316  
FXUS61 KGYX 130534  
AFDGYX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GRAY ME  
134 AM EDT SAT SEP 13 2025  
   
SYNOPSIS
 
 
HIGH PRESSURE SLIDES SOUTHEAST ACROSS NEW ENGLAND TODAY. A WEAK  
COLD FRONT APPROACHES OVERNIGHT AND CROSSES SUNDAY BRINGING THE  
CHANCE FOR SCATTERED SHOWERS. HIGH PRESSURE BUILDS BACK IN  
MONDAY AND WILL KEEP THE AREA DRY THROUGH AT LEAST THE MIDDLE OF  
NEXT WEEK.  
 

 
   
NEAR TERM /THROUGH TODAY/
 
 
WATCHING SOME STRATUS DEVELOPING AND CREEPING UP THE CT RIVER  
VALLEY...BUT OTHERWISE A PRETTY QUIET NIGHT. TEMPS HAVE DIPPED  
INTO THE 30S ACROSS THE NORTHERN VALLEYS...BUT ENCROACHING  
CLOUDS WILL HELP TO SLOW/STOP THAT DROP.  
 
OTHERWISE AHEAD OF THE APPROACHING WEAK COLD FRONT IT WILL BE A  
NICE AFTERNOON. COMFORTABLE TEMPS ARE EXPECTED EVEN WITH  
INCREASING CLOUD COVER. I CANNOT RULE OUT A STRAY SHOWER AND  
ADDED SOME SLIGHT CHANCE POP WHERE MOISTURE WILL BE HIGHEST THIS  
AFTERNOON.  
 

 
   
SHORT TERM /TONIGHT THROUGH SUNDAY/
 
 
WITH CLOUD COVER AND CROSSING COLD FRONT I OPTED FOR NO MENTION  
OF VALLEY FOG TONIGHT. THE CLOUD COVER...WESTERLY BREEZE...AND  
SLIGHT DRY ADVECTION IS EXPECTED TO LIMIT THE COVERAGE. HOWEVER  
THIS IS PEAK RADIATION FOG SEASON AND IF WINDS GO CALM POST-  
FRONTAL PASSAGE I COULD SEE SOME LOCALIZED FOG.  
 
COLD POOL OVERHEAD SUN WILL LEAD TO A MORE UNSTABLE ATMOSPHERE.  
DAYTIME HEATING IS EXPECTED TO POP OFF ISOLATED TO SCATTERED  
SHOWERS. THESE WILL BE DIURNALLY DRIVEN AND WILL TEND TO WEAKEN  
AND BECOME EVEN MORE ISOLATED TOWARDS SUNSET.  
 

 
   
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
 
 
EVENING UPDATE...ONCE REMAINING SHOWERS ARE OUT OF THE REGION  
SUNDAY EVENING, THE MAIN FOCUS WILL BE STRONG HIGH PRESSURE  
MOVING OVERHEAD TO START THE WEEK. WITH IMPACTFUL WEATHER  
UNLIKELY THROUGH THE PERIOD, FOCUSED ON MONDAY NIGHT  
TEMPERATURES AND COOLING THEM VS. DETERMINISTIC NBM SOLUTION.  
THE HIGH WILL NEARLY BE DIRECTLY OVERHEAD FOR THE NIGHT, WITH  
CALM LOW LEVEL WINDS AND MOSTLY CLEAR SKIES. NOT AS COOL AS  
RECENT NIGHT, TEMPS LOOK TO FALL INTO THE MID 40S FOR MUCH OF  
THE INTERIOR AND POTENTIALLY TO THE COAST.  
 
PREVIOUS DISCUSSION...  
HIGH PRESSURE BUILDS IN MONDAY AND WILL DOMINATE THE PATTERN  
THROUGH THE MIDDLE OF NEXT WEEK. THIS WILL ALLOW FOR WARM SUNNY  
DAYS AND COOL NIGHTS. AN UPPER LOW MAY MIGRATE UP THE EAST COAST  
DURING THE SECOND HALF OF NEXT WEEK WHILE THE MAJORITY OF  
ENSEMBLE MEMBERS KEEP THE AREA PRECIPITATION FREE THROUGH  
FRIDAY.  
 
HIGH PRESSURE BUILDS IN BEHIND PASSING FRONT MONDAY AND WILL  
SETTLE OVER NEW ENGLAND THROUGH THE MIDDLE OF THE WEEK. THIS  
WILL ALLOW FOR MODERATING DAY TIME TEMPERATURES WITH HIGHS  
CREEPING INTO THE 80S TUESDAY AND WEDNESDAY. CONDITIONS WILL  
ALSO BE FAVORABLE FOR RADIATIONAL COOLING WHILE THE AIRMASS DOES  
NOT LOOK QUITE AS COOL AS THE ONE THAT ALLOWED FOR PATCHY FROST  
ACROSS THE NORTH THE PAST TWO NIGHTS. LOWS WILL GENERALLY BE IN  
THE 40S WITH UPPER 30S ACROSS NORTHERN VALLEYS. AN UPPER LOW  
MAY MIGRATE UP THE EAST COAST LATE NEXT WEEK WHILE THERE IS A  
LIMITED SIGNAL THAT THIS SYSTEM WILL BRING APPRECIABLE RAINFALL.  
 

 
   
AVIATION /04Z SATURDAY THROUGH WEDNESDAY/
 
 
SHORT TERM...LOCAL IFR OR LOWER CONDITIONS THIS MORNING IN  
VALLEY FOG. SOME LOW CIGS MAY ALSO ATTEMPT TO SNEAK UP THE CT  
RIVER VALLEY BEFORE SUNRISE. DAYTIME MIXING WILL BRING  
WIDESPREAD VFR CONDITIONS AGAIN. WINDS WILL BE LARGELY SOUTHWEST  
TO SOUTH...BUT SOME SEA BREEZE IS EXPECTED NEAR THE COAST AND  
MAY TURN WINDS MORE EASTERLY IN SOME LOCATIONS...ESPECIALLY  
TOWARDS THE SEACOAST. TONIGHT SOME MARINE STRATUS IS POSSIBLE  
TOWARDS THE MIDCOAST...BUT OTHERWISE CLOUD COVER IS EXPECTED TO  
DISRUPT THE USUAL DEVELOPMENT OF VALLEY FOG.  
 
LONG TERM...MAINLY VFR THROUGH THE PERIOD. CONDITIONS WILL BE  
FAVORABLE FOR VALLEY FOG MOST NIGHTS THAT WILL LIKELY BRING  
IFR/LIFR TO KLEB AND KHIE.  
 

 
   
MARINE
 
 
SHORT TERM...WINDS AND SEAS WILL REMAIN BELOW SCA THRESHOLDS  
THIS WEEKEND. AN APPROACHING COLD FRONT WILL BE WEAK ENOUGH THAT  
SEA BREEZES SHOULD STILL ATTEMPT TO FORM DURING THE AFTERNOON  
HOURS.  
 
LONG TERM...WINDS AND SEAS STAY BELOW SCA THRESHOLDS THROUGH THE  
PERIOD. HIGH PRESSURE BUILDS OVER THE WATERS MONDAY FOR LIGHT  
ONSHORE WINDS DURING THE DAY TIME INTO MIDWEEK.  
 

 
   
GYX WATCHES/WARNINGS/ADVISORIES
 
 
ME...NONE.  
NH...NONE.  
MARINE...NONE.  
 

 
 

 
 
NEAR TERM...LEGRO  
SHORT TERM...LEGRO  
LONG TERM...CORNWELL/SCHROETER  
 
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