883
FXUS61 KGYX 091734
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
134 PM EDT TUE SEP 9 2025
SYNOPSIS
HIGH PRESSURE REMAINS IN CONTROL OF OUR WEATHER THROUGH THE
REST OF THE WEEK AND INTO THE WEEKEND. THE DAYTIME TEMPERATURES
WILL BE SEASONABLE WITH FAIR WEATHER AND THE OVERNIGHTS WILL BE
COOL. ANOTHER EXTENDED STRETCH OF DRY WEATHER CONTINUES, WITH
MAINLY DRY CONDITIONS EXPECTED THROUGH THIS WEEKEND.
NEAR TERM /THROUGH TONIGHT/
GENERALLY QUIET WEATHER IS EXPECTED TODAY AND TONIGHT ACROSS NEW
ENGLAND WITH MOST OF THE CLOUDS REMAINING WELL OFFSHORE AND HIGH
PRESSURE DOMINATING. AS A LOW PRESSURE CENTER STARTS TO RIDE UP AN
OFFSHORE FRONT, WE COULD START TO SEE AN INCREASE OF CLOUDS OVER
SOUTHERN AREAS OF THE REGION EITHER LATE TONIGHT OR EARLY WEDNESDAY
MORNING.
MOSTLY CLEAR SKIES THROUGH MOST OF THE NIGHT AND GENERALLY LIGHT
WINDS WILL LEAD TO SOME RADIATIONAL COOLING, ESPECIALLY ACROSS THE
NORTH. OVERNIGHT LOWS WILL FALL INTO THE MID TO UPPER 30S ACROSS THE
HIGHER TERRAIN OVER NORTHERN NEW HAMPSHIRE AND POSSIBLY INTO
PORTIONS OF FAR WESTERN MAINE. ELSEWHERE, EXPECT LOWS MAINLY IN THE
40S WITH SOME LOWER 50S POSSIBLE ACROSS COASTAL AREAS. SOME PATCHY
FROST WILL BE POSSIBLE IN THE NORTHERN NEW HAMPSHIRE VALLEYS, AND
VALLEY FOG WILL ONCE AGAIN BE LIKELY.
SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/
THE CENTER OF THE SURFACE HIGH WILL START TO SLIDE OFF TO THE
NORTHEAST ON WEDNESDAY AS THE AFOREMENTIONED LOW CONTINUES TO SLIDE
UP THE OFFSHORE FRONT. THE MAIN IMPACT FROM THIS LOW WILL GENERALLY
BE INCREASING CLOUDS BUT THERE WILL BE A LOW CHANCE (10 TO 20
PERCENT) FOR A FEW SCATTERED SHOWERS ALONG THE COASTAL AREAS OF NEW
HAMPSHIRE AND MAINE THROUGH THE AFTERNOON AND EVENING. PRECIPITATION
CHANCES AND CLOUDS WILL START TO DIMINISH AT NIGHT AS THE LOW MOVES
FURTHER OFF INTO THE ATLANTIC. LOWS MAY BE A TOUCH WARMER ON
WEDNESDAY NIGHT, MAINLY IN THE 40S WITH SOME 50S ALONG THE COAST.
LONG TERM /THURSDAY THROUGH TUESDAY/
IN SUMMARY, THE LONG-TERM FORECAST WILL BE HEAVILY INFLUENCED BY
HIGH PRESSURE AND A DRY AIRMASS, OFFERING LITTLE IF ANY IN THE
WAY OF PRECIPITATION CHANCES.
A SHORTWAVE TROUGH PUSHES A COLD FRONT THROUGH THE REGION ON
THURSDAY, WHICH MAY PRODUCE A FEW SHOWERS IN THE MOUNTAINS, BUT THE
AIRMASS LOOKS MUCH TOO DRY ELSEWHERE. HIGH TEMPERATURES WILL BE A
LITTLE WARMER THAN WEDNESDAY WITH MOST IN THE MID TO UPPER 70S, BUT
LOW 80S ARE POSSIBLE IN THE SOUTHERN NH AND CLOSER TO THE COAST.
