Area Forecast Discussion
Issued by NWS Portland, ME

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FXUS61 KGYX 030645
AFDGYX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
245 AM EDT THU SEP 3 2015

.SYNOPSIS...
A COLD FRONT WILL DROP SOUTH THROUGH THE REGION TODAY AND WILL
PUSH OFFSHORE THIS EVENING. HIGH PRESSURE WILL BUILD SOUTH FROM
CANADA FRIDAY THROUGH SATURDAY. HIGH PRESSURE WILL SHIFT OFFSHORE
SATURDAY NIGHT AND WILL REMAIN ANCHORED OFF THE COAST INTO MIDWEEK
AND ALLOW FOR JULY-LIKE WEATHER SUNDAY INTO WEDNESDAY.

&&

.NEAR TERM /THROUGH TODAY/...
WEAK COLD FRONT DROPPING SOUTH FROM CANADA PRODUCING SOME ISOLATED
CONVECTION EARLY THIS MORNING ACROSS NORTHERN NEW YORK BUT THIS
ACTIVITY QUICKLY DIMINISHING AS IT HEADS INTO NORTHERN ZONES. THIS
BOUNDARY WILL CONTINUE TO SAG SOUTH THROUGH THE MORNING HOURS
PRODUCING A FEW SHOWERS AND EXPECT CONVECTION TO REDEVELOP ACROSS
CENTRAL AND SOUTH PORTIONS OF NEW HAMPSHIRE AND SOUTHWEST MAINE AS
HEATING PICKS UP LATER TODAY. SCATTERED SHOWERS AND THUNDERSTORMS
WILL CONTINUE INTO THE EARLY EVENING IN SOUTHERN ZONES BEFORE
DIMINISHING WITH LOSS OF HEATING. HIGH TEMPS WILL RANGE FROM THE
UPPER 70S NORTH TO THE UPPER 80S SOUTH.

&&

.SHORT TERM /TONIGHT THROUGH 6 PM FRIDAY/...
EXPECT CLOUDS TO PERSIST ACROSS SOUTHWEST ZONES THROUGH MUCH OF
THE NIGHT ALONG WITH A FEW WIDELY SCATTERED SHOWERS BEFORE
MIDNIGHT. REMAINDER OF THE FORECAST AREA SHOULD SEE CLEARING SKIES
AS HIGH PRESSURE BUILDS IN FROM THE NORTH. LOWS WILL RANGE FROM
THE UPPER 40S TO MID 50S NORTH AND UPPER 50S TO MID 60S SOUTH.

SKIES WILL GRADUALLY CLEAR ACROSS SOUTHERN NEW HAMPSHIRE ON FRIDAY
AS HIGH PRESSURE CONTINUES TO BUILD IN FROM THE NORTH. WILL SEE A
MUCH COOLER AND LESS HUMID DAY WITH HIGHS RANGING THROUGH THE 70S.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
HIGH PRESSURE WILL BE CENTERED OVERHEAD FRIDAY NIGHT. CLEAR AND
CALM CONDITIONS ARE EXPECTED. THIS SHOULD LEAD TO PLENTY OF
LOCALLY DENSE VALLEY FOG. THE HIGH MOVES OFF TO THE SOUTH DURING
THE DAY ON SATURDAY ALLOWING FOR THE START OF ANOTHER WARMING
TREND. WEST TO SOUTHWEST FLOW AROUND THE HIGH WILL PERSIST THROUGH
AT LEAST TUESDAY AND LIKELY ALLOW FOR TEMPERATURES WELL ABOVE
NORMAL SUNDAY THROUGH TUESDAY. HIGHS IN THE LOWER 90S WILL BE
POSSIBLE IN SPOTS MONDAY AND TUESDAY. THIS HEAT MAY VERY WELL LAST
INTO WEDNESDAY BEFORE A COLD FRONT POSSIBLY MOVES IN AND COOLS US
OFF. CHANCES FOR PRECIPITATION SATURDAY THROUGH WEDNESDAY LOOK
VERY LOW...WITH PERHAPS A FEW SHOWERS AND THUNDERSTORMS POSSIBLE
ACROSS THE MOUNTAINS BY TUESDAY OR WEDNESDAY.

&&

.AVIATION /06Z THURSDAY THROUGH MONDAY/...
SHORT TERM...AREAS OF IFR/LIFR CIGS/VSBY IN MORNING VALLEY
FOG...OTHERWISE VFR.

LONG TERM...LOCALLY DENSE LATE NIGHT/EARLY MORNING VALLEY FOG
LIKELY FRIDAY NIGHT THROUGH EARLY NEXT WEEK. OTHERWISE...MAINLY
VFR WITH HIGH PRESSURE IN CONTROL.

&&

.MARINE...
SHORT TERM...BRIEF PERIOD OF NORTHEASTERLY SCA WINDS MAY DEVELOP
OVERNIGHT TONIGHT BEFORE DROPPING OFF FRIDAY MORNING. THIS MAY
ALLOW SEAS TO BUILD CLOSE TO 5 FT...ESPECIALLY ACROSS SOUTHERN
MARINE ZONES.

LONG TERM...HIGH PRESSURE WILL BE IN CONTROL FRIDAY NIGHT THROUGH
EARLY NEXT WEEK ALLOWING FOR SUB-SCA CONDITIONS.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...NONE.

&&

$$


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