Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
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 272104 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 504 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 /UNTIL 6 AM THURSDAY MORNING/...
-- Changed Discussion --
ONE FRONT NOW HAS NOW REACHED THE COAST WITH WINDS SHIFTING TO THE W. NO CONVECTION HAS DEVELOPED ALONG THE COLD 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.
-- End Changed Discussion --
&& .SHORT TERM /6 AM THURSDAY MORNING 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 /21Z 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...
-- Changed Discussion --
.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...UPDATED TO REPLACE THE SCA FOR WINDS AND SEAS WITH AN SCA FOR JUST HAZARDOUS SEAS. BASED ON THE FCST WINDS WILL STAY BELOW SCA LEVELS. THE PASSING OF HURRICANE CRISTOBAL WELL OUT TO SEA WILL SEND SWELLS INTO OUR OUTER MOST WATERS...MAINLY AFFECTING THE OPEN WATERS SOUTH OF PENOBSCOT BAY. SEAS OF 3-6 FT ARE EXPECTED THERE. THE SWELL FROM CRISTOBAL COULD INCREASE TO COVER A LARGER AREA...AND WE MAY NEED TO EXTEND THE SCA FOR HAZARDOUS SEAS FURTHER WEST BY THU NIGHT. .LONG TERM...MARGINAL SCA CONDITIONS POSSIBLE THROUGH EARLY TO MID NEXT WEEK.
-- End Changed Discussion --
&& .GYX WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 8 PM EDT THURSDAY FOR ANZ150.
-- End Changed Discussion --
&& $$

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