Area Forecast Discussion Issued by NWS Portland, ME
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FXUS61 KGYX 142038 AAA
AFDGYX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE GRAY ME
438 PM EDT FRI JUN 14 2013
.SYNOPSIS...
A COLD FRONT WILL PUSH OFFSHORE THIS EVENING AND HIGH PRESSURE WILL
BUILD IN FROM THE WEST OVERNIGHT AND SATURDAY. A WEAK COLD FRONT
WILL DROP SOUTH INTO NORTHERN NEW ENGLAND SATURDAY NIGHT...STALLING
OUT BY SUNDAY MORNING. AN AREA OF LOW PRESSURE WILL TRACK EAST ALONG
THIS BOUNDARY ON SUNDAY AND WILL CONTINUE EAST INTO THE MARITIMES
SUNDAY NIGHT. A COLD FRONT WILL APPROACH FROM THE NORTHWEST ON
MONDAY AND WILL STALL OVER THE REGION ON TUESDAY AS LOW PRESSURE
LIFTS NORTHEAST OUT OF THE OHIO VALLEY. LOW PRESSURE WILL MOVE EAST
THROUGH SOUTHERN NEW ENGLAND TUESDAY NIGHT AND THEN HEAD INTO THE
MARITIMES ON WEDNESDAY. HIGH PRESSURE WILL BUILD IN FROM THE WEST
WEDNESDAY NIGHT AND WILL PUSH OFFSHORE ON THURSDAY.
&&
.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
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UPDATE...SOME MINOR CHANGES TO REFLECT CURRENT OBSERVATIONAL
TRENDS. GIVEN STEEP LLVL LAPSE RATES...A FEW OF THE STRONGER
SHRA/TSTMS COULD HAVE GUSTY WINDS. OTHERWISE...EXPECT THAT LOSS OF
DIURNAL HEATING WILL BRING A QUICK END TO ANY PCPN.
PREVIOUS DISCUSSION...A COLD FRONT WILL PUSH OFF THE COAST THIS
EVENING. PRIOR TO PASSAGE...SCATTERED SHOWERS ARE EXPECTED. AN
ISOLD THUNDERSTORM CANNOT BE RULED OUT EITHER. ANY SHOWER ACTIVITY
SHOULD QUICKLY DISSIPATE OR MOVE OFFSHORE BY 00-01Z.
THEREAFTER...CLEAR SKIES ARE EXPECTED. SOME OF THE BETTER
RADIATORS MAY DROP TO AROUND 40 DEGREES IN THE FAR INTERIOR.
HOWEVER...MOST PLACES WILL PROBABLY PICK UP A BIT OF A BREEZE
AFTER MIDNIGHT AS THE GRADIENT TIGHTENS UP IN THE DEVELOPING CAA
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.SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/...
A VERY NICE DAY IS ON TAP FOR SATURDAY WITH PLENTY OF
SUNSHINE...DRY RH LEVELS...AND TEMPS WELL INTO THE 70S.
HOWEVER...WINDS WILL BE GUSTY...AROUND 25 MPH AT TIMES. ACROSS THE
NORTHERN WHITES AND WESTERN MAINE MOUNTAINS...CLOUDS MAY INCREASE
DURING THE AFTERNOON ALONG WITH A SLIGHT CHANCE OF A FEW RAIN
SHOWERS AS A SHORT WAVE TROUGH PASSES BY TO THE NORTH...PUSHING A
COLD FRONT INTO THE AREA. OTHER THAN SOME INCREASING HIGH CLOUDS
SATURDAY NIGHT...AN UNEVENTFULLY FAIR NIGHT IS EXPECTED.
&&
.LONG TERM /SUNDAY THROUGH FRIDAY/...
