High Wind Watch 6, NWS Boston/Norton, MA

921 
WWUS71 KBOX 150334
NPWBOX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
1034 PM EST WED DEC 14 2016

MAZ022>024-RIZ008-151145-
/O.CON.KBOX.HW.A.0006.161215T2300Z-161216T0900Z/
BARNSTABLE MA-DUKES MA-NANTUCKET MA-BLOCK ISLAND RI-
INCLUDING THE CITIES OF...CHATHAM...FALMOUTH...PROVINCETOWN...
VINEYARD HAVEN...NANTUCKET...BLOCK ISLAND
1034 PM EST WED DEC 14 2016

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY EVENING
THROUGH LATE THURSDAY NIGHT...

* LOCATION...CAPE COD AND THE ISLANDS.

* WINDS...WEST 30 TO 40 MPH WITH GUSTS UP TO 70 MPH.

* TIMING...STRONGEST WINDS ARE EXPECTED BETWEEN 8 PM THURSDAY 
  AND 4 AM FRIDAY.

* IMPACTS...WEAKENED TREES OR LARGE LIMBS MAY BE DOWNED BY HIGH 
  WINDS IN ADDITION TO POWER LINES. DRIVING WILL BE DIFFICULT IN 
  OPEN AREAS AND ON BRIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WATCH MEANS THE POTENTIAL EXISTS FOR DAMAGING WINDS.
BE PREPARED FOR THE POSSIBILITY OF SCATTERED POWER OUTAGES. DUE
TO THE EXTREME COLD ALSO EXPECTED...MAKE SURE ALTERNATIVE HEATING
SOURCES ARE IN A SAFE AND WELL VENTILATED AREA IN ORDER TO
PREVENT CARBON MONOXIDE POISONING.

&&

$$

CTZ002>004-MAZ002>021-026-RIZ001>007-151145-
/O.CON.KBOX.HW.A.0006.161215T2300Z-161216T0900Z/
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-NORTHERN MIDDLESEX MA-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-
EASTERN KENT RI-BRISTOL RI-WASHINGTON RI-NEWPORT RI-
INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...UNION...
VERNON...PUTNAM...WILLIMANTIC...CHARLEMONT...GREENFIELD...
ORANGE...BARRE...FITCHBURG...FRAMINGHAM...LOWELL...LAWRENCE...
GLOUCESTER...CHESTERFIELD...BLANDFORD...AMHERST...NORTHAMPTON...
SPRINGFIELD...MILFORD...WORCESTER...FOXBOROUGH...NORWOOD...
CAMBRIDGE...BOSTON...QUINCY...TAUNTON...BROCKTON...PLYMOUTH...
FALL RIVER...NEW BEDFORD...MATTAPOISETT...AYER...FOSTER...
SMITHFIELD...PROVIDENCE...COVENTRY...WEST GREENWICH...
EAST GREENWICH...WARWICK...WEST WARWICK...BRISTOL...
NARRAGANSETT...WESTERLY...NEWPORT
1034 PM EST WED DEC 14 2016

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY EVENING
THROUGH LATE THURSDAY NIGHT...

* LOCATION...CONNECTICUT...MASSACHUSETTS AND RHODE ISLAND.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 65 MPH.

* TIMING...STRONGEST WINDS ARE EXPECTED BETWEEN 8 PM THURSDAY 
  AND 4 AM FRIDAY.

* IMPACTS...WEAKENED TREES OR LARGE LIMBS MAY BE DOWNED BY HIGH 
  WINDS IN ADDITION TO POWER LINES. DRIVING WILL BE DIFFICULT IN 
  OPEN AREAS AND ON BRIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WATCH MEANS THE POTENTIAL EXISTS FOR DAMAGING WINDS.
BE PREPARED FOR THE POSSIBILITY OF SCATTERED POWER OUTAGES. DUE
TO THE EXTREME COLD ALSO EXPECTED...MAKE SURE ALTERNATIVE HEATING
SOURCES ARE IN A SAFE AND WELL VENTILATED AREA IN ORDER TO
PREVENT CARBON MONOXIDE POISONING.

