Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 152044 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 444 PM EDT SAT JUN 15 2013 .SYNOPSIS... HIGH PRESSURE WILL BUILD EASTWARD TO THE SOUTH OF THE REGION TONIGHT AS A WEAK COLD FRONT PUSHES INTO THE MOUNTAINS FROM THE NORTH. LOW PRESSURE WILL MOVE EAST ALONG THE FRONTAL BOUNDARY SUNDAY AFTERNOON AND NIGHT. A COLD FRONT WILL CROSS THE AREA MONDAY NIGHT AND TUESDAY. HIGH PRESSURE BUILDS IN FOR THE MIDDLE AND LATTER PART OF THE WEEK. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
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UPDATE... HAVE UPDATED GRIDS TO MAKE A FEW MINOR ADJUSTMENTS TO THE FORECAST. SEA BREEZE CONTINUES TO COOL OFF THE COAST AND ALLOW FOR BREEZY CONDS ALONG THE SHORELINE. MEANWHILE...AC ARE PUSHING SE OVER THE INTERIOR. THESE CLOUDS SHOULD DISSIPATE AROUND SUNSET THIS EVENING. PREV DISC... A WEAK COLD FRONT WILL MOVE INTO THE MOUNTAINS TONIGHT. AHEAD OF THIS BOUNDARY THERE`S A SLIGHT CHANCE OF A SHOWER IN THE MOUNTAINS THIS EVENING...OTHERWISE SKIES SHOULD BE CLEARING ACROSS THE AREA OVERNIGHT WITH TEMPS FALLING INTO THE 40S TO LOWER 50S.
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&& .SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/... CLOUDS WILL BE ON THE INCREASE LATE SUNDAY MORNING AS A TROUGH APPROACHES FROM THE WEST. THIS WILL BRING THE THREAT OF SHOWERS TO WESTERN AREAS BY MID-AFTERNOON...WITH THE THREAT SPREADING EASTWARD DURING THE REMAINDER OF THE AFTERNOON AND EVENING. ALTHOUGH CAN`T RULE OUT AN ISOLATED THUNDERSTORM...THE ATMOSPHERE IS FORECAST TO BE FAIRLY STAPLE. TEMPS SHOULD REACH THE MID 60S IN THE MOUNTAINS TO 70S ELSEWHERE. THE TROUGH SWINGS THROUGH THE AREA SUNDAY NIGHT WITH THE THREAT OF SHOWERS DIMINISHING BY MORNING. && .LONG TERM /MONDAY THROUGH SATURDAY/... MONDAY MORNING STARTS WITH ZONAL FLOW ALOFT OVER NORTHERN NEW ENGLAND AND A WEAK SURFACE LOW JUST NORTH OF THE GREAT LAKES. AS AN UPPER LEVEL LOW OVER JAMES BAY BEGINS TO DROP SOUTHWARD ON MONDAY THE SURFACE LOW WILL BEGIN TO INTENSIFY. THE FLOW APPEARS TO BE FAIRLY FAST SO IT IS STILL QUESTIONABLE WHETHER OR NOT IT WILL BE STRONG ENOUGH TO BRING US SOME PRECIPITATION. THE BEST CHANCE LOOKS TO BE OVER THE MOUNTAINS. A WEAK COLD FRONT MOVES THROUGH ON TUESDAY...BUT WILL LIKELY BRING LITTLE IN THE WAY OF WEATHER. HIGH PRESSURE THEN BUILDS OVER THE REGION FOR THE REMAINDER OF THE FORECAST PERIOD. && .AVIATION /21Z SATURDAY THROUGH THURSDAY/... SHORT TERM...VFR CONDITIONS TONIGHT AND SUNDAY MORNING. MVFR CONDITIONS POSSIBLE SUNDAY AFTERNOON AND NIGHT...IMPROVING TOWARD MORNING. LONG TERM... THERE COULD BE SOME MVFR CONDITIONS IN SHOWERS AND THUNDERSTORMS MONDAY EVENING AND OVERNIGHT AS LOW PRESSURE PASSES TO THE NORTH OF THE REGION. EXPECT VFR CONDITIONS FOR THE REMAINDER OF THE PERIOD. && .MARINE... SHORT TERM...WINDS AND SEAS SHOULD REMAIN BELOW SCA CRITERIA THROUGH SUNDAY NIGHT. LONG TERM...NO FLAGS EXPECTED. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$

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