Gale Warning 25, NWS Boston/Norton, MA

539 
WHUS71 KBOX 200331
MWWBOX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
1131 PM EDT FRI APR 19 2013

...STRONG SOUTHERLY FLOW COMBINED WITH APPROACHING COLD FRONT
WILL CREATE MARGINAL GALE FORCE WINDS...

.A STRONG COLD FRONT WILL PUSH ACROSS THE WATERS OVERNIGHT
TONIGHT. EXPECT STRONG SCA WIND GUSTS TO MARGINAL GALE FORCE
WINDS. HOWEVER LOCALLY STRONGER GUSTS ARE POSSIBLE WITHIN ANY
HEAVIER SHOWERS AND THUNDERSTORMS OVERNIGHT.

ANZ236-201145-
/O.UPG.KBOX.SC.Y.0050.000000T0000Z-130420T1200Z/
/O.EXA.KBOX.GL.W.0025.000000T0000Z-130420T0700Z/
NARRAGANSETT BAY-
1131 PM EDT FRI APR 19 2013

...GALE WARNING IN EFFECT UNTIL 3 AM EDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 3 AM EDT SATURDAY. THE SMALL
CRAFT ADVISORY IS NO LONGER IN EFFECT.

* WINDS AND SEAS...SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 35
  KT. WAVES 2 TO 4 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ250-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTH WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT.
  SEAS 5 TO 8 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ254-255-201145-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1200Z/
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 40 KT.
  SEAS 6 TO 9 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ256-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTHWEST WINDS 20 TO 25 KT WITH GUSTS UP TO 
  40 KT. SEAS AROUND 9 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ231-251-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
CAPE COD BAY-MASSACHUSETTS BAY AND IPSWICH BAY-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 
  35 KT. SEAS 2 TO 4 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ232>234-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
  SEAS 3 TO 5 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ235-237-200700-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T0700Z/
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
1131 PM EDT FRI APR 19 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM EDT SATURDAY...

* WINDS AND SEAS...SOUTH AROUND WINDS 25 KT WITH GUSTS UP TO 35 KT.
  SEAS 6 TO 8 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ230-201145-
/O.CON.KBOX.SC.Y.0050.000000T0000Z-130420T1200Z/
BOSTON HARBOR-
1131 PM EDT FRI APR 19 2013

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

* WINDS AND SEAS...SOUTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 30
  KT. WAVES 1 TO 2 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 25 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

594 
WHUS71 KBOX 200711
MWWBOX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
311 AM EDT SAT APR 20 2013

ANZ256-201515-
/O.CAN.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
/O.EXB.KBOX.SC.Y.0050.000000T0000Z-130421T1800Z/
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
311 AM EDT SAT APR 20 2013

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT SUNDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 2 PM EDT SUNDAY. THE GALE
WARNING HAS BEEN CANCELLED.

* WINDS AND SEAS...SOUTHWEST WINDS BECOMING WEST 15 TO 25 KT WITH
  GUSTS UP TO 30 KT. SEAS 6 TO 9 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 25 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

ANZ236-201200-
/O.EXP.KBOX.GL.W.0025.000000T0000Z-130420T0700Z/
/O.EXA.KBOX.SC.Y.0050.000000T0000Z-130420T1200Z/
NARRAGANSETT BAY-
311 AM EDT SAT APR 20 2013

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM EDT THIS MORNING.

* WINDS AND SEAS...SOUTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO
  25 KT. SEAS 1 TO 3 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 25 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

ANZ235-237-201515-
/O.EXP.KBOX.GL.W.0025.000000T0000Z-130420T0700Z/
/O.EXB.KBOX.SC.Y.0050.000000T0000Z-130421T1200Z/
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
311 AM EDT SAT APR 20 2013

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SUNDAY...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM EDT SUNDAY.

