Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 191936 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 336 PM EDT TUE AUG 19 2014 .SYNOPSIS...
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HIGH PRESSURE SHIFTS SOUTHWARD TONIGHT. A WEAK COLD FRONT WILL DROP SOUTHWARD OUT OF CANADA THURSDAY AND WASH OUT OVER THE AREA ON FRIDAY...AND COULD PRODUCE A FEW SHOWERS...ESPECIALLY IN THE MOUNTAINS. COOL...BUT FAIR WEATHER IS EXPECTED OVER THE WEEKEND AS HIGH PRESSURE BUILDS IN FROM THE NORTH. A WARMING TREND IS EXPECTED EARLY NEXT WEEK.
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&& .NEAR TERM /TONIGHT/...
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HIGH PRESSURE OVER THE AREA BRINGS LIGHT WINDS AND A CLEAR SKY TONIGHT. TEMPERATURES SHOULD FALL OFF AGAIN TONIGHT TO ABOUT THE SAME LEVELS THEY DID LAST NIGHT. DEWPOINTS MAY BE A FEW DEGREES HIGHER WHICH MEANS THERE WILL BE AT LEAST AS GREAT A CHANCE FOR FOG TONIGHT AS THERE WAS LAST NIGHT... IF NOT A LITTLE BIT GREATER TONIGHT. HAVE FAVORED THE MOUNTAIN VALLEYS WITH FOG TONIGHT.
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&& .SHORT TERM /WEDNESDAY AND WEDNESDAY NIGHT/...
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HIGH PRESSURE REMAINS OVER THE AREA WEDNESDAY. TEMPERATURES WILL BE A FEW DEGREES WARMER ALOFT... AND THUS HIGH TEMPERATURES WILL BE A FEW DEGREES WARMER AS WELL... NEAR 80. SEA BREEZE WILL OCCUR AT THE COAST. EXPECT VALLEY FOG AGAIN WEDNESDAY NIGHT IN FAVORED LOCATIONS. WITH HIGHER DEWPOINTS... TEMPERATURES WILL LIKELY STAY IN THE 50S.
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&& .LONG TERM /THURSDAY THROUGH TUESDAY/...
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STAGNANT PATTERN EXPECTED AT THE END OF THE THE WEEK AND THROUGH THE WEEKEND AS WEAK 500MB REX BLOCK SETS UP OVER EASTERN CANADA AND THE NORTHEAST US...KEEPING THINGS ON THE COOLER SIDE THROUGH THE WEEKEND. ON THURSDAY...AS WEAK 500MB TROUGHING DEVELOPS...WILL SEE A WEAK COLD FRONT DROP SWD...PERHAPS SOMETHING CLOSE TO A BACK-DOOR FRONT. THIS WILL BRING A THREAT OF SHOWERS TO NE ZONES ON THURSDAY. THE FRONT STALLS OVER THE N AND E ZONES THURSDAY NIGHT INTO FRIDAY AND EVENTUALLY WASHES OUT BY FRIDAY NIGHT AND SATURDAY. THERE WILL BE ANOTHER THREAT OF SHOWERS ON FRIDAY INTO FRIDAY EVENING GENERALLY IN THE NORTHERN AND EASTERN ZONES. THE WEAK FLOW AT THE SURFACE AND ALOFT WILL TREND TOWARD ONSHORE WHICH WILL KEEP THINGS COOL...ESPECIALLY NEAR THE COAST...WITH HIGHS THURSDAY AND FRIDAY ON THE COAST 70 TO 75...AND IN THE MID TO UPPER 70S INLAND. ONE QUESTION IS IF THE ONSHORE FLOW WILL PRODUCE ANY COASTAL STRATUS OR FOG...ESPECIALLY ON FRIDAY AND FRIDAY NIGHT. BY SATURDAY...SHOULD SEE HIGH PRESSURE START BUILDING IN FORM THE NORTH...AND CLEARING OUT THE REMNANTS OF THE FRONT...WITH SOME SLIGHT INCREASE IN TEMPERATURES OVER THE WEEKEND. A MORE WESTERLY FLOW BEGINS TO DEVELOP ALOFT EARLY NEXT WEEK...AND THIS SHOULD ALLOW THE WARMER SPOTS TO REACH AROUND 80...WITH MOST OTHER PLACES IN THE MID-UPPER 70S.
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&& .AVIATION /19Z TUESDAY THROUGH SUNDAY/...
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SHORT TERM...VFR EXCEPT FOR NOCTURNAL FOG AT LEBANON AND WHITEFIELD. FOG COULD ALSO OCCUR AT CONCORD AND AUGUSTA TONIGHT THOUGH CONFIDENCE IS MUCH LESS HERE. LONG TERM...MAINLY VFR THURSDAY THROUGH SUNDAY. WILL HAVE TO WATCH FOR SOME COASTAL FOG AND STRATUS FRIDAY AND FRIDAY NIGHT.
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&& .MARINE...
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SHORT TERM... WIND FLOW WILL BE DOMINATED BY SEABREEZE CIRCULATIONS. WAVE HEIGHTS VERY LOW THROUGH THE END OF THE WEEK. LONG TERM...WINDS AND SEAS WILL REMAIN WELL BELOW SMALL CRAFT THRESHOLDS INTO THE WEEKEND...WITH INCREASING W WINDS BY SUNDAY.
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&& .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$ SYNOPSIS...CEMPA NEAR TERM...KIMBLE SHORT TERM...KIMBLE LONG TERM...CEMPA AVIATION...CEMPA/KIMBLE MARINE...CEMPA/KIMBLE

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