Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 281427 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 1027 AM EDT THU AUG 28 2014 .SYNOPSIS... HIGH PRESSURE WILL BUILD IN FROM THE WEST THROUGH FRIDAY AND SHIFT OFFSHORE ON SATURDAY...BRINGING COOLER AND LESS HUMID CONDITIONS. A WARM FRONT CROSSES THE AREA SATURDAY NIGHT INTO SUNDAY. A RATHER SUMMERY PATTERN WILL CONTINUE INTO EARLY NEXT WEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... 1015AM UPDATE: DOWNSLOPING WINDS ALLOWING MOSUN CONDS ALG THE COASTAL PLAIN ALTHOUGH SOME DIURNAL AFTN FAIR WX CLDS EXPECTED. FURTHER INLAND PARTLY SUNNY CONDS EXPECTED THIS AFTERNOON. TEMPS WILL BE COOLER AND HUMIDITIES MUCH DRIER AS FCST. ONLY MINOR TWEAKS BASED ON LATEST OBS DATA. NOTE: RIP RISK WILL BE HIGH ALONG THE BEACHES ALONG THE ENTIRE COASTLINE. 615 AM...JUST AN UPDATE TO REFLECT CURRENT OBS...BUT FORECAST THINKING GENERALLY UNCHANGED FOR TODAY. MORE CLOUDS IN THE MTNS WITH A FEW ISOLATED SHRA IN THE UPSLOPE FLOW. MORE SUN AND WARMER TEMPS IN THE DOWNSLOPE AREAS. PREVIOUSLY FOR TODAY...500MB TROUGH SAG SE TOWARD WHATS LEFT OF CRISTOBAL...AND WILL SEE UPPER LVL TROUGH SWING THROUGH...THIS COULD PRODUCE A FEW LIGHT SHRA...ESPECIALLY IN UPSLOPE AREAS OF THE MTNS. ALSO WILL SEE BORDERLINE BREEZY CONDS TODAY WITH NW WINDS 10-15 MPH...WITH SOME GUSTS 20-25 MPH. THE NW FLOW WILL ALLOW FOR DOWNSLOPE WARMING ON THE COASTAL PLAIN WITH HIGHS IN THE MID TO UPPER 70S. IN THE MTNS...WITH MORE CLOUDS AND UPSLOPE...LOOK FOR HIGHS ONLY 65-70. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY NIGHT/... THE UPPR LVL TROUGH SHIFTS FURTHER E...AND EVERYWHERE CLEARS OUT FOR THE MOST PART. ENOUGH OF A PRES GRAD EXISTS...AT LEAST INTO THE EVE...TO KEEP SOME LIGHT NW WINDS GOING...AND PREVENT PERFECT RAD COOLING CONDS...SO LOWS WILL GENERALLY DROP BETWEEN THE MID 40S N...TO THE MID 50S S. A FEW OF THE SHELTERED ELEVATED MTN VLYS COULD DIP TO AROUND 40. AS THE HIGH SETTLES OVER THE REGION...LOOK FOR MAINLY SUNNY SKIES. HOWEVER...A WEAK E-NE FLOW WILL KEEP THINGS ON THE COOL SIDE...WITH HIGHS MOSTLY 70-75 ACROSS THE REGION. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... THE MODELS ARE IN GENERAL AGREEMENT ON THE LONG WAVE PATTERN WELL INTO NEXT WEEK. NEARLY ZONAL FLOW AND A MEAN JET POSITION TO OUR NORTH WILL BRING AN EXTENDED PERIOD OF ABOVE NORMAL TEMPERATURES TO THE FORECAST AREA. THE RIDGE SLIDES OFFSHORE SATURDAY WITH RETURN FLOW USHERING WARMER AND MORE HUMID AIR INTO THE REGION FOR THE HOLIDAY WEEKEND. A SLOW-MOVING COLD FRONT WILL BRING AN INCREASING CHANCE FOR SHOWERS AND THUNDERSTORMS AS WE HEAD THROUGH THE HOLIDAY WEEKEND AND INTO LABOR DAY. ANOTHER COLD FRONT WILL CROSS THE REGION ON WEDNESDAY. && .AVIATION /14Z THURSDAY THROUGH MONDAY/... .SHORT TERM...VFR THROUGH FRIDAY...EXPECT VLY FOG IN RIVER VALLEYS TONIGHT. .LONG TERM... SUN - MON...AREAS OF MVFR IN SHOWERS AND TSTMS. && .MARINE... .SHORT TERM... 1015AM UPDATE: HAVE EXTENDED THE SCA FOR SEAS FURTHER W OVER THE OUTER WATERS AND ALSO EXTENDED THEM UNTIL FRIDAY MORNING. INCREASED WAVE HEIGHTS ALG MUCH OF THE OUTER WATERS TO REFLECT INCOMING HIGHER SWELLS. A HIGH SURF ADVISORY HAS BEEN ISSUED FOR THE ENTIRE IMMEDIATE COASTLINE FOR THE REST OF TODAY THROUGH FRIDAY MORNING. RIP CURRENTS ARE LIKELY. PREV DISC: HAVE LEFT THE SCA FOR HAZ SEAS WHERE IT IS FOR NOW. LATEST WAVE GUIDANCE CONTINUE TO KEEP THE HIGHEST SWELL OF 5-7 FT FROM CRISTOBAL LIMITED MOSTLY TO THE WATERS S OF PENOBSCOT BAY. STILL COULD COME FURTHER W BY TONIGHT. NW WINDS BEHIND THE COLD FRONT SURGE TONIGHT...AND COULD GET CLOSE TO SCA CRITERIA AS WELL...BUT LOOKS TO STAY BLO ATTM. .LONG TERM... SAT - SUN...SMALL CRAFT WINDS AND SEAS ARE POSSIBLE. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...HIGH SURF ADVISORY UNTIL 11 AM EDT FRIDAY FOR MEZ023>028. NH...HIGH SURF ADVISORY UNTIL 11 AM EDT FRIDAY FOR NHZ014. MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 8 AM EDT FRIDAY FOR ANZ150-152. && $$ SYNOPSIS... NEAR TERM...CEMPA/MARINE SHORT TERM...MARINE AVIATION...MARINE

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