* WINDS AND SEAS...SOUTHWEST WINDS BECOMING WEST 15 TO 25 KT WITH
  GUSTS UP TO 30 KT. SEAS 5 TO 8 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 25 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

ANZ250-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
311 AM EDT SAT APR 20 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

* WINDS AND SEAS...SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 
  35 KT. SEAS 5 TO 8 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ254-255-201200-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1200Z/
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
311 AM EDT SAT APR 20 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* WINDS AND SEAS...SOUTHWEST WINDS 20 TO 25 KT WITH GUSTS UP TO 
  35 KT. SEAS 6 TO 9 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ231-251-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
CAPE COD BAY-MASSACHUSETTS BAY AND IPSWICH BAY-
311 AM EDT SAT APR 20 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

* WINDS AND SEAS...SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 
  35 KT. SEAS 2 TO 4 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ232>234-201000-
/O.CON.KBOX.GL.W.0025.000000T0000Z-130420T1000Z/
NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
311 AM EDT SAT APR 20 2013

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

* WINDS AND SEAS...SOUTHWEST WINDS 20 TO 25 KT WITH GUSTS UP TO 
  35 KT. SEAS 3 TO 5 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE OR
EQUIPMENT SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

ANZ230-201200-
/O.CON.KBOX.SC.Y.0050.000000T0000Z-130420T1200Z/
BOSTON HARBOR-
311 AM EDT SAT APR 20 2013

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS
MORNING...

* WINDS AND SEAS...SOUTHWEST WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
  SEAS 1 TO 2 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 25 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
208 PM EDT FRI APR 19 2013

.SYNOPSIS...
STRONG SOUTHERLY WINDS WILL ADVECT WARM AND MOIST ACROSS THE
REGION TODAY. WIDESPREAD LIGHT SHOWERS WILL BE POSSIBLE AHEAD OF A
COLD FRONT TO SWEEP THROUGH THE REGION AROUND MIDNIGHT. SHOWERS
AND THUNDERSTORMS CAN BE ANTICIPATED AHEAD OF THIS COLD FRONT.
WINDS WILL BACK OUT OF THE WEST BEHIND THIS FRONT...ADVECTING A
COLDER AND DRIER AIRMASS FOR SATURDAY INTO MONDAY. UNSETTLED
WEATHER MAY RETURN TOWARD THE MIDDLE AND END OF NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...

200 PM UPDATE...
MUGGY DAY IS OCCURRING ACROSS SNE AS DEWPOINTS CONTINUE TO RISE IN
WAKE OF BEING IN THE WARM SECTOR. STRONG SOUTHERLY WINDS OVER THE
WATERS IS ADVECTING THIS MOISTURE. LATEST SOUNDINGS SHOW A GOOD A
MOUNT OF MIXING ACROSS THE REGION ESP SINCE GUSTS RANGE FROM 25-30
KTS. THIS IS ALSO BRINGING IN DRY WEATHER FROM ALOFT AND ALLOWING
FOR BREAKS IN THE CLOUDS. THESE BREAKS COMBINED WITH THE APRIL SUN
ANGLE AND STRONG WAA HAS INCREASED TEMPS INTO THE UPPER 60S TO MID
70S. CLOUDS ARE ALSO STARTING TO BUBBLE UP...THEREFORE AN ISOLATED
SHOWER OR SPRINKLE IS NOT OUT OF THE QUESTION AS CONDITIONS ARE
RIPE. OTHERWISE BULK OF THE FORECAST IS ON TRACK AS WELL AS THE
TIMING OF THE COLD FRONT FOR TONIGHT.

PREVIOUS DISCUSSION...

SOUTHERLY FLOW WILL CONTINUALLY ENHANCE AHEAD OF AN APPROACHING COLD
FRONT LATER TONIGHT...STREAMING WARMER MOISTURE LADEN AIR NORTHWARD.
THERE ARE EXPECTATIONS OF LOW CLOUDS AND FOG TO LINGER ACROSS THE
NEAR SHORES AS HIGHER DEWPOINT AIR ADVECTS OVER COLDER OCEAN WATERS.
BUT ACROSS THE INTERIOR...IT IS QUITE POSSIBLE THAT PROCEEDING WARM
AIR ADVECTION ALLOWING TEMPERATURES INTO THE UPPER 60S INTO THE LOW
70S WILL RESULT IN SOME BOUNDARY LAYER MIXING...AND SUBSEQUENT MIX-
DOWN OF FASTER MOMENTUM AND MID-LEVEL DRY AIR TO THE SURFACE.

