147
FXUS61 KCAR 091126
AFDCAR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CARIBOU ME
726 AM EDT TUE SEP 9 2025
SYNOPSIS
HIGH PRESSURE BUILDS OVER THE AREA TODAY, THEN SLOWLY EXITS INTO
THE SOUTHERN MARITIMES THROUGH WEDNESDAY. A COLD FRONT WILL
CROSS THE REGION WEDNESDAY NIGHT THROUGH THURSDAY. HIGH PRESSURE
WILL CROSS THE REGION FRIDAY, THEN BEGIN TO EXIT ACROSS THE
MARITIMES SATURDAY.
NEAR TERM /THROUGH WEDNESDAY/
725 AM UPDATE...
LOW STRATUS OVER THE NORTHWEST PREVENTED TEMPS FM DROPPING
EARLY THIS MORNING. ADJUSTED GRIDS TO ACCOUNT FOR MOCLDY SKIES
FOR THE NEXT HOUR OR TWO BEFORE SCATTERING OUT. SMOKE CAN BE
SEEN ON VIS IMAGERY WORKING IT/S WAY IN FROM CANADA.
PREV DISCUSSION BLO...
LOW TEMPERATURES EARLY THIS MORNING IN THE MID-30S, WITH PATCHY
FROST DEVELOPING IN COLD SPOTS IN NORTHERN MAINE. LIGHT WINDS
AND HIGH LOW-LEVEL MOISTURE RESULTS IN SOME VALLEY FOG THIS
MORNING AS WELL, WHICH WILL BURN OFF AS SUN RISES.
TODAY, SURFACE HIGH PRESSURE AROUND LINGERS IN MAINE RESULTING
IN RELATIVELY CLEAR SKIES AND DRY WEATHER. HRRR SMOKE MODEL DOES
INDICATE A POTENTIAL FOR SOME WILDFIRE SMOKE TO MAKE ITS WAY
INTO NORTHERN MAINE TODAY, BUT WILL STAY ELEVATED AND NOT CAUSE
VISIBILITY ISSUES. DID CUT TEMPERATURES BACK A LITTLE IN THE
NORTH TO ACCOUNT FOR SMOKE ACTING AS A CIRRUS SHIELD. FORECAST
DAYTIME HIGHS IN THE MID-60S IN THE NORTH, AND LOW-70S DOWNEAST.
LIGHT WINDS, BUT ALSO LOW RELATIVE HUMIDITY VALUES IN THE 30-40%
RANGE, WHICH CONTINUES TO BE A CONCERN FOR FIRE WEATHER
PURPOSES. OVERNIGHT, HIGH PRESSURE SLIDES OUT TO THE ATLANTIC,
AND A COASTAL LOW PRESSURE SYSTEM STARTS TO MOVE NORTHEAST FROM
DOWN BY THE CAROLINAS. WINDS LIGHT AGAIN, AND THERE IS A CHANCE
FOR SOME RIVER VALLEY FOG IN LOW-LYING AREAS.
ON WEDNESDAY, HIGH PRESSURE AGAIN AT THE SURFACE, AS
AFOREMENTIONED COASTAL LOW-PRESSURE SYSTEM DOWN BY THE COAST
MOVES NORTHEAST BY THE GULF OF MAINE. PRECIPITATION REACHING
COASTAL ZONES IS HEAVILY GOING TO DEPEND ON THE TRACK OF THIS
LOW-PRESSURE SYSTEM, BUT CURRENT GUIDANCE INDICATES THAT THE
IMMEDIATE COASTLINE AND WATERS COULD SEE SOME RAIN SHOWERS
WEDNESDAY EVENING. SKIES MOSTLY CLEAR IN THE NORTH, AND OVERCAST
ALONG THE COAST. DAYTIME HIGHS IN THE LOW-70S.
SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/
HIGH PRESSURE REMAINS RIDGED ACROSS THE REGION WEDNESDAY NIGHT WHILE
LOW PRESSURE TRACKS SOUTHEAST OF THE GULF OF MAINE AND A COLD FRONT
REACHES NORTHERN MAINE. THE NORTHWEST EDGE OF THE PRECIPITATION
SHIELD WITH THE OCEAN LOW COULD CLIP THE DOWNEAST COAST WITH A
SLIGHT CHANCE OF SHOWERS EARLY WEDNESDAY NIGHT. OTHERWISE, EXPECT
MOSTLY CLEAR/PARTLY CLOUDY SKIES ACROSS THE FORECAST AREA WEDNESDAY
NIGHT. THE COLD FRONT, WITH LIMITED MOISTURE, WILL CROSS THE REGION
THURSDAY. EXPECT PARTLY SUNNY SKIES WITH ONLY A SLIGHT CHANCE OF
SHOWERS ACROSS NORTHERN AREAS THURSDAY, WITH MOSTLY SUNNY SKIES
DOWNEAST. HIGH PRESSURE BUILDS ACROSS THE FORECAST AREA THURSDAY
NIGHT INTO FRIDAY WITH MOSTLY CLEAR SKIES. EXPECT SLIGHTLY BELOW
NORMAL LEVEL TEMPERATURES NORTH THURSDAY, WITH NEAR NORMAL LEVEL
TEMPERATURES DOWNEAST. SLIGHTLY BELOW NORMAL LEVEL TEMPERATURES
ARE EXPECTED REGIONWIDE FRIDAY.
