Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 280142 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 942 PM EDT MON APR 27 2015 .SYNOPSIS... AN UPPER LEVEL LOW WILL PROVIDE UNSETTLED WEATHER AND CLOUDS THROUGH MIDWEEK AS IT MEANDERS NEARBY. A FEW SHOWERS MAY OCCUR FROM TIME TO TIME. && .NEAR TERM /THROUGH TUESDAY/... 9PM UPDATE...SHOWERS CONTINUE TO PERSIST ACROSS SOUTHERN MAINE AND THE UPPER LEVEL LOW CONTINUES TO IMPACT THE AREA. ALOFT A VERY WEAK VORT MAX VISIBLE ON THE WATER VAPOR IMAGE IS JUST ENOUGH FORCING TO MAINTAIN THE SHOWERS. WHILE THE VERTICAL EXTENT OF THE SHOWERS HAS DECREASED, THE AFFECT ON THE GROUND IS THE SAME... VERY LIGHT RAIN CONTINUES TO FALL IN SCTTERED SHOWERS. WITH DIURNAL FORCING LONG GONE, IT SEEMS THIS UPPER LEVEL SUPPORT WILL BE ENOUGH TO SUSTAIN THE SHOWERS AND HAVE THUS INCREASED POP FOR THE REMAINDER OF THE NIGHT. 6PM UPDATE...JUST A FEW MINOR ADJUSTMENTS. SHOWERS SILL ONGOING THROUGH THE MIDCOAST BUT EXPECTED TO DECREASE IN COVERAGE AFTER SUNSET. AT 18Z...A 992 MILLIBAR LOW WAS PARKED OVER NOVA SCOTIA WITH A WEAK SURFACE TROUGH EXTENDING WESTWARD INTO EASTERN MAINE. CLOUDS AND BANDS OF LIGHT SHOWERS CONTINUE TO ROTATE WEST AND SOUTH AROUND THIS VERTICALLY STACKED STORM SYSTEM INTO THE FORECAST AREA. CLOUDS AND SHOWERS WILL DIMINISH TONIGHT WITH LOSS OF HEATING. LOW TEMPERATURES WILL RANGE FROM MID 30S TO THE LOWER 40S. && .SHORT TERM /TUESDAY NIGHT/... ON TUESDAY...THE UPPER LOW WILL SHIFT A BIT FURTHER EAST. CLOUDS WILL STILL DOMINATE OUR NORTHERN AND EASTERN FORECAST ZONES ALONG WITH A FEW WIDELY SCATTERED LIGHT SHOWERS...WHILE FAR SOUTHWEST MAINE AND THE SOUTHERN THIRD OF NEW HAMPSHIRE SHOULD SEE AT LEAST SOME SUNSHINE. IT`LL BE WINDIER THEN TODAY AS THE SURFACE GRADIENT TIGHTENS UP WITH NORTHERLY WINDS GUSTING UP TO 30 MPH AT TIMES. HIGHS WILL BE MAINLY IN THE 50S...WITH A FEW 60 DEGREE READINGS POSSIBLE OVER FAR SOUTHERN NEW HAMPSHIRE WHERE WE SHOULD SEE THE MOST SUNSHINE. CLOUDS LINGER TUESDAY NIGHT ALONG WITH A FEW STRAY SHOWERS OR FLURRIES AS THE LOW REMAINS NEARLY STATIONARY OFFSHORE. LOWS WILL RANGE FROM THE MID 30S TO LOWER 40S. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... MEAN LOW PRESSURE WILL CONTINUE TO MEANDER AROUND OUR REGION THROUGH MUCH OF THE FORECAST PERIOD. STRONG LOW PRESSURE IS EXPECTED TO DEVELOP OFF THE MID ATLANTIC COAST LATE THIS WEEK...BUT PASS WELL OFFSHORE OVER THE WEEKEND. OVERALL...WE EXPECT VARIABLE CLOUDS...A FEW PERIODS OF SHOWERS...AND NEAR NORMAL TEMPERATURES. && .AVIATION /02Z TUESDAY THROUGH SATURDAY/... SHORT TERM...SCT MVFR THROUGH TUESDAY IN SHOWERS. NORTHERLY SFC WINDS WILL GUST UP TO 30 KT ON TUE. LONG TERM...VFR CONDITIONS ARE EXPECTED THROUGH MUCH OF THE PERIOD WITH PERIODS OF MVFR CONDITIONS POSSIBLE IN SHOWERS. && .MARINE... SHORT TERM...NORTHERLY WINDS WILL INCREASE TO SMALL CRAFT TONIGHT INTO TUESDAY AS THE PRESSURE GRADIENT TIGHTENS ACROSS THE WATERS. A FEW GUSTS TO NEAR GALE ARE POSSIBLE OUTSIDE THE BAYS. LONG TERM...SCA CONDITIONS MAY DEVELOP LATE IN THE WEEK AND THE WEEKEND AS LOW PRESSURE PASSES WELL SOUTH OF THE WATERS. OTHERWISE...SUB-SCA CONDITIONS ARE EXPECTED. && .FIRE WEATHER... RECENT WIDESPREAD RAINS AS WELL AS GOOD RELATIVE HUMIDITY RECOVERY EACH NIGHT WILL HELP KEEP FIRE CONCERNS LOW. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 5 PM EDT TUESDAY FOR ANZ150>152-154. && $$ SYNOPSIS... NEAR TERM...CURTIS SHORT TERM... LONG TERM... AVIATION... MARINE... FIRE WEATHER...

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