SO WHILE MOSTLY CLOUDY CONDITIONS ARE INITIALLY THOUGHT...PARTLY
CLOUDY CONDITIONS MAY DEVELOP ACROSS THE INTERIOR. WINDS JUST 2-3
KFT AGL WILL BE SUSTAINED AROUND 50 MPH. IT IS QUITE POSSIBLE GUSTY
WINDS UP TO 40 MPH WILL IMPACT THE SURFACE...BUT DO NOT HAVE A GREAT
AMOUNT OF CONFIDENCE IN REACHING WIND ADVISORY CRITERIA.

WILL CONTINUE WITH SLIGHT CHANCE POPS ACROSS THE REGION AS LOW-MID
LEVEL MOISTURE LADEN AIR ASCENDS ISENTROPICALLY. WIDELY SCATTERED
LIGHT SHOWERS ARE ALL THAT IS EXPECTED.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/...
TONIGHT...

COLD FRONT SWEEPS ACROSS NEW ENGLAND AROUND MIDNIGHT. ANTICIPATING A
BROAD BAND OF RAIN WITH EMBEDDED HEAVIER SHOWERS AND THUNDERSTORMS.
HEAVIEST OF THE RAIN LOOKS TO OCCUR MORE TOWARDS THE FIRST HALF OF
THE FORECAST PERIOD. SOME CONCERN OVER GUSTY WINDS AT THE SURFACE AS
WINDS 2-3 KFT ALOFT WILL INCREASE TO 70 TO 80 MPH. BUT FEEL THIS IS
A CONSEQUENCE OF BOUNDARY LAYER DECOUPLING...AND THAT THE SURFACE
INVERSION WILL LIMIT THE MIX-DOWN OF MOMENTUM. IT IS PERHAPS THAT
PRECIPITATION DRAG COULD BE AN ISSUE...BUT HAVE LOW CONFIDENCE.

WHILE THE MOISTURE STREAM NORTHWARD DEEPENS WITH PWAT VALUES AROUND
1.25 TO 1.5 INCHES...THERE IS LOW CONFIDENCE CONCERNING FLOODING
POTENTIAL WITH THE QUICK PROGRESSION OF THE COLD FRONT. PRESENTLY
HAVE STORM-TOTAL AMOUNTS FORECASTED NO GREATER THAN 1 INCH. DO HAVE
HIGH CONFIDENCE OF ELEVATED CONVECTION /NON-SEVERE/ AS MOST-UNSTABLE
CAPE VALUES REACH AS HIGH AS 500 J/KG IN AN AREA OF DECENT 0-6 KM
BULK SHEAR. CONVECTIVE INDICES ALSO MEET OR EXCEED THRESHOLDS.

TEMPERATURES SHOULD REMAIN STEADY TOWARDS MIDNIGHT WITH PATCHY DENSE
FOG AND LOW CLOUDS...ESPECIALLY CLOSER TO SHORE. WITH COLD FRONTAL
PASSAGE...WINDS WILL BACK OUT OF THE WEST-NORTHWEST GUSTING 20 TO 25
MPH. ANTICIPATING QUICKLY CLEARING AND IMPROVING CONDITIONS AS
COLDER AND DRIER AIR BUILDS INTO THE REGION.

SATURDAY...

