Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 191837 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 237 PM EDT SAT APR 19 2014 .SYNOPSIS...
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HIGH PRESSURE WILL BUILD SOUTHEAST AND CREST ACROSS THE AREA ON SUNDAY BEFORE SLIDING OFFSHORE. A WARM FRONT WILL APPROACH THE REGION SUNDAY NIGHT. LOW PRESSURE WILL APPROACH FROM THE WEST ON TUESDAY AND PASS ACROSS THE AREA TUESDAY NIGHT. LOW PRESSURE WILL DEVELOP IN THE GULF OF MAINE TUESDAY NIGHT AND MOVE AWAY TO THE EAST ON WEDNESDAY. FAIR WEATHER IS THEN EXPECTED THROUGH THE REST OF THE WEEK.
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&& .NEAR TERM /THROUGH TONIGHT/...
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CLOUDS WILL MELT AWAY THIS EVENING WITH LOSS OF HEATING. THE MOUNTAINS COULD SEE CLOUDS LINGER A BIT LONGER IN THE UPSLOPE FLOW. SURFACE HIGH BUILDS SOUTHEAST OVERNIGHT WITH CLEARING SKIES AND LIGHT WINDS PRODUCING LOWS MAINLY IN THE TEENS AND 20S.
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&& .SHORT TERM /SUNDAY THROUGH SUNDAY NIGHT/...
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SURFACE HIGH CRESTS ACROSS THE AREA ON SUNDAY BEFORE SLIDING OFFSHORE IN THE AFTERNOON. A MOSTLY SUNNY HOLIDAY WITH HIGHS MAINLY IN THE 50S. IT WILL TURN COOLER ALONG THE COAST BY AFTERNOON AS THE LIGHT SYNOPTIC FLOW TURNS ONSHORE. CLOUDS WILL BE ON THE INCREASE SATURDAY NIGHT AS A WARM FRONT APPROACHES THE AREA.
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&& .LONG TERM /MONDAY THROUGH FRIDAY/...
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GENERALLY FAIR WEATHER EXPECTED MONDAY THROUGH THE FIRST PART OF TUESDAY AS THE AREA REMAINS UNDER SHORT WAVE RIDGING. A FEW SHOWERS WILL BE POSSIBLE MONDAY NIGHT INTO TUESDAY ACROSS THE FAR NORTHERN MOUNTAINS IN ASSOCIATION WITH A WARM FRONT...BUT MOST OF THE REGION SHOULD REMAIN DRY. A DIGGING SHORT WAVE TROUGH WILL APPROACH FROM THE WEST ON TUESDAY AND THIS WILL HELP PUSH A COLD FRONT FRONT TOWARD OUR AREA. FORCING FOR ASCENT WILL INCREASE DURING THE AFTERNOON TUESDAY...WHICH SHOULD ALLOW FOR SHOWERS MOVING INTO WESTERN ZONES BY LATE IN THE DAY. LOW PRESSURE IS EXPECTED TO DEVELOP ON THIS FRONT TUESDAY EVENING OVERHEAD...THEN MOVE NORTHEAST ON WEDNESDAY. AT THIS TIME...IT LOOKS LIKE THIS SECONDARY DEVELOPMENT WILL OCCUR TOO LATE AND TOO FAR NORTH TO ALLOW FOR A SUBSTANTIAL RAINFALL EVENT. SO...WE JUST EXPECTED RELATIVELY LIGHT SHOWERS TUESDAY NIGHT INTO EARLY WEDNESDAY IN THE EAST. THEREAFTER...COLD AIR ADVECTION WILL BE THE RULE THURSDAY WITH HIGH PRESSURE MOVING IN FOR FRIDAY RESULTING IN FAIR WEATHER BOTH DAYS.
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&& .AVIATION /18Z SATURDAY THROUGH THURSDAY/...
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SHORT TERM /THROUGH SUNDAY NIGHT/...GUSTY NW WIND TO 25 KT WILL DIMINISH THIS EVENING...OTHERWISE QUIET WITH VFR CONDITIONS. LONG TERM...MVFR OR LOWER CONDITIONS POSSIBLE TUESDAY NIGHT INTO EARLY WEDNESDAY IN SHOWERS.
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&& .MARINE...
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SHORT TERM /THROUGH SUNDAY NIGHT/...A PERIOD OF SCA WINDS AND SEAS THROUGH EARLY TONIGHT BEHIND THE COLD FRONT THEN LINGERING SCA SEAS THROUGH EARLY SUNDAY. A QUIET DAY FOR SUNDAY AND SUNDAY NIGHT AS THE SURFACE HIGH TRAVERSES THE WATERS. LONG TERM...OCCASIONAL MARGINAL SCA CONDITIONS WILL BE POSSIBLE ON THE OCEAN WATERS THROUGH THE EARLY WEEK PERIOD. MORE ROBUST SCA CONDITIONS WILL BE POSSIBLE MIDWEEK IN THE WAKE OF LOW PRESSURE.
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&& .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT SUNDAY FOR ANZ150>154. && $$ SCHWIBS/EKSTER

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