Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 010423 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 1223 AM EDT FRI MAY 1 2015 .SYNOPSIS... PERSISTENT LOW PRESSURE SHIFTS EAST OUT OF THE CANADIAN MARITIMES TONIGHT...BRINGING ONE MORE DAY OF CLOUDS AND A FEW LIGHT SHOWERS AND SPRINKLES. HIGH PRESSURE BUILDS IN FRIDAY AND SATURDAY AND WILL SHIFT OFFSHORE ON SUNDAY...ALLOWING A WARMING TREND FOR THE WEEKEND INTO EARLY NEXT WEEK. A COLD FRONT WILL WILL CROSS THE REGION MONDAY NIGHT AND TUESDAY...PROVIDING A CHANCE OF SHOWERS. && .NEAR TERM /UNTIL 6 AM THIS MORNING/...
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1220 AM...POST MIDNIGHT UPDATE SCALES BACK POPS OVER CENTRAL AND SW NH TO INCLUDE JUST A FEW SCT SPRINKLES...WHICH WILL WIND DOWN WELL BEFORE SUNRISE. THE WEAK PRECIP ECHOES...AT LEAST THOSE THAT CAN BE SEEN THROUGH THE SIGNIFICANT BIOLOGICAL ECHOES...ARE WEAKENING EVEN MORE. 10 PM...MOIST...LOW LEVEL FLOW WILL CONTINUE OVER NORTHERN NEW ENGLAND THIS EVENING. WITH A WEAK UPPER LEVEL LOW PRESSURE SYSTEM STILL IN PLACE...ALONG WITH A SURFACE BOUNDARY...A FEW MORE ISOLATED SHOWERS OR SPRINKLES WILL CONTINUE INTO THIS EVENING. AGAIN...THIS PRECIPITATION IS MAINLY DIURNALLY DRIVEN AND WILL GRADUALLY DISSIPATE DURING THE NIGHT. LOOK FOR ALL AREAS TO BE AT OR ABOVE FREEZING FOR OVERNIGHT LOWS TONIGHT.
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&& .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/... STILL CONSIDERABLE AMOUNTS OF CLOUDS TOMORROW...HOWEVER AS THE WINDS BEGIN TO BACK TO THE NORTH...DRIER AIR WILL FILTER IN AT THE LOWER LEVELS OF THE ATMOSPHERE. THIS WILL REDUCE THE CHANCE FOR ANY ISOLATED SHOWERS. CLOUDS WILL CONTINUE TO SLOWLY DISSIPATE FRIDAY NIGHT. HOWEVER...THIS MAY LEAD TO THE DEVELOPMENT OF PATCHY FOG. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... OVERALL A VERY QUIET PATTERN FOR THE OUTLOOK PERIOD. A BROAD SURFACE/UPPER RIDGE BUILD ACROSS NEW ENGLAND SATURDAY THROUGH MONDAY BRINGING WITH IT DRY CONDITIONS AND A GRADUAL WARMING TREND. THE WARMEST DAY LOOKS TO BE MONDAY WITH TEMPERATURES REACHING WELL INTO THE 70S ON THE DEVELOPING SOUTHWEST FLOW. ON TUESDAY A SHALLOW COLD FRONT MOVES SOUTH ACROSS THE AREA BUT TEMPERATURES WILL STILL REACH NEAR 70 BEFORE ITS PASSAGE. SCATTERED SHOWERS WILL ALSO BE POSSIBLE WITH THE FRONT. ON WEDNESDAY ANOTHER RIDGE OF HIGH PRESSURE BUILDS OVER THE AREA AND WITH TEMPERATURES AT H85 +5 TO +10 TEMPERATURES SHOULD REACH NEAR 70 OR INTO THE LOWER 70S ONCE AGAIN. STAYED CLOSE TO THE BLENDED MODEL TEMPERATURES WHICH IF ANYTHING MAY TURN OUT TO BE JUST A FEW DEGREES TOO COOL FOR NEXT WEEK BUT WILL REEVALUATE ON LATER MODEL RUNS. && .AVIATION /04Z FRIDAY THROUGH TUESDAY/... SHORT TERM...IFR CONDITIONS EXPECTED TO PREVAIL THRU FRI. HOWEVER...WILL SEE SOME POCKETS OF MVFR CIGS INTO FRI MORNING NEAR A WEAK SURFACE TROF THAT HAS SET UP OVER NH. DAYTIME HEATING IS EXPECTED TO LIFT ANY CIGS ABOVE 3000 FT HOWEVER. PATCHY FOG MAY DEVELOP FRIDAY NIGHT. LONG TERM...VFR THROUGH MONDAY. POSSIBLY MVFR CONDITIONS IN SCATTERED SHOWERS TUESDAY. && .MARINE... SHORT TERM...WINDS AND SEAS WILL BE BELOW SCA LEVELS IN THE SHORT TERM PORTION OF THE FORECAST. LONG TERM...WINDS/SEAS TO REMAIN BELOW SCA CONDITIONS EXCEPT MAYBE APPROACHING SCA CONDITIONS MONDAY. && .FIRE WEATHER... GENERALLY QUIET WEATHER WILL CONTINUE INTO THIS WEEKEND. AFTERNOON CLOUDS AND AN OCCASIONAL SHOWER CANNOT BE RULED OUT TONIGHT INTO EARLY FRIDAY. RELATIVE HUMIDITY VALUES WILL REMAIN MODERATE...WITH GOOD RECOVERY EACH NIGHT. WINDS ARE EXPECTED TO BE ON THE LIGHT SIDE...THOUGH AFTERNOON SEA BREEZES ARE POSSIBLE NEAR THE COAST. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$ SYNOPSIS... NEAR TERM...CEMPA SHORT TERM... LONG TERM... AVIATION... MARINE... FIRE WEATHER...

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