LONG TERM /FRIDAY NIGHT THROUGH MONDAY/
HIGH PRESSURE REMAINS ACROSS THE REGION FRIDAY NIGHT WITH MOSTLY
CLEAR SKIES. HIGH PRESSURE BEGINS TO EXIT ACROSS THE MARITIMES
SATURDAY THROUGH SATURDAY NIGHT WHILE STILL RIDGING BACK ACROSS
THE FORECAST AREA. EXPECT PARTLY SUNNY SKIES NORTH, MOSTLY
SUNNY DOWNEAST, SATURDAY. UNCERTAINTY INCREASES SATURDAY NIGHT
INTO SUNDAY NIGHT REGARDING THE LOCATION OF UPPER LEVEL LOW
PRESSURE. GENERALLY EXPECT PARTLY CLOUDY SKIES SATURDAY NIGHT
THROUGH SUNDAY NIGHT. DUE TO THE UNCERTAINTY HAVE ONLY INCLUDED
A SLIGHT CHANCE OF SHOWERS. HOWEVER, A MORE EASTERLY LOCATED
UPPER LOW COULD LEAD TO MORE EXTENSIVE CLOUD COVER AND SHOWER
CHANCES. HIGH PRESSURE SHOULD RETURN MONDAY WITH MOSTLY/PARTLY
SUNNY SKIES. NEAR NORMAL, TO SLIGHTLY BELOW NORMAL, LEVEL
TEMPERATURES ARE EXPECTED SATURDAY THROUGH MONDAY.
AVIATION /12Z TUESDAY THROUGH SATURDAY/
NEAR TERM: VFR NEXT 24 HOURS, THOUGH CANNOT RULE OUT PATCHY FOG
AT PQI AND HUL TOWARD END OF TAF VALID TIME.
SHORT TERM:
WEDNESDAY NIGHT...VFR. A SLIGHT CHANCE OF SHOWERS DOWNEAST
EARLY. VARIABLE WINDS 5 TO 10 KNOTS.
THURSDAY...VFR. SLIGHT CHANCE OF SHOWERS NORTH. NORTH/NORTHWEST
WINDS 10 TO 15 KNOTS.
THURSDAY NIGHT THROUGH SATURDAY...VFR. NORTH/NORTHWEST WINDS 5
TO 10 KNOTS THURSDAY NIGHT. VARIABLE WINDS 5 TO 10 KNOTS FRIDAY
THROUGH FRIDAY NIGHT. SOUTH/SOUTHEAST WINDS 5 TO 10 KNOTS
SATURDAY.
MARINE
NEAR TERM: WINDS AND SEAS BELOW SMALL CRAFT CRITERIA IN THE
NEAR TERM PERIOD. SEAS GENERALLY 3 FT OR BELOW OVER ALL WATERS.
SLIGHT CHANCE FOR SOME FOG OVER THE WATERS TONIGHT. POTENTIAL
FOR SOME RAIN SHOWERS TO APPROACH DURING THE DAY OF WEDNESDAY.
WINDS 5-10 KTS FROM THE NE, SHIFTING TO THE E OVERNIGHT, AND
BACK TO THE NE BY WEDNESDAY.
SHORT TERM: WINDS/SEAS BELOW SMALL CRAFT ADVISORY LEVELS
WEDNESDAY NIGHT THROUGH FRIDAY. A CHANCE OF RAIN OR SHOWERS
EARLY WEDNESDAY NIGHT.
CAR WATCHES/WARNINGS/ADVISORIES
ME...FROST ADVISORY UNTIL 8 AM EDT THIS MORNING FOR MEZ001>006.
MARINE...NONE.
NEAR TERM...BRENNAN/BUSTER
SHORT TERM...NORCROSS
LONG TERM...NORCROSS
AVIATION...BRENNAN/BUSTER/NORCROSS
MARINE...BRENNAN/BUSTER/NORCROSS
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