Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 220709 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 309 AM EDT FRI AUG 22 2014 .SYNOPSIS... A WEAK WARM FRONT WILL GRADUALLY BE SUPPRESSED TO THE SOUTH TODAY THROUGH SATURDAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH. HIGH PRESSURE WILL REMAIN IN CONTROL OVER THE NORTHEAST SUNDAY THROUGH TUESDAY. A COLD FRONT WILL SLOWLY APPROACH FROM THE NORTH ON WEDNESDAY. && .NEAR TERM /THROUGH TODAY/... A SHARP UPPER TROF AXIS WILL BE DRIFTING SOUTHEAST ACROSS THE REGION TODAY. THE LOW LEVEL AXIS WILL EXTEND ACROSS SOUTHERN NH. THE UPPER TROF WILL CAUSE SCT MAINLY AFTN DIURNAL CONVECTION TO DEVELOP BUT OVER SRN AREAS OF NH A MORE PREVALENT AREA OF SHWRS WILL CONTINUE INTO THE MORNING WITH SOME LOCALLY HVY AMTS. BY LATE MORNING THE AXIS OVER SRN AREAS OF NH WILL WEAKEN AND DRIFT SOUTH ALLOWING THE PCPN TO BECOME MORE SCT IN NATURE. STILL EXPECTING AVG RAINFALL AMTS OF ARND 1 INCH OVR MUCH OF SRN NH WITH SOME LOCALLY HIGHER AMTS OF 2-3 INCHES PSBL. IN SOUTHERN MAINE AND NRN NH ONLY VERY LIGHT AMTS OF QPF EXPECTED...GENERALLY ON AN AVERAGE ONLY AROUND .10 OR LESS. WENT WITH VERY HIGH POPS INTO THE MORNING OVER SRN NH AND GENERALLY A CHC POP ELSEWHERE. USED A BLEND OF THE MODELS FOR TEMPS. && .SHORT TERM /TONIGHT THROUGH 6 PM SATURDAY/... THE UPPER TROF AXIS WILL CONTINUE OVER THE AREA TONIGHT BUT WILL CONTINUE TO DRIFT SOUTH ALLOWING A LARGE CANADIAN SURFACE RIDGE OF HIGH PRES TO BUILD SOUTH WITH COOLER AND DRIER AIR TO SPREAD ACROSS THE AREA. THE SUN SHOULD RETURN ON SATURDAY BUT TEMPS WILL REMAIN COOL. ONCE AGAIN A BLEND OF THE MODELS FOR MIN/MAX TEMPS. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... HIGH PRESSURE FORECAST TO BUILD OVER THE REGION SATURDAY NIGHT AS STRONG UPPER LEVEL RIDGE BUILDS INTO THE NORTHEAST. SHOULD SEE A MOSTLY CLEAR NIGHT WITH LOWS GENERALLY RANGING THROUGH THE 50S. HIGH PRESSURE WILL SETTLE INTO SOUTHERN NEW ENGLAND SUNDAY AND RETURN SOUTHWESTERLY FLOW WILL BRING MORE SUMMER LIKE TEMPERATURES BACK INTO THE REGION FOR THE BEGINNING OF THE WEEK. LOOKING FOR HIGHS MONDAY IN THE MID 70S TO NEAR 80 AND UPPER 70S TO LOWER 80S ON TUESDAY UNDER MOSTLY SUNNY SKIES. COLD FRONT WILL APPROACH FROM THE NORTH TUESDAY NIGHT AND THIS WILL SET THE STAGE FOR SHOWERS AND THUNDERSTORMS ON WEDNESDAY AS THIS BOUNDARY SAGS INTO SOUTHERN QUEBEC BEFORE LIFTING NORTHWARD AS A WARM FRONT WEDNESDAY AFTERNOON AND EVENING. COLD FRONT APPROACHES FROM THE WEST ON THURSDAY AND WILL PRODUCE ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS MAINLY DURING THE LATTER HALF OF THE DAY. EXPECT THE FRONT TO PUSH THROUGH OVERNIGHT THURSDAY NIGHT WITH SHOWERS AND THUNERSTORMS COMING TO AN END AFTER MIDNIGHT. && .AVIATION /07Z FRIDAY THROUGH TUESDAY/... SHORT TERM...VFR CONDS EXCEPT MVFR/IFR CONDS IN SHWRS AND ANY OCEAN STRATUS EARLY THIS MORNING. BY LATE MORNING MOSTLY VFR CONDS BUT WDLY SCT AFTN/EVNG SHWRS/TSTMS WILL LWR CIGS/VSBYS TO MVFR. CONDS BECOME VFR TNGT AND CONTINUE INTO SAT. LONG TERM...VFR SAT NIGHT THROUGH TUESDAY. && .MARINE... SHORT TERM...NO FLAGS. LONG TERM...NO FLAGS. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$

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