059
FXUS61 KCAR 230018
AFDCAR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CARIBOU ME
818 PM EDT TUE SEP 22 2026
WHAT HAS CHANGED
- UPDATED AVIATION DISCUSSION.
KEY MESSAGES
1) POTENTIAL FOR FROST TONIGHT AND WEDNESDAY NIGHT ACROSS THE
NORTH.
2) A COASTAL LOW COULD IMPACT AT LEAST DOWNEAST MAINE LATE THIS
WEEK.
DISCUSSION
KEY MESSAGE 1...POTENTIAL FOR FROST TONIGHT AND WEDNESDAY NIGHT
ACROSS THE NORTH.
KEY MESSAGE 1 DESCRIPTION...
HIGH PRESSURE WILL CONTINUE TO BUILD IN THROUGHOUT THIS
AFTERNOON AND OVERNIGHT TONIGHT, RESULTING IN FAVORABLE
RADIATIONAL COOLING CONDITIONS AS LOW LYING VALLEYS DECOUPLE.
PATCHY/AREAS OF FROST AND FOG ARE EXPECTED TONIGHT AND AGAIN
WEDNESDAY NIGHT IN NORTHERN AREAS WITH TEMPERATURES DIPPING TO
NEAR AND BELOW FREEZING EACH NIGHT IN NORMALLY COLDER LOW LYING
AND VALLEY LOCATIONS.
KEY MESSAGE 2...A COASTAL LOW COULD IMPACT AT LEAST DOWNEAST
MAINE LATE THIS WEEK.
KEY MESSAGE 2 DESCRIPTION...
A COASTAL LOW IS EXPECTED TO DEVELOP ACROSS THE MID-ATLANTIC
REGION LATER THIS WEEK WHILE HIGH PRESSURE REMAINS CENTERED OVER
QUEBEC. THE TRACK OF THE OCEAN LOW IS STILL UNCERTAIN WITH
BLOCKING HIGH PRESSURE TO THE NORTHWEST OF OUR FORECAST AREA AND
RIDGING ACROSS THE GREAT LAKES. UNCERTAINTY REMAINS REGARDING
THE NORTHERN EDGE OF THE PRECIPITATION SHIELD AND WHETHER RAIN
WILL REACH DOWNEAST MAINE. NORTHERLY TO NORTHEASTERLY WINDS
COULD BECOME GUSTY OVER THE WEEKEND, ESPECIALLY ALONG THE COAST,
AS A TIGHT PRESSURE GRADIENT FORMS. GENERAL TREND CURRENTLY IS
THAT THE LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE SOUTHWARDS
DUE TO THE HIGH PRESSURE, WITH MAJORITY OF THE RAIN STAYING
OVER WATERS AND DOWNEAST REGION.
AVIATION /00Z WEDNESDAY THROUGH SUNDAY/
TONIGHT...VARIABLE CONDITIONS IN ANY PATCHY FOG LATE.
OTHERWISE, VFR. LIGHT NORTH/NORTHEAST WINDS.
WEDNESDAY-THURSDAY NIGHT...VARIABLE CONDITIONS IN ANY PATCHY
LATE NIGHT FOG, OTHERWISE VFR. NORTH/NORTHEAST WINDS 5 TO 10
KNOTS.
FRIDAY-SUNDAY...VFR NORTH. VFR/MVFR DOWNEAST WITH A CHANCE OF
RAIN. ACROSS NORTHERN AREAS, NORTHEAST/NORTH WINDS 5 TO 10
KNOTS, BECOMING NE SUNDAY. ACROSS DOWNEAST AREAS, NORTHEAST/NORTH
WINDS 10 TO 15 KNOTS WITH GUSTS UP TO AROUND 20-25 KNOTS AT
KBGR, AND 30 KNOTS POSSIBLE AT KBHB SATURDAY AND SUNDAY
AFTERNOON.
MARINE
WINDS WILL BE BELOW SCA LEVELS THIS AFTERNOON AND TONIGHT
BEFORE INCREASING OUT OF THE NORTHEAST WITH GUSTS 25-30KTS OVER
THE OUTER WATERS EARLY WEDNESDAY MORNING INTO THE AFTERNOON.
SEAS WILL RANGE FROM 2-3 FEET OVER THE INTRACOASTAL AND COASTAL
OCEAN WATERS TODAY WITH 4-5 FEET EXPECTED OVER THE OUTER WATERS
THROUGH THE DAY ON WEDNESDAY. GALES POSSIBLE OVER WATERS LATE
WEEK INTO THE WEEKEND. BUILDING SEAS LATE WEEK INTO THE WEEKEND,
WITH OUTER-WATERS REACHING UP TO 11FT POSSIBLE THIS WEEKEND,
AND UP TO 15FT OVER 25-60NM WATERS.
CAR WATCHES/WARNINGS/ADVISORIES
ME...NONE.
MARINE...NONE.
DISCUSSION...ASB/JS
AVIATION...ASB/JS/CN
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