BEHIND THIS FRONT, CANADIAN HIGH PRESSURE BUILDS RIGHT BACK IN WITH
GOOD RADIATIONAL COOLING LOOKING LIKELY FOR THURSDAY NIGHT. LOWS
ACROSS NORTHERN VALLEYS AND NORMALLY COLDER SPOTS COULD REACH THE
MID 30S WITH FROST POSSIBLE WHILE MOST OTHER PLACES SEE TEMPS IN
THE 40S.
THE HIGH PRESSURE WILL STAY PUT AND BRING DRY CONDITIONS FOR FRIDAY
AND SATURDAY WITH COOL NIGHTS AND HIGH TEMPERATURES IN THE UPPER 60S
TO LOW 70S. AN UPPER TROUGH WILL PUSH A COLD FRONT TOWARD NEW
ENGLAND SUNDAY, BUT THIS FRONT WILL OFFER LITTLE IF ANY IN THE WAY
OF RAIN CHANCES AS THE AIRMASS LOOKS QUITE DRY STILL.
GOING INTO NEXT WEEK, THE ECWMF CAMP IS MORE SUPPORTIVE OF CUTTING
OFF AN UPPER LOW IN THE VICINITY, WHICH WOULD BRING SOME CHANCES FOR
RAIN. THE GFS SIDE IS MORE PROGRESSIVE WITH THE TROUGH PUSHING RIGHT
THROUGH AND HIGH PRESSURE BUILDING BACK IN TO KEEP THINGS DRY. THE
LOW CHANCES OF 20% POP INTO EARLY NEXT WEEK WILL SUFFICE FOR
NOW DUE TO THE UNCERTAINTY.
AVIATION /17Z TUESDAY THROUGH SATURDAY/
SHORT TERM...VFR CONDITIONS AND LIGHT WINDS ARE GENERALLY
EXPECTED THROUGH THE SHORT TERM PERIOD. THE ONE EXCEPTION WILL
MAY BE OVER KLEB AND KHIE WHERE WE WILL LIKELY SEE SOME MORE
VALLEY FOG TONIGHT.
LONG TERM...MAINLY VFR CONDITIONS EXPECTED OTHER THAN IFR TO
LIFR NIGHTTIME/EARLY MORNING VALLEY FOG AT HIE AND LEB THURSDAY
THROUGH SUNDAY.
MARINE
SHORT TERM...WINDS AND SEAS TO REMAIN BELOW SCA CRITERIA THROUGH
THE PERIOD AS A SERIES OF HIGH PRESSURE SYSTEMS MOVE NEAR OR
OVER THE WATERS.
LONG TERM...SCA CONDITIONS ARE NOT EXPECTED. LOW PRESSURE
PASSES EAST OF THE WATERS THURSDAY SWITCHING WINDS FROM NORTH TO
NORTHWEST AND THEN NORTH TO NORTHEAST THURSDAY NIGHT AS
CANADIAN HIGH PRESSURE BUILDS IN. THE HIGH PRESSURE STAYS IN
CONTROL THROUGH SATURDAY WITH A FRONT POTENTIALLY APPROACHING
THE WATERS AROUND SUNDAY. HIGH PRESSURE ATTEMPTS TO RETURN EARLY
NEXT WEEK, BUT SOME MODEL GUIDANCE IS HINTING AT A LOW PRESSURE
SOMEWHERE ACROSS NEW ENGLAND. SO THE FORECAST FOR SUNDAY INTO
EARLY NEXT WEEK IS OF LOWER CONFIDENCE AT THIS TIME.
GYX WATCHES/WARNINGS/ADVISORIES
ME...NONE.
NH...NONE.
MARINE...NONE.
NEAR TERM...BARON/HARGROVE
SHORT TERM...BARON/HARGROVE
LONG TERM...COMBS
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