348
FXUS61 KGYX 130248
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
1048 PM EDT FRI SEP 12 2025
SYNOPSIS
HIGH PRESSURE SLIDES SOUTHEAST ACROSS NEW ENGLAND TONIGHT INTO
SATURDAY. A WEAK COLD FRONT APPROACHES SATURDAY NIGHT 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 /UNTIL 6 AM SATURDAY MORNING/
1045PM UPDATE...MAINLY SOME CHECKS ON THIS EVENING'S TEMPERATURE
TRENDS. COUPLE ISOLATED SPOTS ARE A HANDFUL OF DEGREES COOLER
THAN THIS TIME LAST NIGHT, AND HAVE ADJUSTED FOR THIS. CIRRUS IS
PRESENT ACROSS THE NORTH AND IS STRUGGLING TO MAKE IT FURTHER
SOUTH IN DRY AIR. EVENING 00Z SOUNDING MADE THE DRY AIR QUITE
APPARENT. HAVEN'T VENTURED TOO FAR FROM PREVIOUS FCST LOWS
TONIGHT, BUT DID ADJUST COOLING FOR THE NEXT COUPLE HOURS.
PREVIOUS DISCUSSION...
QUIET WEATHER CONTINUES FOR THE REST OF THE DAY WITH PLENTY OF
SUNSHINE, LOW HUMIDITY, AND TEMPS IN THE 70S. LOOKING UPSTREAM,
LATEST VISIBLE SATELLITE IMAGERY SHOWS QUITE A BIT OF HIGH CLOUDS
ASSOCIATED WITH AN UPPER DISTURBANCE, AND THESE CLOUDS MAY
EVENTUALLY LEVEL OFF COOLING ACROSS THE NORTH TONIGHT, BUT
OTHERWISE CONDITIONS WILL BE FAVORABLE FOR RADIATIONAL COOLING.
LOWS WILL BE AGAIN PRIMARILY IN THE 40S BUT A FEW NORTHERN
VALLEYS MAY STILL BE ABLE TO REACH THE MID TO UPPER 30S WITH
PATCHY FROST POSSIBLE. VALLEY FOG IS AGAIN LIKELY IN SOME AREAS.
SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/
SATURDAY WILL BE ANOTHER DAY FEATURING TEMPERATURES IN THE 70S AND
COMFORTABLE HUMIDITY LEVELS. THERE WILL BE MORE CLOUD COVER THOUGH
AS HIGH PRESSURE CONTINUES TO SHIFT TO THE EAST AS A SHORTWAVE
TROUGH QUICKLY CROSSES THE REGION. MOISTURE DEPTH AND MUCAPE MAY BE
JUST ENOUGH FOR A FEW SHOWERS TO DEVELOP IN THE AFTERNOON, BUT MOST
WILL NOT SEE ANY RAINFALL.
MOSTLY DRY WEATHER PERSISTS THROUGH SATURDAY NIGHT WITH
TEMPERATURES NOT AS COOL THANKS TO LIGHT LOW-LEVEL SOUTHERLY
FLOW. LOWS WILL BE IN THE 40S AND 50S WITH PATCHY FOG POSSIBLE.
LONG TERM /SUNDAY THROUGH FRIDAY/
A NORTHERN STREAM WAVE CROSSING CANADA WILL SEND A WEAK COLD FRONT
THROUGH THE AREA SUNDAY. THIS FRONT WILL BRING THE CHANCES FOR
SCATTERED SHOWERS AND PERHAPS A THUNDERSTORM WHILE WIDESPREAD
WETTING RAINFALL IS UNLIKELY. 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.
THE BEST CHANCE FOR SOME RAINFALL DURING THE PERIOD WILL OCCUR
SUNDAY AS A WEAK FRONT CROSSES THE AREA. AVAILABLE CAM GUIDANCE
SUGGEST THE FRONT WILL BRING WIDELY SCATTERED SHOWERS AT BEST
WITH MUCH OF THE AREA LIKELY TO MISS OUT ON ANY MEASURABLE
RAINFALL. HIGHS ON SUNDAY WILL RANGE FROM THE UPPER 60S NORTH TO
UPPER 70S SOUTH.
HIGH PRESSURE BUILDS IN BEHIND THE 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 /03Z SATURDAY THROUGH WEDNESDAY/
SHORT TERM...MOSTLY VFR THROUGH SATURDAY NIGHT. VALLEY FOG
WILL LIKELY OCCUR AGAIN TONIGHT AT HIE AND LEB, POSSIBLY AT CON
AND AUG AS WELL. A FEW SHOWERS MAY DEVELOP SATURDAY AFTERNOON,
BUT CHANCES ARE TOO LOW FOR TAF INCLUSION AT THIS TIME. PATCHY
FOG IS POSSIBLE SATURDAY NIGHT AND MAY BRING RESTRICTIONS BEYOND
LEB AND HIE.
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 ARE EXPECTED TO STAY BELOW SCA
LEVELS THROUGH SATURDAY NIGHT. HIGH PRESSURE OVER THE WATERS
WILL SLIDE TO THE EAST THROUGH TONIGHT AND SATURDAY AS WEAK LOW
PRESSURE APPROACHES RESULTING IN A PREVAILING SOUTHERLY WIND
FLOW.
LONG TERM...WINDS AND SEAS STAY BELOW SCA THRESHOLDS THROUGH THE
PERIOD. A WEAK FRONT CROSSES THE WATERS SUNDAY BRINGING A WINDS
SHIFT OUT OF THE NORTH SUNDAY NIGHT. HIGH PRESSURE THEN BUILDS
OVER THE WATERS FOR LIGHT ONSHORE WINDS DURING THE DAY TIME.
GYX WATCHES/WARNINGS/ADVISORIES
ME...NONE.
NH...NONE.
MARINE...NONE.
NEAR TERM...COMBS/CORNWELL
SHORT TERM...COMBS
LONG TERM...SCHROETER
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