Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 020300 AAA AFDGYX AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE GRAY ME 1100 PM EDT WED JUL 1 2015 .SYNOPSIS... A COLD FRONT WILL CROSS THE REGION EARLY TONIGHT. THIS SYSTEM WILL BRING SHOWERS AND THUNDERSTORMS TO THE REGION THROUGH THIS EVENING...BEFORE HIGH PRESSURE BUILDS IN ON THURSDAY. HIGH PRESSURE WILL THEN REMAIN IN PLACE THROUGH EARLY NEXT WEEK. LOW PRESSURE ALONG THE NEW ENGLAND COASTLINE MAY BRING SHOWERS TO THE REGION LATE IN THE WEEK. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
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UPDATE...A FEW MINOR CHANGES TO ACCOUNT FOR LATEST OBSERVATIONAL TRENDS. SHOWERS NOW CONFINED TO THE MTNS...AND WILL DRIFT ACROSS NRN ZONES THRU THE NEXT SEVERAL HOURS. WILL HAVE TO WATCH FOR PATCHY VALLEY FOG GIVEN RECENT RAINS AND COOLING TEMPS OVERNIGHT. PREVIOUS DISCUSSION...SOUTHERN NEW HAMPSHIRE BEGINNING TO SEE A LITTLE BIT OF HEATING THIS AFTERNOON. ONCE TEMPERATURES CLIMB INTO THE MID 70S...CONVECTION SHOULD GET GOING. ALREADY SEEING SOME CONVECTION FIRING OVER SOUTHERN VERMONT AND EASTERN NEW YORK. THE REST OF THE FORECAST AREA PROBABLY WILL NOT SEE ENOUGH HEATING FOR MUCH IN THE WAY OF CONVECTION. LOW CLOUDS AND RAIN WILL HANG AROUND UNTIL THE COLD FRONT SWINGS THROUGH LATER TONIGHT. EXPECT PATCHY FOG TO DEVELOP AS SKIES BEGIN TO CLEAR AND RADIATIONAL COOLING GETS GOING.
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&& .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... HIGH PRESSURE BUILDS OVER THE REGION WITH SUNNY SKIES TOMORROW AND CLEAR SKIES TOMORROW NIGHT. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... A WEAK TROUGH OF LOW PRESSURE WILL CROSS THE REGION LATE IN THE WEEKEND. THIS WILL BRING ONLY A SLIGHT CHANCE FOR SHOWERS TO THE AREA AS THE WEAK SURFACE FRONT WILL BE RELATIVELY MOISTURE STARVED. HIGH PRESSURE WITH MODERATING TEMPERATURES WILL BE THE FOCUS FOR EARLY NEXT WEEK. MAINLY DRY CONDITIONS WILL ACCOMPANY THE 850 MB TEMPERATURES WILL FINALLY BE ON THE RISE WITHIN A WEAK DEVELOPING SOUTHWESTERLY FLOW. 12Z MODEL SUITE IN GOOD AGREEMENT WITH A SURFACE LOW DEVELOPING SOUTH OF NEW ENGLAND LATE IN THE WEEK. HOWEVER...THE PASSAGE AND EXACT TRACK OF THAT SYSTEM WILL PLAY A SIGNIFICANT ROLE AS TO WHETHER A STEADY RAIN WILL FALL OVER SOUTHERN AREAS...OR SCATTERED SHOWER ACTIVITY. && .AVIATION /03Z THURSDAY THROUGH MONDAY/... SHORT TERM...IFR/LIFR CONDITIONS WILL BE SLOW TO IMPROVE. EVEN THOUGH CIGS WILL LIKELY BEGIN TO INCREASE LATER THIS EVENING...RADIATIONAL COOLING WILL FORM FOG THAT WILL KEEP VSBYS AT IFR/LIFR AT MOST LOCATIONS THROUGH MORNING. VFR CONDITIONS ARE EXPECTED TOMORROW AND TOMORROW NIGHT. LONG TERM...HIGH PRESSURE WILL KEEP VFR CONDITIONS ACROSS THE AREA THROUGH EARLY THIS WEEKEND. NIGHTTIME FOG IS POSSIBLE EACH NIGHT AT LEBANON AND WHITEFIELD. IFR CONDITIONS ARE POSSIBLE ON SUNDAY AND AGAIN ON WEDNESDAY. && .MARINE... SHORT TERM...NO FLAGS EXPECTED. LONG TERM...WEAK PRESSURE GRADIENTS LEAD TO LIGHT WINDS AND LOW WAVE HEIGHTS THROUGH MUCH OF NEXT WEEK. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$ NEAR TERM...LEGRO

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