Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 110402 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 1202 AM EDT FRI JUL 11 2014 .SYNOPSIS... HIGH PRESSURE WILL BUILD IN FROM THE WEST AND HOLD OVER THE REGION THROUGH FRIDAY. HIGH PRESSURE WILL SHIFT OFFSHORE SATURDAY. A WARM FRONT WILL APPROACH FROM THE SOUTHWEST SATURDAY NIGHT AND SUNDAY THEN GRADUALLY LIFT INTO THE REGION ON MONDAY. LOW PRESSURE OVER SOUTHERN ONTARIO WILL DRIVE A COLD FRONT TOWARD THE REGION ON TUESDAY. THE FRONT WILL PUSH INTO THE REGION TUESDAY NIGHT THEN SLOWLY PUSH OFFSHORE ON WEDNESDAY. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... UPDATED TO INPUT LATEST OBSERVED DATA RESULTING IN NO MORE THAN MINOR TWEAKS TO THE PREVIOUS FCST. HIGH PRESSURE BUILDING IN IS BRINGING CLR TO MOSTLY CLR SKIES AND LGT WINDS. EXCEPTION IS UPPER LVL TROF AND SFC LOW/FNT TO OUR S SPREADING SOME CLOUDINESS INTO SE NH AT THIS TIME. TEMPS COOLING BUT DEW POINTS HIGH ENOUGH THAT SOME F WILL FORM...ESPECIALLY IN FAVORED LOW LYING AREAS. LOWS WILL BE MOSTLY IN THE 40S N AND 50S S. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/... HIGH PRESSURE CONTINUES TO HOLD SWAY OVER THE REGION FRIDAY AND FRIDAY NIGHT. PLEASANTLY WARM FRIDAY WITH LOW HUMIDITY AND LIGHT WINDS AND MOSTLY SUNNY SKIES. FRIDAY NIGHT CLEAR SKIES AND LIGHT WINDS AND COOL BUT NOT AS COOL AS TONIGHT. && .LONG TERM /SATURDAY THROUGH THURSDAY/... HIGH PRESSURE WILL CONTINUE OVER THE REGION SATURDAY WITH A WARM SW FLOW ALOFT. A FEW WEAK SHORT WAVES WILL BE MOVING THRU THE INCREASINGLY MOIST SW FLOW LATER IN THE WEEKEND ALLOWING THE AIR MASS TO DESTABILIZE. AN INCREASING CHANCE OF SHOWERS IS EXPECTED LATER IN THE WEEKEND. EARLY NEXT WEEK AN APPROACHING STRONG UPPER TROUGH AND ASSOCIATED COLD FRONT WILL CONTINUE TO ALLOW THE AIR MASS TO FURTHER DESTABILIZE. THE TIMING OF THE PASSAGE OF THE FRONT AND TROUGH LOOKS TO BE LATE TUESDAY AND TUESDAY NIGHT SO THUNDERSTORM ACTIVITY WILL BE EXPECTED LEADING UP TO THE FRONTAL PASSAGE. THE FRONT EXITS THE REGION BY WEDNESDAY WITH CLEARING. STAYED CLOSE TO THE SUPERBLEND GUIDANCE FOR POPS AND TEMPERATURES. && .AVIATION /04Z FRIDAY THROUGH TUESDAY/... SHORT TERM /THROUGH FRIDAY NIGHT/...VFR. AREAS OF F POSSIBLE OVERNIGHT INTO EARLY FRIDAY MORNING. AT THIS TIME NOT HIGH ENOUGH PROBABILITY TO INCLUDE IN ANY TAFS...BUT LEB...HIE AND CON ARE THE MOST LIKELY TAF SITES TO SEE ANY F. LONG TERM...MAINLY VFR SATURDAY. LATER IN THE WEEKEND AND THRU TUESDAY NIGHT SCATTERED SHOWERS/THUNDERSTORMS AT TIMES COULD RESULT IN MVFR/IFR CONDITIONS. && .MARINE... SHORT TERM /OVERNIGHT THROUGH FRIDAY NIGHT/...WILL UPDATE TO ADJUST WINDS AND SEAS UP SOME TNGT AND FRIDAY...DUE TO CURRENT BUOY REPORTS AND EXPECTED SEA BREEZE TO ENHANCE ONSHORE FLOW ON FRIDAY. STILL EXPECT WINDS AND SEAS TO REMAIN WELL BELOW SCA LEVELS THRU THE SHORT TERM UNDER THE INFLUENCE OF HIGH PRESSURE. LONG TERM...WINDS/SEAS TO REMAIN BELOW SCA CONDITIONS THRU MONDAY. AHEAD OF THE COLD FRONT TUESDAY AN INCREASING SOUTHERLY FLOW MAY ALLOW WINDS/SEAS TO REACH SCA CONDITIONS. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$

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