016
FXUS61 KCAR 201820
AFDCAR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CARIBOU ME
220 PM EDT SUN SEP 20 2026
WHAT HAS CHANGED
- UPDATED AVIATION DISCUSSION.
KEY MESSAGES
1) POTENTIAL FOR PATCHY FROST BOTH MONDAY AND TUESDAY 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 BOTH MONDAY AND TUESDAY NIGHT ACROSS
THE NORTH.
KEY MESSAGE 1 DESCRIPTION...
STRONG CANADIAN HIGH PRESSURE BUILDS INTO THE REGION MONDAY
NIGHT. WITH MOSTLY CLEAR SKIES AMD LIGHT WINDS DURING THE
OVERNIGHT HOURS, RADIATIONAL COOLING CONDITIONS ARE POSSIBLE IN
THE NORTH. THIS COULD WILL RESULT IN PATCHY FROST. THE FROST
WILL BE LIMITED TO THE NORTH DUE TO AMPLE CLOUD COVER ELSEWHERE,
WITH BEST CONDITIONS IN THE LOW LYING COLD VALLEYS.
HIGH PRESSURE WILL BE RIDGED ACROSS THE REGION TUESDAY NIGHT WITH
CLEAR SKIES AND LIGHT WINDS. THIS WILL PROVIDE FAVORABLE CONDITIONS
FOR RADIATIONAL COOLING. PATCHY/AREAS OF FROST ARE EXPECTED TUESDAY
NIGHT ACROSS NORTHERN AND CENTRAL PORTIONS OF THE REGION.
TEMPERATURES COULD FALL BELOW FREEZING ACROSS THE NORMALLY
COLDER NORTHERN LOW LYING AND VALLEY LOCATIONS.
KEY MESSAGE 2...
A COASTAL LOW COULD IMPACT AT LEAST DOWNEAST MAINE LATE THIS
WEEK.
KEY MESSAGE 2 DESCRIPTION...
AN OCEAN LOW WILL DEVELOP OFFSHORE FROM THE MID-ATLANTIC REGION
MID WEEK. AT THE SAME TIME, HIGH PRESSURE WILL REMAIN CENTERED
NORTHWEST OF THE REGION. THE TRACK OF THE OCEAN LOW THROUGH LATE
WEEK IS STILL UNCERTAIN. WITH BLOCKING HIGH PRESSURE TO THE
NORTHWEST, UNCERTAINTY STILL EXISTS REGARDING THE NORTHERN EDGE
OF THE PRECIPITATION SHIELD AND WHETHER RAIN WILL REACH THE
FORECAST AREA.
AVIATION /18Z SUNDAY THROUGH FRIDAY/
TODAY...GENERALLY VFR, BECOMING MVFR AS LOWER CEILINGS AND RAIN
SHOWERS MOVE INTO THE DOWNEAST TERMINALS. S WINDS 10-15KTS WITH
GUSTS UP TO AROUND 20KTS.
TONIGHT...MVFR/IFR, OCCASIONAL LIFR. A CHANCE OF SHOWERS AT ALL
TERMINALS, ALONG WITH PATCHY FOG. S WINDS 5-10 KTS, BECOMING
W/NW.
MONDAY...MVFR/IFR EARLY IN PATCHY FOG, BEFORE LIFTING TO VFR
AFTER SUNRISE. NW 5-10KTS, GUSTING TO 15-20KTS IN THE AFTERNOON.
MONDAY NIGHT...VFR. NW WINDS IN THE NORTH AT 5-10KTS, WITH N
WINDS 5-10KTS IN THE DOWNEAST AND BANGOR REGION.
TUESDAY-THURSDAY NIGHT...VARIABLE CONDITIONS IN ANY PATCHY LATE
NIGHT FOG. OTHERWISE, VFR. NORTH/NORTHEAST WINDS 5 TO 10 KNOTS.
FRIDAY...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
SEAS AND WINDS REMAIN BELOW SCA LEVELS OVER ALL WATERS THROUGH
MONDAY NIGHT. PATCHY FOG AND RAIN SHOWERS REDUCING VISIBILITIES
POSSIBLE TONIGHT. S WINDS TODAY, BECOMING LIGHT AND VARIABLE
OVERNIGHT. BECOME N ON MONDAY.
SMALL CRAFT ADVISORY LEVEL WIND GUSTS POSSIBLE WEDNESDAY.
BUILDING SEAS LATE WEEK.
CAR WATCHES/WARNINGS/ADVISORIES
ME...NONE.
MARINE...NONE.
DISCUSSION...ASB/CN
AVIATION...ASB/CN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page