SHOWERS LINGERING ALONG THE CAPE AND THE ISLANDS EARLY...BUT
EXPECTED TO QUICKLY CLEAR OUT. OTHERWISE WEST-NORTHWEST FLOW
PREVAILS ADVECTING A COOLER AND DRIER AIRMASS ACROSS THE REGION.
ANTICIPATING THE BOUNDARY LAYER TO BECOME WELL-MIXED UP TO H8
ALLOWING THE MIX-DOWN OF FASTER MOMENTUM AND DRIER AIR. WIND GUSTS
AROUND 25 MPH EXPECTED. CHILLY DAY WITH BELOW-NORMAL TEMPS...POSSIBLY
HAMPERED BY DIURNAL CUMULUS. HIGHS AROUND THE MID 50S.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
BIG PICTURE...UPPER RIDGE REMAINS IN PLACE OVER THE WESTERN
ATLANTIC OCEAN. ONE SHORTWAVE MOVES ACROSS NEW ENGLAND INTO
ATLANTIC CANADA OVER THIS WEEKEND. UPPER LOW/SHORTWAVE FROM ALASKA
DIGS OVER THE PLAINS EARLY NEXT WEEK THEN MOVES TO THE GREAT LAKES
MIDWEEK. SOUTHERN STREAM SHORTWAVE REACHES THE COAST MONDAY
GENERATING EITHER A COASTAL LOW PRESSURE OR AN INVERTED TROUGH.
TEMPERATURES LOWER TO SEASONABLE LEVELS THIS WEEKEND AND THEN
MODERATE NEXT WEEK.

OVERALL GOOD AGREEMENT AMONGST THE 19/00Z GUIDANCE THROUGH MONDAY.
THEREAFTER...GENERAL AGREEMENT ON MAGNITUDE OF VARIOUS SYNOPTIC
FEATURES WITH SIGNIFICANT DISAGREEMENT ON THE TIMING OF THEIR
MOVEMENT.

MODEL PREFERENCES...WE FAVORED A BLEND OF GFS/ECMWF GUIDANCE...
WITH HPC GUIDANCE WHERE AVAILABLE.

THE DAILIES...

SATURDAY NIGHT...
CLEARING SKIES WITH NORTH WINDS DIMINISHING. PRESSURE PATTERN
SHOWS SOME GRADIENT...BUT WIND DATA SUGGESTS DECOUPLING AT LEAST
IN THE INTERIOR. DEWPOINTS FALL INTO THE UPPER TEENS AND 20S. SO
WE EXPECT MIN TEMPS BELOW FREEZING AWAY FROM THE COAST.

SUNDAY-MONDAY...HIGH PRESSURE BUILDS OVER THE REGION. GENERALLY
DRY WEATHER. INCREASING CLOUDS LATER MONDAY/MONDAY NIGHT AS AN
OFFSHORE SYSTEM DEVELOPS. GFS CONTINUES TO BE A BIT FASTER THAN
THE ECMWF BRINGING PRECIPITATION TO OUR REGION...ESPECIALLY
CENTRAL AND EASTERN MA AND RI. SINCE THE ECMWF HAS SPED UP ITS
TIMING...DECIDED TO BRING A CHANCE OF SHOWERS TO THE FORECAST
MONDAY EVENING.

TUESDAY-WEDNESDAY-THURSDAY...DETAILS ON THIS PERIOD ARE LOW
CONFIDENCE. MODEL SOLUTIONS INDICATE AN OFFSHORE SYSTEM THAT MAY
AFFECT US TUESDAY-WEDNESDAY WHILE ANOTHER COLD FRONT APPROACHES
FROM THE GREAT LAKES WEDNESDAY-THURSDAY. DIFFICULT TO FINE-TUNE
THE DETAILS THIS FAR OUT...EVEN MORE SO AS THE SOLUTIONS HAVE
SHIFTED A BIT. FOR NOW WE ARE INDICATING CLOUDS AND CHANCE POPS
THROUGH THE PERIOD. THAT SAID...NOT EXPECTING RAINFALL THE ENTIRE
TIME.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
FORECASTER CONFIDENCE LEVELS...

  LOW...LESS THAN 30 PERCENT.
  MODERATE...30 TO 60 PERCENT.
  HIGH...GREATER THAN 60 PERCENT.

