184
FXUS61 KGYX 041902
AFDGYX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
302 PM EDT THU JUN 4 2026
WHAT HAS CHANGED
HEAT CONTINUES TO BE THE MAIN TOPIC THROUGH THE END OF THE WEEK.
SOME CHANGES WERE MADE TO DAYTIME TEMPERATURE TRENDS ALONG THE
COAST WHERE A SEABREEZE WILL KEEP TEMPERATURES COOLER THAN
INLAND LOCATIONS.
KEY MESSAGES
1. HEAT PERSISTS AREAWIDE THROUGH FRIDAY, WITH SOUTHERN
LOCATIONS LINGERING INTO SATURDAY. DAYTIME HIGHS WILL PEAK IN
THE 80S TO AROUND 90 DEGREES, BUT HUMIDITY WILL BE LOW, LIMITING
EXCESSIVE HEAT IMPACTS.
2. A SLOW MOVING FRONT BRINGS ROUNDS OF SHOWERS AND STORMS
INTO THE REGION THROUGH THE WEEKEND.
3. AFTER A BRIEF COOL DOWN EARLY NEXT WEEK, TEMPERATURES
REBOUND AGAIN BY MIDWEEK.
DISCUSSION
KEY MESSAGE 1 DESCRIPTION...
FORECAST REMAINS ON TRACK FOR PERSISTENT WARMTH AREAWIDE
THROUGH FRIDAY. HIGHS ARE FORECAST TO RUN 10 TO 15 DEGREES ABOVE
NORMAL, TOPPING OUT IN THE MID TO UPPER 80S, TO AROUND 90 IN A
FEW INTERIOR ME LOCATIONS AND SOUTHERN NH. HIGHER DEWPOINT TEMPS
WON'T ACCOMPANY THIS AIRMASS, WITH RESULTING HUMIDITY NOT AS
HEAVY AS LATER SUMMER HEAT EPISODES.
LOW LEVEL WINDS LOOK TO REMAIN LIGHT, AND WILL LIKELY SEE SOME
IMPACT FROM A COOLER, MORE HUMID, SEABREEZE DURING THE
AFTERNOONS TODAY AND FRIDAY. THIS LOOKS TO ENCOMPASS MUCH OF THE
MIDCOAST, WITH LESS INTRUSION FROM PORTLAND SOUTH.
OVERNIGHT LOWS, AMID MOSTLY CLEAR SKIES AND CALM WINDS, SHOULD
BE ALLOWED TO RADIATE WELL. BUT INTO JUNE HERE, WE ARE SEEING
MORE DAYLIGHT, AND THE OVERALL WINDOW FOR OVERNIGHT COOLING
SHORTENS. LOWS IN THE 50S SHOULD BRING AMPLE RECOVERY BETWEEN
THE OTHERWISE ABOVE NORMAL HIGHS.
AS MOISTURE ADVECTS THROUGH THE NORTHERN PORTION OF THE SURFACE
HIGH, COULD SEE ISOLATED TO SCATTERED SHOWERS DEVELOP TOWARDS
CENTRAL MAINE FRIDAY AFTERNOON. WARM AIR ALOFT SHOULD CAP HOW
DEEP CONVECTION GETS, THUS THINK LIGHTNING MAY BE LARGELY
ABSENT. DEPENDENT ON DAYTIME INSTABILITY, EXPECT THESE TO
WEAKEN AND SHIFT EAST BY EARLY FRI EVENING.
KEY MESSAGE 2 DESCRIPTION...
ANOTHER VERY WARM DAY IS EXPECTED ON SATURDAY ACROSS SOUTHERN
AREAS AS TEMPERATURES PUSH INTO THE UPPER 80S TO LOW 90S.
HOWEVER, A COLD FRONT WILL PUSH SOUTHWARD THROUGH THE DAYTIME ON
SATURDAY, BRINGING SHOWERS AND SOME THUNDERSTORMS INTO NORTHERN
AREAS BY THE LATE MORNING HOURS. THIS KEEPS HIGHS IN THE 70S
ACROSS THE NORTH, WITH LOW TO MID 80S GENERALLY EXPECTED IN
BETWEEN. CENTRAL MAINE AND THE MIDCOAST WILL LIKELY ALSO HOLD IN
THE 70S AS ONSHORE FLOW AND CLOUD COVER INCREASES.
THE SHOWERS AND STORMS MAKE GRADUAL PROGRESS SOUTHWARD THROUGH
THE DAYTIME, BUT ALSO BECOME MORE SCATTERED THE FURTHER SOUTH
THEY EXTEND. SO FOR SOUTHERN AND COASTAL AREAS, MOST OF THE DAY
LOOKS DRY AND WARM, FOLLOWED BY AN INCREASED CHANCE FOR SHOWERS
AND STORMS IN THE AFTERNOON HOURS.
