240  
FXUS61 KGYX 032214  
AFDGYX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GRAY ME  
614 PM EDT WED SEP 3 2025  
   
SYNOPSIS  
 
A DISTURBANCE MOVING THROUGH QUEBEC WILL BRING CHANCES FOR  
SHOWERS AND ISOLATED STORMS THIS AFTERNOON, MAINLY NORTH OF THE  
FOOTHILLS. A TROUGH SWINGING INTO THE GREAT LAKES WILL SEND A  
COLD FRONT TOWARDS NEW ENGLAND, BRINGING INCREASING CHANCES FOR  
SHOWERS THURSDAY NIGHT INTO FRIDAY. ANOTHER FRONT APPROACHES FOR  
SATURDAY PERHAPS ALLOWING FOR MORE SUBSTANTIAL RAINFALL AND  
THUNDERSTORMS OVER A WIDER AREA. HIGH PRESSURE MOVES IN EARLY  
NEXT WEEK.  
 
 
   
NEAR TERM /UNTIL 6 AM THURSDAY MORNING/  
 
615 PM UPDATE...ISOLATED SHOWERS AND THUNDERSTORMS CONTINUE IN  
THE MOUNTAINS EARLY THIS EVENING. THEY WILL CONTINUE TO TREND  
DOWNWARD AND EVENTUALLY DISSIPATE OVER THE NEXT HOUR OR TWO WITH  
THE LOSS OF DAYTIME HEATING.  
 
PREVIOUSLY...  
 
LATEST RAP13 ANALYZES A 500MB SHORTWAVE IN THE PROCESS OF MOVING  
ACROSS NORTHERN NEW ENGLAND. LIFT FROM THIS TROUGH WILL CONTINUE  
TO KICK OFF SCATTERED SHOWERS AND STORMS IN THE MOUNTAINS THIS  
AFTERNOON WITH MORE ISOLATED COVERAGE FARTHER SOUTH TOWARD THE  
FOOTHILLS WHERE SUBSIDENCE INCREASES AND MOISTURE IS LESS  
FAVORABLE. FORECAST SOUNDINGS REVEAL PRETTY LOW FREEZING LEVELS  
AT AROUND 7,500 FT AGL, AND WITH A FEW HUNDRED J/KG OF CAPE,  
STORMS COULD PRODUCE SMALL HAIL. DRY LOW LEVELS WILL ALSO  
SUPPORT A GUSTY WIND THREAT. SHOWERS AND STORMS WILL WANE THIS  
EVENING WITH THE LOSS OF DAYTIME HEATING AND AS THE TROUGH LIFTS  
OFF TO THE NORTH AND EAST.  
 
SKIES ARE EXPECTED TO CLEAR OUT BEHIND THE WAVE TONIGHT WITH  
GOOD RADIATIONAL COOLING WITH LOWS IN THE MID 40S TO LOWER 50S  
FOR MOST. VALLEY FOG IS AGAIN EXPECTED TONIGHT, AND GUIDANCE IS  
HINTING AT HIGHER FOG COVERAGE (AND POTENTIALLY DENSE) ACROSS  
WESTERN ME FROM THE COAST TO THE FOOTHILLS, WHERE I HAVE OPTED  
FOR "AREAS" WORDING RATHER THAN "PATCHY".  
 
 
   
SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/  
 
ONCE THE FOG LIFTS BY 9 AM OR SO THURSDAY MORNING, SHORTWAVE RIDGING  
WILL MOVE OVERHEAD AND BRING A DRY AND MOSTLY SUNNY DAY. SOUTHERLY  
FLOW WILL BE INCREASING AHEAD OF A FRONTAL BOUNDARY WITH SOMEWHAT  
BREEZY CONDITIONS OF 20-25 MPH AT TIMES. HIGHS WILL AGAIN BE IN THE  
MID 70S TO LOW 80S FOR MUCH OF THE REGION, ALTHOUGH THE MIDCOAST MAY  
BE A FEW DEGREES COOLER WITH THE WINDS DIRECTLY OFF OF THE GULF OF  
MAINE.  
 
A SHORTWAVE WILL CONTINUE TO PUSH THE FRONTAL BOUNDARY TOWARD NEW  
ENGLAND THURSDAY EVENING. MOISTURE WILL STEADILY INCREASE, BUT THERE  
WILL STILL BE SOME DRY AIR TO OVERCOME INITIALLY. I HAVE SLOWED  
THE ONSET OF RAIN SHOWERS SLIGHTLY, BUT WESTERN NH SHOULD START  
SEEING PRECIP BY LATE EVENING TO AROUND MIDNIGHT WITH A NORTH  
AND EASTWARD EXPANSION THROUGH THURSDAY NIGHT. HIGHEST AMOUNTS  
AND CHANCES WILL BE ACROSS WESTERN AND NORTHERN NH EXTENDING  
INTO THE WESTERN ME MOUNTAINS AND FOOTHILLS WHERE 0.10" TO 0.25"  
OF RAINFALL WILL BE POSSIBLE BY DAYBREAK FRIDAY. MORE FOG IS ON  
THE FORECAST WITH GUIDANCE FAVORING WESTERN ME, WHERE IT COULD  
BE DENSE IN SOME AREAS.  
 
 
   
LONG TERM /FRIDAY THROUGH WEDNESDAY/  
 
A BROAD UPPER-LEVEL LOW OVER EASTERN CANADA AND MID-LEVEL  
TROUGHING WILL ALLOW FOR A FEW PERIODS OF RAIN AND STORMS  
THROUGH THE WEEKEND.  
 
