTERLY GRADIENT WILL ALLOW FOR A COUPLE OF SHOWERS AND ENHANCED CLOUDINESS IN THE NORTHERN MOUNTAINS. OTHERWISE...COOLER CONDITIONS WITH DOWNSLOPING ALONG THE COASTLINE. HIGH PRESSURE BUILDS BACK OVER THE REGION ON THURSDAY...SETTING THE STAGE FOR ANOTHER BRIEF WARMUP IN OUR REGION. && .AVIATION /10Z SATURDAY THROUGH WEDNESDAY/... .SHORT TERM...VFR THROUGH TODAY...EXCEPT SOME FOG AND STRATUS IN RIVER VALLEYS EARLY TODAY. SOME MVFR CIGS MAY DEVELOP TONIGHT IN SCT MTN SHOWERS AND TSTMS. AREAS OF MVFR SUN IN SHOWERS AND TSTMS WITH BRIEF IFR PSBL. .LONG TERM...LOCALIZED MVFR CONDITIONS IN SCATTERED SHOWERS...MAINLY THROUGH TUESDAY NIGHT. && .MARINE... .SHORT TERM... WINDS AND SEAS GRADUALLY INCREASE IN THE RETURN FLOW AROUND THE HIGH TODAY AND WE SHOULD REACH MARGINAL SMALL CRAFT CONDITIONS TONIGHT OUTSIDE THE BAYS...WITH LINGERING SMALL CRAFT CONDITIONS EXPECTED SUNDAY. .LONG TERM... NO FLAGS EXPECTED FOR THE LONG TERM PORTION OF THE FORECAST. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY FROM 7 PM THIS EVENING TO 8 AM EDT SUNDAY FOR ANZ150-152-154. && $$ ES

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