103
FXUS61 KGYX 212321
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
721 PM EDT WED OCT 21 2026
WHAT HAS CHANGED
VERY LITTLE CHANGE TO THE GOING FORECAST THIS WEDNESDAY EVENING.
KEY MESSAGES
1. HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER PATTERN
ACROSS NORTHERN NEW ENGLAND THROUGH THE WEEKEND WHILE AN OCEAN
STORM PASSES OFFSHORE. NORTHERLY GUSTS OF 30 TO 35 MPH POSSIBLE
LATER THURSDAY INTO FRIDAY.
DISCUSSION
KEY MESSAGE 1 DESCRIPTION...
IT WILL CONTINUE TO BE A PLEASANT LATE AFTERNOON AND EVENING
ACROSS THE REGION WITH TEMPERATURES QUICKLY COOLING AFTER
SUNSET. CIRRUS WILL GRADUALLY INCREASE FROM SOUTH TO NORTH
TONIGHT FROM A NOR'EASTER PASSING TO THE SE OF CAPE COD. GIVEN
THAT CIRRUS TYPICALLY DOES NOT HAVE A BIG IMPACT ON RADIATIONAL
COOLING AND THAT DEW POINTS ARE LOW, WENT AHEAD AND LOWERED NBM
FORECAST LOWS BY A FEW DEGREES. THIS COOLS SOME INTERIOR VALLEYS
INTO THE 20S/LOWER 30S WITH MIDDLE TO UPPER 30S ELSEWHERE. THE
WARMEST READINGS WILL BE ALONG THE COAST AS MIXING WILL LIKELY
LINGER LONGER INTO THE NIGHT.
HIGH PRESSURE WILL REMAIN OVER SOUTHERN QUEBEC ON THURSDAY INTO
THURSDAY NIGHT AS A DRY COLD FRONT CROSSES FROM THE NORTH AND
LOW PRESSURE PASSES WELL OFFSHORE. PARTLY TO MOSTLY SUNNY SKIES
WILL PREVAIL WITH HIGHS INTO THE LOWER 60S SOUTH OF THE MTNS
WITH 50S ACROSS THE NORTH. THE INCREASING PRESSURE GRADIENT
FORCE FROM THE OFFSHORE LOW AND HIGH CENTERED TO OUR NW WILL
ALLOW FOR INCREASING WINDS THROUGHOUT THE DAY WITH N GUSTS UP TO
30-35 MPH LIKELY FROM THURSDAY AFTERNOON THROUGH THE FIRST HALF
OF FRIDAY.
UPPER LOW/NOR'EASTER WILL CONTINUE TO MOVE NORTHEAST, WELL OUT TO
SEA. WITH PERSISTENT NORTHERLY FLOW ALOFT, EXPECT A CHILLY AND
BLUSTERY DAY ON FRIDAY WITH HIGHS MAINLY IN THE MID 40S TO MID 50S.
THE GUSTY WINDS WILL MAKE IT FEEL EVEN COLDER.
AS WINDS DIMINISH FRIDAY NIGHT, A MOSTLY CLEAR SKY SHOULD PROVE
OPTIMAL FOR RADIATIONAL COOLING AND VERY COLD TEMPERATURES. THE
LATEST NBM IS ADVERTISING LOWS IN THE 20S ACROSS THE ENTIRE FORECAST
AREA AND THIS MAY END UP BEING ON THE WARM SIDE DEPENDING ON THE
PRESENCE OF HIGH CLOUDS.
HIGH PRESSURE THEN DOMINATES THE WEATHER PATTERN THROUGH THE WEEKEND
AS AN UPPER LEVEL RIDGE NUDGES INTO THE REGION. THIS WILL LEAD TO A
GRADUAL WARMUP THROUGH THE WEEKEND AND INTO NEXT WEEK. HIGHS ON
SATURDAY SHOULD MAINLY BE BACK IN THE 50S WITH SOME 60S RETURNING
SUNDAY AND MONDAY. A COLD FRONT WILL SWEEP THROUGH ON MONDAY WHICH
WILL LEAD TO COOLER TEMPERATURES INTO MIDWEEK. AS OF NOW, THIS COLD
FRONT LOOKS TO BE DRY BUT WE COULD END UP SEEING SOME LOW
PRECIPITATION CHANCES AS WE MOVE CLOSER IN TIME.
AVIATION /00Z THURSDAY THROUGH MONDAY/
THROUGH THURSDAY: PATCHY FOG IS POSSIBLE IN THE
RIVER VALLEYS TONIGHT INTO THURSDAY MORNING. OTHERWISE, VFR
CONDITIONS PREVAIL WITH N WINDS OF 10-15 KTS. GUSTS WILL
INCREASE LATE THURSDAY THROUGH THE FIRST HALF OF FRIDAY WITH
GUSTS UP TO 30 KTS.
OUTLOOK...
THURSDAY: MOSTLY VFR. NORTHWEST WINDS MAY GUST 20-30 KT.
THURSDAY NIGHT-MONDAY...VFR PREVAILS. NORTHERLY GUSTS UP TO 30
KT THURSDAY NIGHT INTO FRIDAY MORNING.
MARINE
HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER PATTERN ACROSS
NEW ENGLAND, WHILE AN OCEAN STORM TRACKS OUTSIDE THE GULF OF
MAINE AND THROUGH THE GRAND BANKS THROUGH FRIDAY. SCA WINDS IN
NORTHEASTERLY FLOW LAST THROUGH AT LEAST FRIDAY, WHILE WAVES
LIKELY PERSIST INTO THE WEEKEND. NORTHERLY GALES ARE EXPECTED
OUTSIDE OF THE BAYS LATER THURSDAY INTO FRIDAY AS THE LOW
DEEPENS EAST OF THE WATERS. SEAS THEN GRADUALLY SUBSIDE THROUGH
THE WEEKEND AS HIGH PRESSURE REMAINS IN CONTROL.
GYX WATCHES/WARNINGS/ADVISORIES
ME...NONE.
NH...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 8 PM EDT THURSDAY FOR ANZ150-152-
154.
GALE WARNING FROM 8 PM THURSDAY TO 2 PM EDT FRIDAY FOR ANZ150-
152-154-180-182-184.
SMALL CRAFT ADVISORY FROM 8 PM THURSDAY TO 2 PM EDT FRIDAY FOR
ANZ151-153.
DISCUSSION...EKSTER/HARGROVE/TUBBS
AVIATION...
MARINE...
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page