National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Portland, ME
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KGYX 221857
AFDGYX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
257 PM EDT WED MAY 22 2013

.SYNOPSIS...
-- Changed Discussion --
A WARM FRONT WILL LIFT NORTH THROUGH THE REGION LATE TONIGHT AND
EARLY THURSDAY. A COLD FRONT WILL APPROACH FROM THE WEST THURSDAY
AFTERNOON AND WILL SLOWLY PUSH OFFSHORE THROUGH FRIDAY. LOW
PRESSURE WILL DEVELOP ON THE FRONT SOUTH OF NEW ENGLAND FRIDAY
NIGHT AND IT WILL INTENSIFY AS IT MOVES SLOWLY NORTHWARD INTO THE
GULF OF MAINE BY SUNDAY EVENING. LOW PRESSURE WILL SLOWLY CONTINUE
NORTHEAST INTO THE MARITIMES ON MONDAY AS HIGH PRESSURE BUILDS IN
FROM THE WEST. HIGH PRESSURE WILL CONTINUE TO BUILD IN FROM THE
WEST ON TUESDAY.-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TONIGHT/...
-- Changed Discussion --
WARM FRONT STALLED OVER SOUTHERN NEW ENGLAND WILL GRADUALLY LIFT
NORTHEAST OVERNIGHT AND EARLY THURSDAY. WEAK OVER-RUNNING WILL KEEP
SHOWERS IN THE FORECAST FOR MOST AREAS BUT THINK THE BULK OF THE
PRECIPITATION WILL BE NORTH OF THE BORDER IN BETTER LIFT. OCEAN
STRATUS WILL AGAIN CLOSE IN MUCH OF THE REGION DOWNWIND OF THE
MOUNTAINS. SHOWER AND THUNDERSTORM ACTIVITY BACK IN EASTERN NEW
YORK AND WESTERN NEW ENGLAND MAY POKE INTO PORTIONS OF THE
CONNECTICUT VALLEY THIS EVENING BUT MARINE LAYER WILL INHIBIT ANY
FURTHER EASTWARD PROGRESS. LOOKING FOR LOW TEMPS RANGING THROUGH
THE 50S OVERNIGHT.-- End Changed Discussion --

&&

.SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/...
-- Changed Discussion --
WARM FRONT WILL LIFT NORTH OF THE REGION ON THURSDAY WITH UNSTABLE
AND MOIST AIRMASS SETTLING INTO THE REGION FOR THE AFTERNOON. MORE
SOUTHWESTERLY BOUNDARY LAYER WINDS SHOULD BLOW OCEAN STRATUS OUT
OF MOST SOUTHERN SECTIONS OF NEW HAMPSHIRE AND WESTERN MAINE
DURING THE MORNING AND EARLY AFTERNOON. EXPECT SHOWERS AND
THUNDERSTORM TO QUICKLY DEVELOP DURING THE LATE MORNING AND EARLY
AFTERNOON. BEST CHANCES OF PRECIP WILL BE IN WESTERN ZONES. WIDE
RANGE IN TEMPS TOMORROW WITH LOWER TO MID 70S IN NEW HAMPSHIRE AND
SOUTHWEST MAINE. SOUTHWEST FLOW WILL MID COAST AREAS IN THE 60S.

SLOW MOVING COLD FRONT WILL GRADUALLY EDGE INTO THE REGION THURSDAY
NIGHT WITH A STEADY RAIN OVER-SPREADING MUCH OF THE REGION
OVERNIGHT. WILL ALSO LIKELY SEE SOME EVENING THUNDERSTORMS.-- End Changed Discussion --

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
-- Changed Discussion --
UPR LVL SPLIT PATTERN WITH TROF LIFTING TO THE NE OVER NE CANADA AND
ANOTHER DIGGING TO TOWARD THE MID ATLANTIC REGION. AT THE SFC THE CD
FNT SLOWLY MOVES THRU THEN LOW PRES FORMS OFF THE MID ATLANTIC COAST
ALONG THE FNT IN RESPONSE TO THE DIGGING UPR LVL TROF. THIS LOW THEN
TRACKS UP THE FNT PROVIDING HI PROB PRCP FRIDAY AND FRIDAY NGT. THE
UPR LVL TROF CUTS OFF TO OUR S THEN SLOWLY LIFTS N SATURDAY THRU
SUNDAY WITH THE SFC LOW TRACKING UP THE E COAST WHICH CONT THE PROB
PRCP SATURDAY AND SATURDAY NGT. THE LOW TRACKS UP THE ME COAST AND
TO OUR NE ON SUNDAY WITH STILL CHC SHRA.

FINALLY THE CUTOFF AND SFC LOWS LIFT FAR ENOUGH TO THE NE TO SEE
SLOW IMPROVEMENT TO OUR WX SUNDAY NGT AND MONDAY. UPR LVL RIDGE
AND SFC HIGH BUILD IN TUESDAY FOR FAIR AND MILDER WX.

GENERALLY USED BLEND OF GFS40, GMOS, HPC QPF, MEX MOS AND WNA4 FOR
THE LONG TERM FCST.-- End Changed Discussion --

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
-- Changed Discussion --
SHORT TERM...IFR/LIFR CEILINGS/VSBYS TONIGHT...IMPROVING TO VFR ON
THURSDAY.

LONG TERM /FRIDAY THROUGH SUNDAY/...AN EXTENDED PERIOD OF
IFR/LIFR IN SHRA FRIDAY THRU SATURDAY NGT AND STILL MVFR/IFR
LIKELY TO PERSIST ON SUNDAY.-- End Changed Discussion --

&&

.MARINE...
-- Changed Discussion --
SHORT TERM...SCA IN EFFECT THURSDAY AFTERNOON THROUGH THURSDAY NIGHT.

LONG TERM /FRIDAY THROUGH SUNDAY/...EXTENDED SOUTHERLY FLOW
FRIDAY AHEAD OF APPROACHING CD FNT MAY SEE WIND GUSTS REACH SCA
LEVELS. SEAS FROM PERSISTENT ONSHORE FLOW LIKELY TO RESULT IN SCA
LEVELS FOR HAZARDOUS SEAS FRIDAY. WINDS BECOME NORTHERLY BEHIND
THE FNT FRIDAY NGT THRU THE WEEKEND AND AGAIN MAY SEE SCA GUSTS.
SEAS CONT TO ROUGH AT SCA LEVELS THRU THE WEEKEND AS WELL.-- End Changed Discussion --

&&

.FIRE WEATHER...-- Changed Discussion --
NO PROBLEMS NOTED.-- End Changed Discussion --


&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...SMALL CRAFT ADVISORY FROM NOON THURSDAY TO NOON EDT FRIDAY FOR
     ANZ150>154.

&&

$$
National Weather Service National Headquarters