WEAK BACKDOOR COLD FRONT WILL SAG SOUTH INTO THE REGION BY SUNDAY
MORNING AND LOW PRESSURE APPROACH FROM THE WEST WILL TRACK EAST
ALONG THIS BOUNDARY SUNDAY AFTERNOON. MORNING SUN WILL GIVE WAY TO
INCREASING CLOUDS AND RAIN WILL QUICKLY OVERSPREAD THE REGION FROM
WEST TO EAST IN THE AFTERNOON. NOT LOOKING FOR A WHOLE LOT IN THE
WAY OF QPF AS MOST MODELS TAKING THE AXIS OF HEAVIEST PRECIP THROUGH
SOUTHERN NEW ENGLAND. FAST UPPER FLOW WILL QUICKLY PUSH PRECIP
THROUGH THE REGION BY SATURDAY EVENING AND WILL SEE PARTIAL CLEARING
AFTER MIDNIGHT.
WILL SEE A BRIEF BREAK IN THE ACTION ON MONDAY WITH A MIX OF SUN AND
CLOUDS AND SEASONABLE TEMPS. COLD FRONT APPROACHING FROM THE
NORTHWEST WILL BRING INCREASING CLOUDS AND A CHANCE OF SHOWERS OR
THUNDERSTORMS LATE IN THE DAY IN THE NORTH. FRONT WILL GRADUALLY SAG
SOUTH OVERNIGHT AND WILL REMAIN THE FOCUS FOR SHOWERS AND POSSIBLY
AN ISOLATED THUNDERSTORM.
LOW PRESSURE LIFTING NORTHEAST OUT OF THE OHIO VALLEY WILL TRACK
NORTHEAST ALONG THIS BOUNDARY ON TUESDAY. EXPECT RAIN TO PUSH INTO
SOUTHERN ZONES EARLY TUESDAY AFTERNOON AND WILL BECOME HEAVY AT
TIMES IN THOSE AREAS BY TUESDAY EVENING AS FAIRLY INTENSE LOW
PRESSURE FOR THIS TIME OF YEAR MOVES INTO THE DELAWARE BAY AREA.
POTENTIAL WILL BE THERE FOR HEAVY RAINFALL ACROSS SOUTHERN NEW
HAMPSHIRE AND MAINE AS STRONG DYNAMICS AND OVER-RUNNING SET UP
THROUGH THE EVENING. EXPECT RAIN TO TAPER TO SHOWERS AFTER MIDNIGHT.
LOW PRESSURE WILL QUICKLY SHIFT INTO THE MARITIMES ON WEDNESDAY AS
HIGH PRESSURE BUILDS IN FROM THE WEST. WILL SEE CLEARING SKIES
DURING THE MORNING WITH MOST AREAS BECOMING SUNNY BY AFTERNOON.
HIGH PRESSURE WILL REMAIN IN CONTROL OVER THE NORTHEAST FOR THE
REMAINDER OF THE WEEK WITH RETURN FLOW BRINGING WARM AND MUGGY
WEATHER BACK INTO THE NORTHEAST ON FRIDAY.
&&
.AVIATION /21Z FRIDAY THROUGH WEDNESDAY/...
SHORT TERM...ASIDE FROM A FEW SHOWERS THROUGH 00Z THIS
EVENING...VFR CONDITIONS ARE EXPECTED TONIGHT THROUGH SATURDAY
NIGHT. NW WINDS WILL GUST 20-25 KT DURING THE DAY ON SATURDAY.
LONG TERM...AREAS MVFR CEILINGS SUNDAY. VFR SUNDAY NIGHT THROUGH
TUESDAY. IFR/LIFR CEILINGS VSBY DEVELOPING TUESDAY EVENING...THEN
BECOMING VFR ON WEDNESDAY.
&&
.MARINE...
SHORT TERM...SUB-SCA CONDITIONS ARE EXPECTED TONIGHT THROUGH
SATURDAY NIGHT. HOWEVER...NEAR-SHORE LOCATIONS MAY SEE MARGINAL
SCA GUSTS SATURDAY. AT THIS TIME...MIXING OVER THE WATERS SEEMS TO
MARGINAL FOR A SCA.
LONG TERM...SCA`S LIKELY TUESDAY NIGHT INTO WEDNESDAY.
&&
.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...NONE.
&&
$$
NEAR TERM...LEGRO