Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 211929 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 329 PM EDT SUN SEP 21 2014 .SYNOPSIS...
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A WARM SOUTHERLY FLOW WILL CONTINUE TONIGHT AHEAD OF AN APPROACHING COLD FRONT THAT WILL MOVE ACROSS THE REGION BY MORNING. HIGH PRESSURE WILL BRING A SHOT OF COOLER AIR FOR TUESDAY AND WEDNESDAY. THIS RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE REGION LATE IN THE WEEK AND THROUGH THE WEEKEND WITH A A SIGNIFICANT WARMING TREND EXPECTED.
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&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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A COLD FRONT WILL MOVE THROUGH THE REGION LATE TONIGHT. IN ADVANCE OF THE FRONT A VERY MOIST AIR MASS IS IN PLACE SO AREAS OF FOG IS EXPECTED TO DEVELOP TONIGHT. LATER TONIGHT SCATTERED SHOWERS WILL MOVE ACROSS THE AREA AHEAD AND ALONG THE COLD FRONT. TOWARD MORNING THE FRONT WILL MOVE OFF THE COAST AND DOWSLOPING WEST TO NORTHWEST WINDS WILL DEVELOP ALLOWING THE SHOWERS TO END AND SOME CLEARING TO TAKE PLACE OVER SOUTHERN AREAS. IN TH MTNS THE CLOUDS WILL LINGER. WITH THE CLOUD COVER AND MOIST AIR IN PLACE TEMPS WILL BE QUITE MILD AND USED A BLEND OF THE MODELS.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH MONDAY NIGHT/...
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HIGH PRESSURE WILL BUILD ACROSS THE REGION WITH A DOWNSLOPING WEST FLOW WHILE ALOFT AN UPPER TROF LINGERS ALLOWING CLOUDS AND MAYBE A SHOWER JUST IN THE MTNS. DOWNSLOPING WILL HELP TEMPS OVER THE SRN AREAS TO APPROACH 70 DEGREES. MON NIGHT HIGH PRES CONTINUES TO SLOWLY BUILD EAST WITH THE LIGHT DOWNSLOPING WINDS CONTINUING SO THE CLOUDS MAY LINGER IN THE MTNS BUT SRN AREAS SHOULD REMAIN MOSTLY CLEAR. MON NIGHT WILL BE MUCH COOLER WITH LOWS IN THE 30S IN THE MOUNTAINS AND 40S ELSEWHERE.
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&& .LONG TERM /TUESDAY THROUGH SUNDAY/...
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A SHORT WAVE TROUGH WILL PASS ACROSS NORTHERN ZONES ON TUESDAY...A WILL RESULT IN SOME UPSLOPE CLOUDS IN THE MOUNTAINS AND PERHAPS A FEW SHOWERS. THEREAFTER...BLOCKING HIGH PRESSURE SETS UP FOR THE REST OF THE EXTENDED PERIOD. THIS WILL MEAN THE REST OF THE WEEK AND WEEKEND SHOULD BE DRY/SUNNY WITH WARM DAYS AND CHILLY NIGHTS. WENT HIGHER THAN THE CONSENSUS FOR MAXES LATE WEEK/WEEKEND AND COLDER THAN CONSENSUS AT NIGHT...SIMILAR TO THE MEX. MAY HAVE TO BUMP HIGHS FOR FRI/SAT GOING FORWARD IF CURRENT WX PATTERN WITH WARM NWLY FLOW SETS UP...COULD SEE A DAY IN THE 80S AROUND THAT TIME.
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&& .AVIATION /19Z SUNDAY THROUGH FRIDAY/...
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SHORT TERM...MAINLY IFR/LIFR CONDS EXPECTED TONIGHT IN STRATUS/FOG/SHOWERS. CONDS IMPROVE TO VFR MON MORNING AND CONTINUE VFR THROUGH MON NIGHT. LONG TERM...VFR IS EXPECTED TUE THROUGH FRIDAY MOST LOCATIONS. EXCEPTION WILL BE TYPICAL RIVER VALLEY FOG LATE NIGHT/EARLY MORNING HOURS.
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&& .MARINE...
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SHORT TERM...WINDS WILL REMAIN BLO SCA CRIT BUT SEAS WILL BUILD LATER TONIGHT AND THROUGH MON NIGHT SO A SCA FOR HAZARDOUS SEAS HAS BEEN ISSUED. LONG TERM...HIGH PRESSURE SHOULD DOMINATE THE WATERS TUE THROUGH SAT WITH SUB-SCA CONDITIONS EXPECTED.
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&& .GYX WATCHES/WARNINGS/ADVISORIES...
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ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 3 AM MONDAY TO 6 AM EDT TUESDAY FOR ANZ150>154.
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