&&

$$

FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON

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WWW.FACEBOOK.COM/NWSBOSTON

YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON

069 
WWUS71 KBOX 150849
NPWBOX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
349 AM EST THU DEC 15 2016

MAZ022>024-RIZ008-151700-
/O.UPG.KBOX.HW.A.0006.161215T2300Z-161216T0900Z/
/O.NEW.KBOX.HW.W.0006.161215T2200Z-161216T1000Z/
BARNSTABLE MA-DUKES MA-NANTUCKET MA-BLOCK ISLAND RI-
INCLUDING THE CITIES OF...CHATHAM...FALMOUTH...PROVINCETOWN...
VINEYARD HAVEN...NANTUCKET...BLOCK ISLAND
349 AM EST THU DEC 15 2016

...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM
EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM EST
FRIDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT.

* LOCATION...CAPE COD AND THE ISLANDS.

* WINDS...WEST 30 TO 40 MPH WITH GUSTS UP TO 70 MPH.

* TIMING...STRONGEST WINDS ARE EXPECTED BETWEEN 8 PM THURSDAY 
  AND 4 AM FRIDAY.

* IMPACTS...WEAKENED TREES OR LARGE LIMBS MAY BE DOWNED BY HIGH 
  WINDS IN ADDITION TO POWER LINES. DRIVING WILL BE DIFFICULT IN 
  OPEN AREAS AND ON BRIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WATCH MEANS THE POTENTIAL EXISTS FOR DAMAGING WINDS.
BE PREPARED FOR THE POSSIBILITY OF SCATTERED POWER OUTAGES. DUE
TO THE EXTREME COLD ALSO EXPECTED...MAKE SURE ALTERNATIVE HEATING
SOURCES ARE IN A SAFE AND WELL VENTILATED AREA IN ORDER TO
PREVENT CARBON MONOXIDE POISONING.

A HIGH WIND WARNING IS ISSUED WHEN SUSTAINED WINDS OF 40 MPH ARE
EXPECTED FOR AT LEAST ONE HOUR...WITH GUSTS OF 58 MPH OR GREATER
AT ANY TIME. DAMAGE TO TREES...POWER LINES...AND PROPERTY ARE
POSSIBLE WITH WINDS OF THIS MAGNITUDE. POWER OUTAGES ARE LIKELY.
TAKE ACTION TO SECURE LOOSE OUTDOOR OBJECTS.

&&

$$

CTZ002>004-MAZ002>021-026-RIZ001>007-151700-
/O.UPG.KBOX.HW.A.0006.161215T2300Z-161216T0900Z/
/O.NEW.KBOX.HW.W.0006.161215T2200Z-161216T0900Z/
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-NORTHERN MIDDLESEX MA-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-
EASTERN KENT RI-BRISTOL RI-WASHINGTON RI-NEWPORT RI-
INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...UNION...
VERNON...PUTNAM...WILLIMANTIC...CHARLEMONT...GREENFIELD...
ORANGE...BARRE...FITCHBURG...FRAMINGHAM...LOWELL...LAWRENCE...
GLOUCESTER...CHESTERFIELD...BLANDFORD...AMHERST...NORTHAMPTON...
SPRINGFIELD...MILFORD...WORCESTER...FOXBOROUGH...NORWOOD...
CAMBRIDGE...BOSTON...QUINCY...TAUNTON...BROCKTON...PLYMOUTH...
FALL RIVER...NEW BEDFORD...MATTAPOISETT...AYER...FOSTER...
SMITHFIELD...PROVIDENCE...COVENTRY...WEST GREENWICH...
EAST GREENWICH...WARWICK...WEST WARWICK...BRISTOL...
NARRAGANSETT...WESTERLY...NEWPORT
349 AM EST THU DEC 15 2016

...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM
EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM EST
FRIDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT.

* LOCATION...CONNECTICUT...MASSACHUSETTS AND RHODE ISLAND.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 60 MPH.

* TIMING...STRONGEST WINDS ARE EXPECTED BETWEEN 8 PM THURSDAY 
  AND 4 AM FRIDAY.

* IMPACTS...WEAKENED TREES OR LARGE LIMBS MAY BE DOWNED BY HIGH 
  WINDS IN ADDITION TO POWER LINES. DRIVING WILL BE DIFFICULT IN 
  OPEN AREAS AND ON BRIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WATCH MEANS THE POTENTIAL EXISTS FOR DAMAGING WINDS.
BE PREPARED FOR THE POSSIBILITY OF SCATTERED POWER OUTAGES. DUE
TO THE EXTREME COLD ALSO EXPECTED...MAKE SURE ALTERNATIVE HEATING
SOURCES ARE IN A SAFE AND WELL VENTILATED AREA IN ORDER TO
PREVENT CARBON MONOXIDE POISONING.

