705
FXUS61 KGYX 152233
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
633 PM EDT MON SEP 15 2025
SYNOPSIS
HIGH PRESSURE REMAINS IN PLACE ACROSS NEW ENGLAND THROUGH
THURSDAY. TEMPERATURES MODERATE THROUGH THE WEEK AND WITH
CONTINUED DRY WEATHER, DROUGHT CONDITIONS WILL DEEPEN. A COLD
FRONT MOVES THROUGH THURSDAY NIGHT. HIGH PRESSURE FOLLOWS FOR
THE WEEKEND, BRINGING A FRESH COLD AND DRY AIRMASS TO NEW
ENGLAND.
NEAR TERM /UNTIL 6 AM TUESDAY MORNING/
630 PM UPDATE...ANOTHER VERY PLEASANT EVENING IS UNDERWAY. IT
WILL CONTINUE INTO TONIGHT WITH RADIATIONAL FOG EXPECTED TO FORM
AFTER MIDNIGHT.
PREVIOUSLY...
SURFACE HIGH PRESSURE WILL REMAIN CENTERED OVER NEW ENGLAND
TONIGHT. HI RES GUIDANCES SUGGEST THAT IN ADDITION TO FOG IN THE
VALLEYS SOME PATCHY FOG WILL BE POSSIBLE ALONG THE COASTAL
PLAIN. LOWS TONIGHT WILL GENERALLY BE IN THE 40S TONIGHT.
SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/
HIGH PRESSURE REMAINS IN CONTROL TUESDAY INTO TUESDAY NIGHT AS A
CUT OFF LOW OVER THE MID ATLANTIC MAKES LITTLE PROGRESS
NORTHWARD. SKIES WILL BE MOSTLY SUNNY WITH LIGHT ONSHORE WINDS
DURING THE AFTERNOON. HIGHS WILL GENERALLY BE IN THE 70S WITH
SOME INTERIOR LOCATIONS MAKING A RUN INTO THE LOW 80S.
SOME MOISTURE ASSOCIATED WITH THE CUT OFF LOW SOUTH OF NEW
ENGLAND WILL SPILL INTO THE AREA TUESDAY NIGHT. THIS WILLY
RESULT INCREASING CLOUDS ACROSS THE SOUTH THE SECOND HALF OF THE
NIGHT. THERE LIKELY WILL BE ENOUGH RADIATIONAL COOLING BEFORE
THE ARRIVAL OF HIGH CLOUDS FOR VALLEY FOG AGAIN AND POSSIBLY
SOME MARINE FOG PUSHING INTO MID COAST. LOWS WILL AGAIN MAINLY
BE IN THE 40S.
LONG TERM /WEDNESDAY THROUGH MONDAY/
OVERVIEW...
HIGH PRESSURE REMAINS IN CONTROL ACROSS NEW ENGLAND THROUGH
THURSDAY, WHILE LOW PRESSURE REMAINS STALLED ALONG THE MID
ATLANTIC COAST. A COLD FRONT CROSSES THROUGH THURSDAY NIGHT.
HIGH PRESSURE BRINGS A COOL AIRMASS BEHIND THE FRONT FOR THE
WEEKEND.
DETAILS...
HIGH PRESSURE EXTENDS WESTWARD ACROSS NEW ENGLAND ON WEDNESDAY.
LOW PRESSURE STALLED ACROSS THE MID ATLANTIC BRINGS SOME MORE
CLOUD COVER ON WEDNESDAY, ESPECIALLY ACROSS SOUTHERN AREAS. A
STRAY SPRINKLE CAN'T BE RULED OUT ALONG THE COASTLINE, BUT
OFFERS NO RELIEF TO THE DROUGHT CONDITIONS.
THE LOW WEAKENS BY THURSDAY, BRINGING MORE SUNSHINE AND WARMER
TEMPERATURES TO NORTHERN NEW ENGLAND. THURSDAY LOOKS TO BE THE
WARMEST DAY OF THE WEEK, WITH HIGHS PUSHING INTO THE UPPER 70S
TO LOW 80S ACROSS THE AREA. A COLD FRONT APPROACHES DURING THE
DAYTIME, AND THEN CROSSES THROUGH NEW ENGLAND THURSDAY NIGHT.
THE FRONT WILL BE MOSTLY DRY, OFFERING LITTLE MORE THAT A FEW
SHOWERS ACROSS THE HIGHER TERRAIN.
