Area Forecast Discussion
Issued by NWS Boston, MA

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000 FXUS61 KBOX 282126 AFDBOX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAUNTON MA 426 PM EST FRI NOV 28 2014 .SYNOPSIS...
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DRY BUT COLDER WEATHER OVERSPREADS THE REGION THIS AFTERNOON THROUGH SATURDAY. A WARM FRONT CROSSES THE AREA SATURDAY NIGHT WITH A LIGHT WINTRY MIX OF PRECIPITATION POSSIBLE. BEHIND THE FRONT MUCH MILDER WEATHER IS ON TAP FOR SUNDAY AND MONDAY. A POLAR FRONT WILL THEN SWEEP ACROSS THE REGION LATER MON...BRINGING A RETURN TO COLDER WEATHER TUE. A WARM FRONT MAY THEN BRING ANOTHER RISK OF WINTRY PRECIPITATION TOWARD THE MIDDLE OF NEXT WEEK.
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&& .NEAR TERM /THROUGH TONIGHT/...
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1 PM UPDATE...OTHER THAN A FEW LINGERING RAIN SHOWERS ON THE CAPE...PRECIP HAS MOVED OFFSHORE AS THE INVERTED TROUGH HAS PULLED AWAY FROM SOUTHERN NEW ENGLAND. A FEW LAKE EFFECT SNOW SHOWERS MAY MAKE IT OVER THE BERKSHIRES FROM NEW YORK STATE LATER THIS AFTERNOON...BUT OTHER THAN THAT...EXPECT DRY WEATHER FOR THE REMAINDER OF TODAY. PARTLY TO MOSTLY CLOUDY SKIES WILL CONTINUE FOR MOST AREAS WITH CLOUDS PULLING AWAY FROM THE EAST COAST BUT MORE MOVING IN FROM THE NORTHWEST. ONLY ONES SEEING FULL SUNNY SKIES NOW IS THE SOUTH COASTS OF CONNECTICUT AND RHODE ISLAND. TEMPERATURES ARE IN THE LOW TO MID 30S AT MOST THIS AFTERNOON AND EXPECT THATS AS WARM AS WE ARE GOING TO GET TODAY GIVEN THE LOW SUN ANGLE AND THE CLOUDY SKIES.
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&& .SHORT TERM /SATURDAY/...
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TONIGHT... ANY LEFTOVER PRECIP ON THE OUTER CAPE WILL EXIT THE COAST BY 02Z...THEN SKIES WILL BECOME MOSTLY CLEAR. W-NW WINDS WILL REMAIN A BIT GUSTY EARLY TONIGHT ALONG THE COAST...BUT WINDS ACROSS THE REGION WILL DIMINISH AS HIGH PRES RIDGE BUILDS E. CORE OF COLDEST H85 TEMPS REMAINS ACROSS NORTHERN NEW ENGLAND...BUT WILL DROP TO -10C TO -13C OVERNIGHT. WITH LIGHT WINDS...PARTLY CLOUDY SKIES AND A NEW SNOWPACK ACROSS S NH/N CENTRAL AND W MA...WILL SEE TEMPS FALL TO THE SINGLE DIGITS TO LOWER TEENS THERE...WHILE MID TO UPPER TEENS WILL BE SEEN ACROSS MOST OTHER AREAS OVERNIGHT. READINGS WILL HOLD IN THE 20S ALONG THE IMMEDIATE COAST.
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&& .LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
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UPDATED 340 AM HIGHLIGHTS... * MUCH MILDER SUNDAY AND MONDAY * RETURN TO CHILLY WEATHER TUESDAY * SEASONABLE TEMPERATURES TOWARD THE END OF NEXT WEEK SYNOPTIC OVERVIEW AND MODEL GUIDANCE EVALUATION... DECENT LARGE SCALE AGREEMENT AMONG THE 28/12Z GUIDANCE SUITE. RELATIVELY ZONAL FLOW ALOFT INTO THE MIDDLE OF NEXT WEEK CALLS THE TIMING OF VARIOUS FEATURES INTO QUESTION. THE USA MODELS MAINTAIN A FLATTER MID LEVEL FLOW LONGER THAN THE INTERNATIONAL GUIDANCE. THIS IS LIKELY DUE TO THE HANDLING OF A POTENT SHORTWAVE PROJECTED TO ARRIVE FROM THE NORTHWEST PACIFIC. SINCE THIS IS A DAY 6/DAY 7 PROBLEM...WILL FAVOR THE CONSENSUS BLEND UNTIL THE ENERGY OF THIS SHORTWAVE CAN BE BETTER SAMPLED. DAILY SENSIBLE WEATHER DETAILS... SATURDAY NIGHT...WARM FRONT APPROACHES THE REGION. THUS INCREASING CLOUDS WITH THE CHANCE OF SOME SPOTTY LIGHT PRECIPITATION. MODEL SOUNDINGS SUGGEST ANY LIGHT PRECIP WOULD BEGIN AS LIGHT SNOW OR FLURRIES THEN TRANSITIONING TO SLEET...AND PERHAPS SOME FREEZING RAIN...BEFORE COMPLETING THE TRANSITION TO ALL RAIN. COLUMN STRUGGLES TO SATURATE SO ANY PRECIPITATION SHOULD BE LIGHT AND SPOTTY. HENCE NOT A HIGH IMPACT EVENT. SUNDAY AND MONDAY...SUBTROPICAL RIDGE BRIEFLY BUILDS ACROSS THE SOUTHEAST STATES AND THIS PUSHES MILDER AIR NORTHWARD INTO NEW ENGLAND WITH HIGHS INTO THE 50S ACROSS RI AND EASTERN MA BOTH DAYS. A POLAR COLD FRONT MAY YIELD THE RISK FOR A FEW RAIN SHOWERS /POSSIBLE ENDING AS SNOW SHOWERS/ LATE MONDAY/MONDAY NIGHT. TUESDAY...1042 MB HIGH AND ITS ASSOCIATED POLAR AIRMASS SETTLE OVER NEW ENGLAND...WITH TEMPS NEARLY 20 DEGS COLDER THAN MONDAY. WEDNESDAY...OVERRUNNING PRECIP POSSIBLE WITH A WINTRY MIX GIVEN COLD AIR WILL INITIALLY BE SLOW TO DISLODGE. THURSDAY AND FRIDAY...TREND IS FOR DRIER BUT A RETURN TO COLDER... BUT SEASONABLE...WEATHER.
