Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 301838 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 238 PM EDT MON MAR 30 2015 .SYNOPSIS...
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A SECONDARY COLD FRONT WILL CROSS THE REGION TONIGHT AND WILL PUSH OFFSHORE BY TUESDAY MORNING. HIGH PRESSURE WILL GRADUALLY BUILD IN FROM THE NORTHWEST TUESDAY THROUGH WEDNESDAY. HIGH PRESSURE WILL CREST OVER THE REGION WEDNESDAY NIGHT AND WILL SHIFT OFFSHORE ON THURSDAY AS A WARM FRONT APPROACHES FROM THE SOUTHWEST. THE WARM FRONT WILL BE QUICKLY FOLLOWED BY A COLD FRONT EARLY FRIDAY. THE FRONT WILL STALL SOUTH OF THE AREA FRIDAY AND LOW PRESSURE WILL TRACK NORTHEAST ALONG IT FRIDAY NIGHT AND SATURDAY. ANOTHER AREA OF LOW PRESSURE CROSSING SOUTHERN CANADA SATURDAY NIGHT WILL DRIVE A COLD FRONT THROUGH THE REGION BY SUNDAY MORNING. HIGH PRESSURE WILL BUILD IN FROM THE WEST BEHIND THE FRONT ON SUNDAY.
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&& .NEAR TERM /THROUGH TONIGHT/...
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PRECIPITATION ASSOCIATED WITH THE 1ST IN A SERIES OF COLD FRONTS WILL BE DEPARTING THE FORECAST AREA TO THE EAST LATE THIS AFTERNOON. MAY SEE SOME BREAKS IN THE OVERCAST DEVELOPING DURING THE EVENING HOURS DOWNWIND OF THE MOUNTAINS BUT CLOUDS WILL ONCE AGAIN BE ON THE INCREASE TOWARD MIDNIGHT AS A SECONDARY COLD FRONT SWINGS THROUGH THE REGION. EXPECT MUCH OF THE AREA TO SEE A DRY NIGHT BUT SNOW SHOWERS WILL CONTINUE IN THE MOUNTAINS OVERNIGHT AND INTO TUESDAY MORNING WHERE AN INCH OR TWO OF ACCUMULATION WILL BE POSSIBLE. OVERNIGHT LOWS WILL GENERALLY RANGE THROUGH THE 20S FROM NORTH TO SOUTH.
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&& .SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
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SKIES WILL CLEAR EARLY TUESDAY SETTING UP A MOSTLY SUNNY DAY ACROSS THE FORECAST AREA AS HIGH PRESSURE BUILDS IN FROM THE NORTHWEST. SUNSHINE AND DOWNSLOPING WINDS WILL HELP BOOST TEMPS INTO THE LOWER TO MID 40S IN SOUTHERN AND CENTRAL MAINE AND NEW HAMPSHIRE. HIGHS WILL RANGE THROUGH THE 30S IN THE NORTH. TUESDAY NIGHT LOOKING MOSTLY CLEAR AND QUIET AS HIGH PRESSURE CONTINUES TO BUILD IN FROM THE WEST. LOW TEMPS WILL DIP TO BETWEEN 5 AND 10 DEGREES NORTH AND WILL RANGE THROUGH THE TEENS TO LOWER 20S SOUTH.
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&& .LONG TERM /WEDNESDAY THROUGH MONDAY/...
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A PROGRESSIVE PATTERN WILL DEVELOP THROUGH THE WEEK. ON WEDNESDAY THE COLDER AIR AND TROUGH WILL MOVE OUT OF OUR AREA. AS IT DOES A WEAK STORM WILL PASS THROUGH SOUTHERN NEW ENGLAND, BRINING CLOUD COVER INTO THE SOUTHERN PORTION OF OUR AREA. CLEAR SKIES TO THE NORTH WILL ALLOW FOR OVERNIGHT TEMPERATURES TO ONCE AGAIN FALL INTO THE SINGLE DIGITS IN THE NORTH AND MID 20S SOUTH. BY THURSDAY MORNING TEMPERATURES WILL BEGIN TO WARM ALOFT AS AN UPPER LEVEL RIDGE BUILDS INTO THE REGION. SOUTHERLY FLOW WILL DEVELOP AROUND A HIGH SITUATED OFF THE CAROLINA COAST. FOR NEW HAMPSHIRE SOUTH OF THE NOTCHES AND THE CT RIVER VALLEY THIS SOUTH FLOW WILL ALLOW TEMPERATURES TO CLIMB TO NEAR 50. ALONG THE MAINE COAST FROM PORTLAND THROUGH PENOBSCOT BAY THAT SAME SOUTH WIND WILL FLOW OVER THE 37 DEGREE OCEAN, KEEPING TEMPERATURES BELOW 40 FOR THE IMMEDIATE COAST. FRIDAY WILL SEE MORE WARMING... WITH SOUTHERN NH REACHING 60 DEGREES. A COLD FRONT WILL APPROACH FROM THE WEST THROUGH THE LATE AFTERNOON BRINGING SHOWERS. THAT FRONT WILL STALL ACROSS THE REGION FRIDAY NIGHT BEFORE ANOTHER LOW REDEVELOPS ALONG IT ON SATURDAY. STILL A BIT OF A SPREAD ON TIMING WITH THE SHOWERS, FRONT LOOKS TO STALL OFF SHORE WHICH WOULD KEEP JUST SOUTHERN SECTIONS IN RAIN SHOWERS WHILE THE MOUNTAINS SEE JUST CLOUDS, HOWEVER EXACT LOCATION IS A BIT SUSPECT AND WOULD NOT BE SURPRISED TOSEE THE MOUNTAINS HOLD ONTO THE RAIN A BIT LONGER. NO MATTER THE TIMING, THE RESULT IS AN EXTENDED PERIOD OF SHOWERS FRIDAY NIGHT INTO SATURDAY. WITH WARM TEMPS FRIDAY... IT WILL FALL AS RAIN FOR ALL BUT THE HIGHEST SUMMITS. BUT AS THE COLD FRONT MOVES FURTHER THROUGH ON SATURDAY AFTERNOON COLD AIR WILL SWITCH THE PRECIP OVER TO UPSLOPE SNOW SHOWERS IN THE MOUNTAINS. SUNDAY WILL SEE COLDER HIGH PRESSURE AGAIN MOVE INTO THE REGION FOR THE START OF NEXT WEEK.
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&& .AVIATION /18Z MONDAY THROUGH SATURDAY/...
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SHORT TERM...AREAS OF MVFR CIGS/VSBY EARLY THIS EVENING... IMPROVING TO VFR. VFR TUESDAY THROUGH TUESDAY NIGHT. LONG TERM... CONDITIONS WILL DETERIORATE TO IFR ON THURSDAY NIGHT... WITH LIFR IN FOG POSSIBLE FOR COASTAL SITES. WILL SEE A MIX OF MVFR AND IFR THROUGH THE DAY ON FRIDAY BEFORE RETURNING TO VFR LATE SATURDAY.
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&& .MARINE...
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SHORT TERM...SCA`S IN EFFECT THROUGH EARLY TUESDAY AFTERNOON. LONG TERM...SCA POSSIBLE FOR THE OUTER WATERS THURSDAY INTO FRIDAY.
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&& .GYX WATCHES/WARNINGS/ADVISORIES...
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ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 3 PM EDT TUESDAY FOR ANZ150>154.
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&& $$

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