THE FIRST ARRIVES FRIDAY MORNING, THOUGH SHOWERS ARE BOUND TO BE  
MORE SCATTERED ONCE THEY ARRIVE IN NH AND MAINE. THIS IS BECAUSE MID-  
LEVEL TROUGHING PRESENT IS SITUATED TO THE WEST AND NEARLY UNIFORM  
SW WINDS ALOFT SHOULD USHER IN DRIER LOW-LEVEL AIR. THIS DRIER AIR  
WILL BE SHORT LIVED, AS IT MOVES EASTWARD AND A STREAM OF LOW-LEVEL  
MOISTURE ORIGINATING FROM THE REMNANTS OF EASTERN PACIFIC TC LORENA  
FLOWS INTO THE NORTHEAST. THIS FLOW OF MOISTURE SHOULD CONTINUE  
THROUGH THE WEEKEND, AND DAYTIME HEATING SATURDAY MORNING SHOULD  
ALLOW FOR CONVECTIVE INITIATION IN THE AFTERNOON. STORMS SHOULD  
HAVE AMPLE MOISTURE TO WORK WITH FROM THE AFOREMENTIONED  
MOISTURE STREAM AND HEAVY DOWNPOURS APPEAR POSSIBLE WITH SOME  
STORMS THAT DEVELOP. GUSTY WINDS MIGHT BE A POSSIBILITY AS WELL,  
WITH SOME FORECAST SOUNDINGS ALREADY SHOWING 30-40KT WINDS  
COULD DOWN TO THE SURFACE.  
 
THE UPPER-LEVEL LOW SHIFTS EASTWARD SUNDAY MORNING, AND CONDITIONS  
START TO IMPROVE ON SUNDAY AS DRY AIR WORKS IN FROM THE WEST  
THROUGHOUT THE DAY. HIGH PRESSURE WORKS INTO THE AREA NEXT MONDAY,  
WITH IT LIKELY STICKING AROUND THROUGH THE WEEK. VERY DRY AND COOL  
CONDITIONS ARE EXPECTED, WITH HIGH TEMPERATURES IN THE MID-70S.  
 
 
   
AVIATION /22Z WEDNESDAY THROUGH MONDAY/  
 
SHORT TERM...CAN'T COMPLETELY RULE OUT A BRIEF SHOWER/STORM AT  
HIE AND AUG THIS AFTERNOON, BUT CHANCES ARE TOO LOW FOR TAF  
INCLUSION. OTHERWISE, EXPECT FOG DEVELOPMENT AGAIN TONIGHT,  
ESPECIALLY AT RKD-AUG AND LEB- HIE...WHERE IFR-LIFR RESTRICTIONS  
LOOK LIKELY. ONCE FOG CLEARS OUT THURSDAY MORNING, ALL SHOULD  
SEE PREVAILING VFR DURING THE DAY, BUT IT WILL BE ON THE BREEZY  
SIDE WITH SOUTHERLY WINDS GUSTING TO AROUND 20 KT. FOG AND LOW  
STRATUS ARE AGAIN POSSIBLE THURSDAY EVENING AND NIGHT WITH  
INCREASING CHANCES FOR SHOWERS.  
 
LONG TERM...  
LOWERED RESTRICTIONS ARE EXPECTED ON FRIDAY, WITH RESTRICTIONS  
CONTINUING THROUGH SUNDAY MORNING. VFR EXPECTED SUNDAY THROUGH THE  
END OF NEXT WEEK.  
 
 
   
MARINE  
 
SHORT TERM...WINDS WILL BE PRIMARILY SOUTHERLY TODAY THROUGH THURSDAY  
NIGHT, WHICH WILL INCREASE GRADUALLY THURS-THURS NIGHT AS A COLD  
FRONT APPROACHES FROM THE WEST. HOWEVER, WINDS AND SEAS ARE EXPECTED  
TO REMAIN BELOW SCA LEVELS WITH WIND GUSTS EXPECTED TO REMAIN AROUND  
20 KT. MARINE FOG AND STRATUS REMAINS POSSIBLE, ESPECIALLY EAST OF  
PORTLAND AND CAPE ELIZABETH.  
 
LONG TERM...  
SOUTHERLY WINDS ARE EXPECTED ON FRIDAY, WITH WINDS AND SEAS  
INCREASING TO SCA THRESHOLDS BY THE END OF THE DAY. THESE CONDITIONS  
ARE LIKELY TO CONTINUE THROUGH THE END OF THE DAY SATURDAY. SEAS  
LOWER TO 2-4FT AND WINDS SHIFT TO WESTERLIES SATURDAY NIGHT. WINDS  
WILL ALSO WEAKEN TO 4-8KTS BY DAYBREAK SUNDAY. MOSTLY LIGHT AND  
VARIABLE WINDS, WITH SEAS OF 2-4 FEET ARE EXPECTED THROUGH MOST OF  
NEXT WEEK.  
 
 
   
FIRE WEATHER  
 
SOUTHERLY WINDS WILL INCREASE THURSDAY WITH GUSTS OF 20 TO 25  
MPH POSSIBLE. THESE WINDS COMBINED WITH RH FALLING TO 35 TO 40  
PERCENT OVER MUCH OF NH AND 40 TO 50 ACROSS INTERIOR MAINE COULD  
MAKE FOR INCREASED FIRE SENSITIVITY.  
 
 
   
GYX WATCHES/WARNINGS/ADVISORIES  
 
ME...NONE.  
NH...NONE.  
MARINE...NONE.  
 
 
 
 
 
SYNOPSIS...  
NEAR TERM...COMBS/EKSTER  
SHORT TERM...COMBS  
LONG TERM...PALMER  
AVIATION...COMBS  
MARINE...  
FIRE WEATHER...  
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