Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 280704 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 304 AM EDT THU AUG 28 2014 .SYNOPSIS...
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HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT 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.
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&& .NEAR TERM /UNTIL 6 AM THIS MORNING/...
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THE LAST OF THE SHRA CROSSING THE ISLANDS OF PENOBSCOT ATTM...ANT T/TDS STARTING TO SLOWLY DROP OFF. WILL SEE SOME PATCHY FOG IN SOME SHELTERED AREAS THROUGH SUNRISE...BUT SHOULD SEE NW WINDS MIX DOWN AND TDS WILL DROP OFF QUICKLY AFTER SUNRISE. 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.
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&& .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM FRIDAY/...
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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.
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&& .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
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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.
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&& .AVIATION /07Z THURSDAY THROUGH MONDAY/...
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.SHORT TERM...WILL LKLY SEE KLEB IN OUT OF FOG THROUGH DAYBREAK...AND MIGHT SEE SOME DEVELOP AT AUG OR RKD. THINKING EVERYWHERE ELSE WILL SEE ENOUGH BOUNDARY LYR MIXING TO PREVENT IT. OTHERWISE VFR THROUGH TODAY...WITH NW WINDS GUSTING TO AROUND 20 KTS AT TIMES. EXPECT VLY FOG IN THE USUAL SPOTS TONIGHT. VFR CONTINUE THROUGH FRIDAY. .LONG TERM... SUN - MON...AREAS OF MVFR IN SHOWERS AND TSTMS.
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&& .MARINE...
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.SHORT TERM...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.
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&& .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 8 PM EDT THIS EVENING FOR ANZ150. && $$ SYNOPSIS... NEAR TERM...CEMPA SHORT TERM...CEMPA LONG TERM...SCHWIBS AVIATION...CEMPA/SCHWIBS MARINE...CEMPA/SCHWIBS

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