Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 151056 AAA AFDGYX AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE GRAY ME 656 AM EDT MON SEP 15 2014 .SYNOPSIS... HIGH PRESSURE WILL SHIFT OFFSHORE TODAY. A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT AND WILL CROSS THE REGION ON TUESDAY. A SECONDARY COLD FRONT WILL DROP SOUTH THROUGH THE REGION ON WEDNESDAY. HIGH PRESSURE WILL BUILD IN FROM THE WEST WEDNESDAY NIGHT THROUGH FRIDAY. HIGH [PRESSURE WILL SHIFT OFFSHORE FRIDAY NIGHT AND WILL HOLD OFF THE COAST THROUGH SATURDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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.UPDATE... ONLY MADE SLIGHT CHANGES TO THE FORECAST THIS MORNING FOR SKY COVER...HOURLY TEMPERATURES...AND DEW POINTS. AREA OF CLOUDS OVER THE NORTHERN COUNTIES IS BREAKING UP SLOWLY. NO OTHER CHANGES TO THE FORECAST AT THIS TIME.
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&& .PREVIOUS DISCUSSION...
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CLOUDS NEAR THE 925MB LEVEL ARE LOCATED ACROSS PORTIONS OF COOS...FRANKLIN...AND SOMERSET COUNTIES AS WELL AS SULLIVAN COUNTY THIS MORNING. THIS HAS DISRUPTED RADIATIONAL COOLING AND MAY PREVENT FROST FROM FORMING. HAVE NOT CANCELLED THE FROST ADVISORY FOR THESE AREAS HOWEVER AS THE CLOUDS ARE SLOWLY MOVING AND WE HAVE SEVERAL MORE HOURS IN THE ADVISORY. THAT SAID...IT WILL BE MUCH HARDER AT THIS POINT FOR FROST TO DEVELOP IN THESE AREAS. OTHER LOCATIONS IN THE FROST ADVISORY SUCH AS THE REMAINING MOUNTAINS AND FOOTHILLS ARE ALREADY APPROACHING THE MID 30S. ADDITIONAL CLOUDINESS BLANKETS THE COAST AND THE MESOMODEL WHICH DID PICK UP ON THESE CLOUDS...NAMELY THE RAP...SHOW THIS BROKEN TO OVERCAST DECK MOVING OFFSHORE BY MID MORNING. WE SHOULD SEE A QUICK WARM UP TODAY WITH HIGHS TOPPING OUT NEAR THE UPPER 50S NORTH TO LOWER TO MID 60S SOUTH AS HIGH PRESSURE SLIDES NW TO SE ACROSS THE AREA. INCREASING CLOUDS WILL APPEAR LATE TONIGHT AS A COLD FRONT APPROACHES FROM THE WEST.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/... TONIGHT`S LOWS WILL BE WARMER THAN THIS MORNING`S WITH INSULATING CLOUD COVER. STILL WE WILL LIKELY DROP INTO THE UPPER 30S ALONG THE CANADIAN BORDER. ELSEWHERE WE WILL BE IN THE 40S WITH READINGS NEAR 50 ALONG THE COAST. SHOWERS WILL ARRIVE GENERALLY AFTER MIDNIGHT FROM WEST TO EAST WITH LIGHT RAIN FALLING THROUGH EARLY AFTERNOON. SW WINDS SHOULD HELP HIGHS REACH THE UPPER 50S TO MID 60S WITH PERHAPS A COUPLE HIGHER READINGS OVER THE SW...DEPENDING ON HOW FAST THE DRY SLOT ARRIVES. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... SECONDARY COLD FRONT WILL APPROACH FROM THE NORTH TUESDAY NIGHT BRINGING INCREASING CLOUDS TO NORTHERN ZONES AFTER MIDNIGHT. LITTLE IN THE WAY OF FORCING WITH THIS BOUNDARY SO NOT GOING WITH MUCH IN THE WAY OF POPS. THE FRONT WILL SLOWLY SAG SOUTH INTO THE REGION ON WEDNESDAY. WEAK SHORTWAVE PASSING TO THE NORTH MAY KICK OFF A FEW LATE DAY SHOWERS IN NORTHERN ZONES. FRONT WILL FINALLY PUSH SOUTH OF THE REGION WEDNESDAY NIGHT AS HIGH PRESSURE BUILDS IN FROM THE WEST. MAY SEE A FEW LINGERING SHOWERS IN NORTHERN ZONES BUT EXPECT THE MAJORITY OF THE FORECAST AREA TO SEE A DRY NIGHT. MORNING CLOUDS WILL GRADUALLY GIVE WAY TO SUNNY SKIES ON THURSDAY AS HIGH PRESSURE BUILDS IN FROM THE WEST. WILL SEE FALL LIKE TEMPS AS COLD CANADIAN AIRMASS SETTLES INTO THE REGION. HIGHS WILL RANGE FROM THE MID 50S TO THE MID 60S. FAIR WEATHER CONTINUES THURSDAY NIGHT AND FRIDAY AS HIGH PRESSURE CRESTS OVER THE REGION. WILL LIKELY SEE A HARD FREEZE IN NORTHERN ZONES THURSDAY NIGHT AND AREAS OF FROST IN SOUTHERN INTERIOR AND CENTRAL PORTIONS OF MAINE AND NEW HAMPSHIRE. HIGH PRESSURE SHIFTS OFFSHORE FRIDAY NIGHT AND RETURN FLOW WILL BRING MODERATING TEMPS BACK INTO THE REGION ON SATURDAY. BROAD AREA OF OVER-RUNNING SETTING UP TO THE WEST WILL BRING INCREASING CLOUDS ON SATURDAY AND THE CHANCE FOR A LATE DAY SHOWER IN FAR NORTHERN ZONES. COLD FRONT WILL APPROACH FROM THE NORTHWEST SATURDAY NIGHT AND SUNDAY. SHORTWAVE SWINGING IN FROM THE WEST WILL SPIN UP SURFACE LOW PRESSURE ACROSS WESTERN QUEBEC ON SUNDAY....DRIVING A COLD FRONT TOWARD THE REGION. WILL SEE INCREASING CLOUDS ON SUNDAY WITH A CHANCE OF SHOWERS PUSHING INTO FAR NORTHWEST ZONES BY LATE IN THE DAY. COLD FRONT WILL SLOWLY PUSH INTO THE REGION FROM THE WEST SUNDAY NIGHT BRINGING A ROUND OF SHOWERS TO THE AREA. FRONT WILL PUSH OFFSHORE MONDAY MORNING. EXPECT MORNING CLOUDS TO GIVE WAY TO MOSTLY SUNNY SKIES AS HIGH PRESSURE BUILDS IN FROM THE WEST. && .AVIATION /12Z MONDAY THROUGH FRIDAY/... SHORT TERM...LIFR OR LOWER THIS MORNING THROUGH 1330Z AT KHIE... KCON... AND KLEB IN STRATUS AND FOG WILL IMPROVE TO VFR CONDITIONS EVERYWHERE TODAY. LOWERING CEILINGS LIKELY TONIGHT INTO TUESDAY WITH MVFR TO VFR CONDITIONS IN SHOWERS. LONG TERM...VFR TUESDAY NIGHT THROUGH FRIDAY. && .MARINE... SHORT TERM...NO FLAGS. LONG TERM...NO FLAGS. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...FROST ADVISORY UNTIL 8 AM EDT THIS MORNING FOR MEZ007>009-012. NH...FROST ADVISORY UNTIL 8 AM EDT THIS MORNING FOR NHZ001>009. MARINE...NONE. && $$ HANES/SINSABAUGH

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