OVERVIEW...
 * MODERATE CONFIDENCE INTO SATURDAY MORNING...
 * HIGH CONFIDENCE SATURDAY AFTERNOON INTO SUN...

TODAY...
MIX OF VFR/MVFR ACROSS THE AREA AS IFR CIGS ARE LOCATED ACROSS THE
IMMIDATE SOUTH COAST...CAPE AND ISLANDS. EXPECT CONDITIONS TO
REMAIN PERSISTENT AND EVEN DROP TO MVFR/IFR ACROSS ALL SITES.
GUSTY WINDS WILL PREVAIL OUT OF THE SW REACHING 25-35 KTS.

TONIGHT INTO SAT MORNING...
COLD FRONT WILL SWEEP THROUGH DROPPING CIGS TO MVFR/IFR IN HEAVY
SHOWERS AND THUNDER. VSBYS MAY BE REDUCED IF MVFR CONDITIONS WITH
POSSIBLE IFR/LIFR IN THE HEAVIEST DOWNPOURS. HEAVIEST PRECIP WILL
MOVE THROUGH WEST TO EAST AROUND 02Z AND CLEAR OUT BY 12/14Z SAT.
GUSTY WINDS OUT OF THE SOUTH MAY REACH 35 KTS OR ABOVE AHEAD OF
THE FRONT BEFORE SWITCHING TO THE NW BEHIND THE FRONT. LOW LEVEL
JET OVERNIGHT WILL YIELD TO 50-60KTS AT 1-2 KFT...CAUSING LLWS
CONCERNS. CONDITIONS WILL SLOWLY IMPROVE FROM WEST TO EAST SAT
MORNING.

SAT AFTERNOON INTO SUN MORNING...
HIGH CONFIDENCE. LINGERING MVFR SAT AFTERNOON WILL LIFT TO VFR BY
THE EVENING LASTING THROUGHOUT THE NIGHT.

KBOS TERMINAL...MODERATE CONFIDENCE.
HIGH CONFIDENCE ON TIMING OF FRONT AND PRECIP. LOWER CONFIDENCE ON
CIG HEIGHTS AND CATEGORICAL CHANGES TONIGHT.

KBDL TERMINAL...MODERATE CONFIDENCE.
HIGH CONFIDENCE ON PRECIP TIMING...LOWER CONFIDENCE ON CATEGORICAL
CHANGES. .

OUTLOOK...SUNDAY THROUGH TUESDAY...

SUNDAY-MONDAY...HIGH CONFIDENCE. VFR. LIGHT WINDS SUNDAY.
INCREASING EAST WINDS MONDAY WITH GUSTS TO 25 KNOTS ALONG THE CAPE
AND ISLANDS/SOUTH COAST.

TUESDAY...MODERATE CONFIDENCE.
CONDITIONS LOWERING DURING THE DAY WITH MVFR/IFR POSSIBLE
ESPECIALLY RI AND SOUTHEAST MASS.

&&

.MARINE...
FORECASTER CONFIDENCE LEVELS...

  LOW...LESS THAN 30 PERCENT.
  MODERATE...30 TO 60 PERCENT.
  HIGH...GREATER THAN 60 PERCENT.

OVERVIEW...MODERATE CONFIDENCE THROUGH SATURDAY.

SOUTHERLY WINDS WILL GUST IN EXCESS OF 25 KTS AHEAD OF A COLD FRONT
WHICH WILL SWEEP ACROSS THE WATERS AFTER MIDNIGHT TONIGHT INTO THE
EARLY MORNING HOURS SATURDAY. IT IS QUITE PLAUSIBLE THAT THERE WILL
BE A BRIEF PERIOD OF GALE FORCE GUSTS IMMEDIATELY AHEAD OF THE COLD
FRONT. WILL CONTINUE WITH SMALL CRAFT ADVISORIES. WAVE HEIGHTS OF 8
TO 10 FEET OUT ON THE OUTER WATERS. SHOWERS AND THUNDERSTORMS
EXPECTED AHEAD OF THE COLD FRONT WHICH WILL LIKELY RESULT IN SOME
TEMPORARY VISIBILITY RESTRICTIONS.

