575
FXUS61 KCAR 220543
AFDCAR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CARIBOU ME
143 AM EDT TUE SEP 22 2026
WHAT HAS CHANGED
NO SIGNIFICANT CHANGES.
KEY MESSAGES
1) POTENTIAL FOR PATCHY 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 PATCHY FROST TONIGHT AND WEDNESDAY NIGHT
ACROSS THE NORTH.
KEY MESSAGE 1 DESCRIPTION...
HIGH PRESSURE BUILDING INTO THE AREA THIS MORNING MAY LEAD TO
FAVORABLE RADN/L COOLING CONDITIONS AS LOW LYING VALLEYS
DECOUPLE. PATCHY/AREAS OF FROST ARE EXPECTED TONIGHT AND AGAIN
WEDNESDAY NIGHT WITH TEMPERATURES DIPPING TO NEAR/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 MAINE. NORTHERLY TO NORTHEASTERLY WINDS COULD BECOME
GUSTY OVER THE WEEKEND, ESPECIALLY ALONG THE COAST, AS A TIGHT
PRESSURE GRADIENT FORMS.
AVIATION /06Z TUESDAY THROUGH SATURDAY/
THROUGH 12Z TUESDAY...VFR, THOUGH MAY SEE BRIEF MVFR AT PQI AND
HUL BETWEEN 07-11Z WITH CALM WINDS. ELSEWHERE N WINDS 5-10 KTS.
TODAY...VFR. NORTH/NORTHWEST WINDS 5 TO 10 KNOTS.
TONIGHT-THURSDAY NIGHT...VARIABLE CONDITIONS IN ANY PATCHY LATE
NIGHT FOG. OTHERWISE, VFR. NORTH/NORTHEAST WINDS 5 TO 10 KNOTS.
FRIDAY-SATURDAY...VFR NORTH. VFR/MVFR DOWNEAST WITH A CHANCE OF
RAIN. ACROSS NORTHERN AREAS, NORTHEAST/NORTH WINDS 5 TO 10
KNOTS. ACROSS DOWNEAST AREAS, NORTHEAST/NORTH WINDS 10 TO 15
KNOTS WITH GUSTS UP TO AROUND 20 KNOTS.
MARINE
WINDS WILL BE BELOW SCA LEVELS TODAY 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 ALL BUT THE
INTRACOASTAL LATE WEEK INTO THE WEEKEND. BUILDING SEAS LATE
WEEK INTO THE WEEKEND.
CAR WATCHES/WARNINGS/ADVISORIES
ME...NONE.
MARINE...NONE.
DISCUSSION...21/JMM
AVIATION...21/JMM
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