Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 102244 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 644 PM EDT THU JUL 10 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 /TONIGHT/... 645 PM UPDATE... HAVE ONLY MADE MINOR UPDATES TO HOURLY TEMPERATURES. FORECAST ON TRACK WITH HIGH PRESSURE AND DRY AIR ALLOWING TEMPERATURES TO FALL OFF TONIGHT. COOLEST AIR WILL BE IN NORTHWEST AREAS NEAR THE CENTER OF HIGH PRESSURE. ORIGINAL DISCUSSION... HIGH PRESSURE OVERHEAD TONIGHT. CUMULUS THAT DEVELOPED DURING THE DAY WILL DISSIPATE AND HIGHER CLOUDS STREAMING UP FROM SOUTHWEST WILL MOVE OFF TO THE EAST LEAVING A MOSTLY CLEAR SKY. MUCH COOLER TONIGHT WITH LOWS IN THE LOW 40S NORTH TO LOW 50S SOUTH. USED A BLEND OF MAV/MET GUIDANCE FOR TEMPERATURES. && .SHORT TERM /FRIDAY AND 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 /00Z FRIDAY THROUGH TUESDAY/... SHORT TERM...VFR TODAY THROUGH FRIDAY NIGHT. 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...QUIET ON THE WATERS. NO FLAGS. 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. && $$ NEAR TERM UPDATE... KIMBLE

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