BEHIND THE COLD FRONT...WINDS WILL BACK OUT OF THE WEST-NORTHWEST
CONTINUALLY GUSTING IN EXCESS OF 25 KTS. SMALL CRAFT ADVISORIES HAVE
BEEN EXTENDED ACCORDINGLY AS SEAS WILL STILL REMAIN CHOPPY AND
GREATER THAN 5 FEET.

OUTLOOK...SATURDAY NIGHT THROUGH TUESDAY...

MODERATE CONFIDENCE SATURDAY NIGHT TO MONDAY. LOW CONFIDENCE
TUESDAY.

SATURDAY NIGHT...SMALL CRAFT ADVISORY LIKELY FOR WIND AND SEAS
WITH GUSTS 25 KNOTS AND SEAS 5 FEET OR HIGHER.

SUNDAY...DIMINISHING WIND. LINGERING 5 FOOT SEAS EARLY ON THE
OUTER WATERS...SUBSIDING.

MONDAY...INCREASING EAST WIND WITH POTENTIAL SMALL CRAFT WINDS AND
SEAS IN THE AFTERNOON ESPECIALLY ACROSS THE SOUTHERN WATERS.

TUESDAY...SEAS AT OR ABOVE 5 FEET ACROSS THE OPEN WATERS. EAST
WINDS GUSTING AROUND 20 KNOTS. SHOWERS.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
MA...NONE.
NH...NONE.
RI...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 8 PM EDT SATURDAY FOR ANZ232>234.
     SMALL CRAFT ADVISORY UNTIL 8 AM EDT SATURDAY FOR ANZ230-236.
     SMALL CRAFT ADVISORY UNTIL 2 PM EDT SATURDAY FOR ANZ231-251.
     SMALL CRAFT ADVISORY UNTIL 8 PM EDT SATURDAY FOR ANZ235-237-
     250-254>256.

&&

SYNOPSIS...BELK/SIPPRELL
NEAR TERM...DUNTEN/SIPPRELL
SHORT TERM...SIPPRELL
LONG TERM...BELK
AVIATION...BELK/DUNTEN
MARINE...BELK/SIPPRELL

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
438 AM EDT FRI APR 19 2013

CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-200845-
HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA-
EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA-
WESTERN ESSEX MA-EASTERN ESSEX MA-WESTERN HAMPSHIRE MA-
WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-
SOUTHERN WORCESTER MA-WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-
SUFFOLK MA-EASTERN NORFOLK MA-NORTHERN BRISTOL MA-
WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-
SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA-NANTUCKET MA-
NORTHERN MIDDLESEX MA-CHESHIRE NH-EASTERN HILLSBOROUGH NH-
WESTERN AND CENTRAL HILLSBOROUGH NH-NORTHWEST PROVIDENCE RI-
SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-BRISTOL RI-
WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
438 AM EDT FRI APR 19 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT...ALL
OF MASSACHUSETTS EXCEPT BERKSHIRE COUNTY...SOUTHERN NEW HAMPSHIRE
AND RHODE ISLAND.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ230>237-250-251-254>256-200845-
BOSTON HARBOR-CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND-
BUZZARDS BAY-RHODE ISLAND SOUND-NARRAGANSETT BAY-BLOCK ISLAND SOUND-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK NATIONAL
MARINE SANCTUARY-MASSACHUSETTS BAY AND IPSWICH BAY-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD AND
NANTUCKET-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT TO
20 NM SOUTH OF BLOCK ISLAND-
438 AM EDT FRI APR 19 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS AND RHODE
ISLAND COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A LOW PROBABILITY OF GALE FORCE SOUTHWEST WIND GUSTS
TONIGHT INTO SATURDAY MORNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.