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&& .AVIATION /20Z FRIDAY THROUGH WEDNESDAY/...
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FORECASTER CONFIDENCE LEVELS... LOW...LESS THAN 30 PERCENT. MODERATE...30 TO 60 PERCENT. HIGH...GREATER THAN 60 PERCENT. .SHORT TERM /THROUGH SATURDAY/...HIGH CONFIDENCE. THROUGH 00Z...CONDITIONS SHOULD IMPROVE GRADUALLY TO VFR FROM WEST TO EAST THROUGH THE AFTERNOON. TONIGHT...ANY LOCATIONS ALONG THE EAST COAST THAT HAVE LINGERING MVFR CONDITIONS WILL IMPROVE QUICKLY TO VFR. SATURDAY...VFR. KBOS TERMINAL...HIGH CONFIDENCE. KBDL TERMINAL...HIGH CONFIDENCE. OUTLOOK...SATURDAY NIGHT THROUGH WEDNESDAY...MODERATE CONFIDENCE. SATURDAY NIGHT-SUNDAY...LOWERING CLOUDS SATURDAY NIGHT WITH POTENTIAL FOR MVFR CIGS/VSBYS IN WIDELY SCATTERED PCPN LATE AT NIGHT AND SUNDAY MORNING. LOW LEVEL WINDS...AROUND 2000 FEET... WILL INCREASE OVERNIGHT AND SUNDAY TO 40-45 KNOTS AND MAY CREATE LOW LEVEL WIND SHEAR. MONDAY...VFR WITH SCATTERED SHOWERS LATE OR AT NIGHT AS A COLD FRONT MOVES THROUGH. SOUTHWEST WINDS AHEAD OF THE COLD FRONT WILL SWITCH TO NORTHWEST AFTER THIS FRONT MOVES THROUGH. TUESDAY...VFR WITH NORTH TO NORTHEAST WINDS. WEDNESDAY...SCATTERED MVFR WITH MAINLY SOUTHEAST WINDS.
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&& .MARINE...
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FORECASTER CONFIDENCE LEVELS... LOW...LESS THAN 30 PERCENT. MODERATE...30 TO 60 PERCENT. HIGH...GREATER THAN 60 PERCENT. .SHORT TERM /THROUGH TONIGHT/...HIGH CONFIDENCE. TODAY...N-NW WINDS WILL INCREASE DURING THE MORNING WITH GUSTS UP TO 25 KT MAINLY ACROSS EASTERN AREAS. SEAS WILL ALSO BUILD AGAIN UP TO 5-6 FT MAINLY OVER THE OPEN WATERS. WINDS WILL BRIEFLY GUST TO 25 FT ACROSS CAPE COD BAY AND NANTUCKET SOUND AROUND MIDDAY SO HAVE PUT UP SMALL CRAFT THERE. WINDS WILL BEGIN TO DIMINISH LATE IN THE DAY. TONIGHT...W-NW WINDS WILL DIMINISH EARLY TONIGHT BUT SEAS WILL REMAIN AOA 5 FT ON THE OUTER WATERS AFTER MIDNIGHT BEFORE FINALLY SUBSIDING. OUTLOOK...SATURDAY THROUGH WEDNESDAY...MODERATE CONFIDENCE. SATURDAY NIGHT...SMALL RISK OF A FEW SHOWERS OF RAIN OR SNOW AS A HIGH PRESSURE MOVES FARTHER OFFSHORE. SUNDAY...WARM FRONT LIFTS NORTH THROUGH THE REGION. MODEST SW WIND DEVELOPS...BUT MAINLY DRY WEATHER. MONDAY...COLD FRONT REMAINS WEST OF NEW ENGLAND...SO MODEST SW WINDS CONTINUE. TUESDAY...COLD HIGH PRES DRIFTS ACROSS SOUTHERN QUEBEC AND NORTHERN NEW ENGLAND. LIGHTER NORTHEAST WINDS WITH GRADUALLY DIMINISHING SEAS. WEDNESDAY...HIGH PRESSURE MOVES FARTHER NORTHEAST INTO THE MARITIMES. WINDS SHIFT FROM SOUTH TO SOUTHWEST DURING THE DAY. RELATIVELY LIGHT SEAS.
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&& .BOX WATCHES/WARNINGS/ADVISORIES... CT...NONE. MA...NONE. NH...NONE. RI...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR ANZ231- 232. SMALL CRAFT ADVISORY UNTIL 10 PM EST THIS EVENING FOR ANZ250- 251-256. SMALL CRAFT ADVISORY UNTIL 3 AM EST SATURDAY FOR ANZ254-255. && $$ SYNOPSIS...BELK/RLG NEAR TERM...RLG SHORT TERM...RLG LONG TERM...BELK AVIATION...BELK/RLG MARINE...BELK/RLG

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