Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KGYX 271909 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 309 PM EDT WED AUG 27 2014 .SYNOPSIS... HIGH PRESSURE WILL GRADUALLY BUILD IN FROM THE WEST TONIGHT THROUGH FRIDAY AND SHIFT OFFSHORE ON SATURDAY. A WARM FRONT CROSSES THE AREA SATURDAY NIGHT INTO SUNDAY. A RATHER SUMMERY PATTERN WILL CONTINUE INTO EARLY NEXT WEEK. && .NEAR TERM /THROUGH TONIGHT/... ONE FRONT NOW HAS NOW REACHED THE COAST WITH WINDS SHIFTING TO THE W. NO CONVECTION HAS DEVELOPED ALONG THE CIOLD FRONT AND WITH STEEPENING LAPSE RATES CAN`T RULE OUT A FEW LATE THIS AFTN OR EARLY EVENING WITH SCNDY FRONT. A COOLER AND DRIER AMS WILL BE MOVING IN LATER TONIGHT AS CANADIAN HIGH PRES BUILDS SLOWLY E. TEMPS WILL STILL BE MILD TONIGHT WITH LOWS IN THE 60S AS THE BULK OF THE COOL AMS DOESN`T ARRIVE UNTIL THURSDAY. && .SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/... THE COOLER AND MUCH DRIER AMS TAKES HOLD AS A LARGE RIDGE OF HIGH PRES BUILDS ACROSS THE REGION. HIGH TEMPS WILL BE IN THE 70S AND DOWNSLOPING WINDS WILL ALLOW PARTLY TO MOSTLY SUNNY CONDITIONS. THE CENTER OF THE COOL CANADIAN HIGH PRES SYSTEM WILL BE OVER THE REGION THU NIGHT ALLOWING RADIATIONAL COOLING AND TEMPS TO FALL INTO THE MID 40S TO MID 50S ALONG THE COAST. USED A BLEND OF THE MODELS FOR FORECAST TEMPS WHICH WERE ALL WITHIN A FEW DEGS OF ONE ANOTHER. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... FRIDAY WILL BE A VERY NICE DAY WITH HIGH PRESSURE OVERHEAD. THE HIGH WILL SHIFT OFFSHORE SATURDAY AND BRING THE RETURN OF A WARM AND MOIST AIRMASS FOR SUNDAY. ANY SHOWERS AND STORMS SHOULD BE RELEGATED TO THE MOUNTAINS ON SATURDAY...BUT CHANCES ARE STILL LOW EVEN THERE. ON SUNDAY...FORCING FOR ASCENT WILL INCREASE AND BRING A GREATER CHANCE OF SHOWERS AND THUNDERSTORMS TO THE REGION. THIS THREAT WILL LAST THROUGH SUNDAY NIGHT AND INTO MONDAY AS A FRONT SAGS ACROSS THE AREA. THIS FRONT MAY HANG AROUND FOR A FEW DAYS...PERHAPS ALLOWING FOR PERIODS OF SHOWERS AND THUNDERSTORMS INTO EARLY NEXT WEEK. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... .SHORT TERM...VFR CONDS EXCEPT IFR ALONG THE CT RIVER VALLEY LATE TNGT INTO EARLY THU MORNING. .LONG TERM...SCT SHOWERS AND THUNDERSTORMS MAY ALLOW FOR IFR CONDITIONS AT TIMES...MAINLY SUNDAY. && .MARINE... .SHORT TERM...WILL CONTINUE THE SCA FOR THE WATERS S OF PENOBSCOT BAY FOR TNGT THRU THU...WHERE SEAS OF 4-6 FT EXPECTED. THE SWELL FROM CRISTOBAL COULD INCREASE TO CLOSER TO 6 FT LATE TONIGHT INTO THU...AND MAY NEED TO PUSH SCA FURTHER WEST BY THU NIGHT. .LONG TERM...MARGINAL SCA CONDITIONS POSSIBLE THROUGH EARLY TO MID NEXT WEEK. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 8 PM EDT THURSDAY FOR ANZ150. && $$

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.