HIGH PRESSURE BUILDS IN DURING THE DAYTIME ON FRIDAY BEHIND THE
FRONT. FRIDAY OFFERS ONE MORE SEASONABLY WARM DAY ALONG THE
COAST AS A NORTHWESTERLY BREEZE ALLOWS TEMPS TO WARM INTO THE
UPPER 70S AGAIN. FURTHER NORTH, CAA WILL BE UNDERWAY THROUGH THE
DAY, KEEPING HIGHS CONFINED TO THE LOW TO MID 60S.
THE AIR MASS ASSOCIATED WITH THE HIGH PRESSURE CENTER HAS
ORIGINS IN THE ARCTIC. THIS BRINGS A MUCH COOLER AND DRY AIRMASS
THE NEW ENGLAND FOR THE WEEKEND. HIGHS REMAIN IN THE 60S ON
SATURDAY, WITH SATURDAY NIGHT LIKELY TO BE THE COOLEST NIGHT OF
THE STRETCH. A WIDESPREAD FROST OR FREEZE REMAINS POSSIBLE
ACROSS MUCH OF THE INTERIOR SATURDAY NIGHT, BUT IS STILL
DEPENDENT ON THE HIGH PRESSURE CENTER CROSSING DURING THE
OVERNIGHT TIME FRAME, WHICH IS STILL SOMEWHAT UNCERTAIN.
WIDESPREAD LOW TO MID 30S LOOK LIKELY ACROSS MUCH OF THE
INTERIOR. SHOULD THE PASSING HIGH CENTER LINE UP FOR SATURDAY
NIGHT, UPPER 20S TO LOW 30S WOULD BE EXPECTED ACROSS THE
INTERIOR. WE'LL CONTINUE TO MONITOR THIS POTENTIAL OVER THE NEXT
FEW DAYS.
AVIATION /00Z TUESDAY THROUGH SATURDAY/
SHORT TERM...VALLEY FOG WILL BRING IFR TO LIFR CONDITIONS
TONIGHT AT KLEB AND KHIE AND LIKELY TO KCON. PATCHY FOG WILL
ALSO BE POSSIBLE AT REMAINING TAF SITES WHILE CONFIDENCE IS
LOWER. VFR PREVAILS TUESDAY WITH ANOTHER ROUND OF VALLEY FOG
LIKELY TUESDAY NIGHT. SOME MARINE FOG/LOW STRATUS MAY IMPACT
KAUG AND KRKD TUESDAY NIGHT.
LONG TERM...VFR PREVAILS DURING THE DAYTIME EACH DAY THROUGH
THE WEEKEND. NIGHTTIME VALLEY FOG IS LIKELY AND LEB AND HIE EACH
NIGHT, AND POSSIBLE ELSEWHERE. MARINE/RADIATION FOG WILL ALSO
BE POSSIBLE EACH NIGHT ALONG COASTAL TERMINALS WEDNESDAY NIGHT
AND AGAIN THURSDAY NIGHT.
MARINE
SHORT TERM...WINDS AND SEAS WILL REMAIN BELOW SCA THRESHOLDS
WITH HIGH PRESSURE OVER THE WATERS. LIGHT WINDS WILL TURN
ONSHORE TUESDAY AFTERNOON. SOME INCREASE IN MOISTURE MAY ALLOW
FOR SOME MARINE FOG TO DEVELOP TUESDAY NIGHT.
LONG TERM...HIGH PRESSURE PREVAILS ACROSS THE WATERS THROUGH
THURSDAY, WITH CONDITIONS REMAINING BELOW SCA LEVELS. A COLD
FRONT CROSSES THE WATERS LATE THURSDAY NIGHT AND EARLY FRIDAY,
WITH HIGH PRESSURE BUILDING IN BEHIND THE FRONT FOR THE WEEKEND.
A PERIOD OF MARGINAL SCA CONDITIONS ARE POSSIBLE IN
NORTHWESTERLY FLOW FRIDAY NIGHT.
GYX WATCHES/WARNINGS/ADVISORIES
ME...NONE.
NH...NONE.
MARINE...NONE.
SYNOPSIS...
NEAR TERM...EKSTER/SCHROETER
SHORT TERM...SCHROETER
LONG TERM...CLAIR
AVIATION...
MARINE...
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