THE FRONT CONTINUES TO ONLY SLOWLY PROGRESS THROUGH NORTHERN
NEW ENGLAND SATURDAY NIGHT AND SUNDAY, WITH A WAVE OF LOW
PRESSURE LIKELY TO FORM ALONG THE FRONT AS THE TROUGH DEEPENS
ACROSS THE AREA. THIS COOLING ALOFT BRINGS A BETTER CHANCE FOR
MORE WIDESPREAD ROUNDS OF SHOWERS AND SOME THUNDERSTORMS TO
INTERIOR AND COASTAL AREAS ON SUNDAY. MEANWHILE, NORTHERN AREAS
STAND THE BEST CHANCE TO DRY OUT FOR THE SECOND HALF OF THE DAY
AS THE FRONT SAGS SOUTHWARD, THOUGH ISOLATED POP UP SHOWERS
WOULD STILL BE POSSIBLE. A SHARP TEMPERATURE DIVIDE IS LIKELY
ACROSS THE FORECAST AREA BY SUNDAY AFTERNOON, WITH HIGHS IN THE
MID 60S BEHIND THE FRONT ACROSS THE NORTH, WHILE SOUTHERN NEW
HAMPSHIRE WARMS INTO THE MID 80S.
SHOWERS AND STORMS THEN QUICKLY DISSIPATE AFTER SUNSET ON SUNDAY AS
THE FRONT MOVES OFF TO THE SOUTH.
KEY MESSAGE 3 DESCRIPTION...
HIGH PRESSURE BUILDS INTO THE AREA ON MONDAY, BRINGING WITH IT
A SEASONABLY COOL AND DRY AIRMASS. HIGH TEMPERATURES LOOK TO TOP
OUT AT A COMFORTABLE LOW TO MID 70S WITH LOW HUMIDITY AND
MAINLY SUNNY SKIES. SOME HIGH CLOUDS LIKELY BRING SOME FILTERED
SUNSHINE THROUGH THE DAY AS THE WESTERN PERIPHERY OF THE TROUGH
SLOWLY MOVES AWAY FROM NEW ENGLAND.
HIGH PRESSURE GRADUALLY DRIFTS SOUTHWARD WHILE A RIDGE PUMPS
INTO THE NORTHEAST US AND EASTERN CANADA. THIS BRINGS WITH IT A
MODERATING TREND INTO MIDWEEK, WITH WIDESPREAD HIGHS IN THE MID
80S BY WEDNESDAY. THE GREATEST HEIGHT ANOMALIES ASSOCIATED WITH
THE RIDGE LOOK TO BE POSITIONED TO THE NORTHWEST OF NEW ENGLAND
THROUGH QUEBEC AND ONTARIO. THIS BRINGS THE WARMEST ANOMALIES
INTO NORTHERN AREAS FOR AT LEAST A COUPLE DAYS NEXT WEEK. IT
ALSO PRESENTS THE OPPORTUNITY FOR A BACKDOOR COLD FRONT BY LATE
WEEK.
ALL THIS REALLY MEANS IS THAT TEMPERATURES LOOK RELATIVELY WARM
AND UNIFORM FOR MIDWEEK NEXT WEEK, WITH WIDESPREAD MID 80S
ACROSS MOST OF THE AREA, AND THE MOST ABOVE NORMAL TEMPS ACROSS
NORTHERN AND WESTERN AREAS.
AVIATION /18Z THURSDAY THROUGH TUESDAY/
THROUGH 18Z FRIDAY...VFR WITH NO SIG WX. COASTAL TERMINALS WILL
SEE ONSHORE AFTERNOON SEABREEZE TODAY AND FRIDAY, WITH INLAND
TERMINALS MAINLY SW...BECOMING LIGHT AND VARIABLE AT NIGHT. A
FEW SHRA POSSIBLE TOWARDS CENTRAL ME FRIDAY AFTERNOON,
DISSIPATING IN THE EVENING.
OUTLOOK:
FRIDAY NIGHT: VFR. NO SIG WX.
SATURDAY: SHOWERS AND STORMS SPREAD FROM NORTHWEST TO THE COAST FROM
MID MORNING THROUGH THE LATE AFTERNOON, BRINGING RESTRICTIONS AT
TIMES.
SATURDAY NIGHT - SUNDAY: SHOWERS AND A FEW THUNDERSTORMS WITH MVFR
TO IFR.
SUNDAY NIGHT - WEDNESDAY: MAINLY VFR PREVAILS, BUT SOME NIGHTTIME
VALLEY FOG WILL BE POSSIBLE AT HIE AND LEB EACH NIGHT.
MARINE
HIGH PRESSURE TOWARDS THE OHIO VALLEY MAINTAINS INFLUENCE OVER
THE WATERS THROUGH FRIDAY LEADING TO GUSTS 10 TO 15 KTS AND WAVE
HEIGHTS 1 TO 3 FT.
SOME MARGINAL SCA CONDITIONS ARE POSSIBLE AHEAD OF A COLD FRONT
IN SOUTHERLY FLOW LATE SATURDAY THROUGH SUNDAY, AND THEN AGAIN
IN NORTHERLY FLOW BEHIND THE FRONT SUNDAY NIGHT INTO MONDAY.
BROAD HIGH PRESSURE BUILDS ACROSS THE WATERS ON MONDAY, AND
SETTLES IN THROUGH MIDWEEK.
GYX WATCHES/WARNINGS/ADVISORIES
ME...BEACH HAZARDS STATEMENT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING FOR MEZ023>028.
NH...BEACH HAZARDS STATEMENT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING FOR NHZ014.
MARINE...NONE.
DISCUSSION...CLAIR/CORNWELL
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