A HIGH WIND WARNING IS ISSUED WHEN SUSTAINED WINDS OF 40 MPH ARE
EXPECTED FOR AT LEAST ONE HOUR...WITH GUSTS OF 58 MPH OR GREATER
AT ANY TIME. DAMAGE TO TREES...POWER LINES...AND PROPERTY ARE
POSSIBLE WITH WINDS OF THIS MAGNITUDE. POWER OUTAGES ARE LIKELY.
TAKE ACTION TO SECURE LOOSE OUTDOOR OBJECTS.

&&

$$

FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTONPRECIPITATION

YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/NWSBOSTON

YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON

Area Forecast Discussion
National Weather Service Taunton MA
1010 AM EST Wed Dec 14 2016

.SYNOPSIS...
Developing low pressure southeast of the 40N/70W benchmark this
morning will move rapidly out to sea this afternoon. This will
result in a dry seasonably cool day across southern New England.
A cold front moves across the area Thu morning accompanied by
scattered snow showers and colder temperatures. However a powerful
arctic front barrels through the region Thu evening and overnight
with dangerously temperatures...wind chills and the potential for
damaging winds Thursday night into Fri morning. A wintry mix
early Saturday transitions to rain for the remainder of the
weekend. Turning dry and more seasonable early next week.

&&

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

10 am update...

Short wave from last night along with its attending cloud and rain
shield is now moving offshore. In it's wake modest CAA beginning
to overspread the area on WNW winds 10 to 20 mph. 12z observed ALY
sounding indicates a deep blyr with mixing up to 800 mb. Despite
increasing CAA this well mixed boundary layer will allow temps
this afternoon to rise a few more degs from their 10 am values
into the upper 30s and low 40s...seasonably cold. Previous
forecast captures these details so no major changes with this
update. Earlier discussion below.

===================================================================

Upper flow is zonal by character, but with a closed low from the
Hudson Bay Region of Canada pushing south and creating cyclonic
curvature over the Great Lakes and Northeast the result is several
shortwaves moving through the flow while very cold air sinks into
our area.

One shortwave moves through New England this morning. The models
show a 160 knot jet moving through the flow and across the South
Coast region with the left exit region moving through during this
morning. This may maintain limited support for rain/snow showers
along the South Coast first thing this morning, but then quickly
shifts offshore. This jet will drive the cold front through during
the morning with drier air and clearing skies arriving behind the
front.

Mixing should reach to between 900 and 925 mb today, with temps
at those levels supporting max sfc temps 35 to 45. With temperatures
starting the morning 30-35, we should favor the higher part of the
proposed range. Winds in the mixed layer are forecast around 15
knots but may be a little higher so we will forecast a few gusts
near 20 knots.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/...
Tonight...

Low pressure in Quebec sweeps an arctic cold front through the
region late tonight. This will bring increasing clouds and
increasing low level lapse rates...but limited moisture. So while
there may be a few snow showers around during the Wednesday
overnight, it does not look widespread. However, as the previous
shift noted, a quick coating of snow in an overnight squall could
make the Thursday morning commute painful for some. Increasing
west-southwest winds -8C air moving over 8-10C sea water could
also generate ocean snow bands along the South Coast and Islands.

The cold core is only starting to move in toward morning, so we
stayed close to model values in the upper teens and 20s.

Thursday...

Upper flow tries to turn move W-NW behind the arctic front. This
brings initial cold advection overhead and supports mixing through
at least 700 mb, possibly to 600 mb. Temps at that level would be
like -18C to -20C at 850 mb... supporting max temps in the 20s and
possibly a little cooler in the hills. This is close to the
morning low, so expect max temps in the morning with steady or
slowly falling temps in the afternoon. Mixing will also bring
strong wind gusts from well up in the atmosphere. This will need
to be monitored for a possible advisory.

Finally, the air-ocean differential may be close to 30C in places.
This suggest ocean-effect snow showers developing off the coast. A
WNW or NW wind would suggest mainly offshore. This wind direction
will need to be monitored.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
*/ Highlights...

 - Dangerously cold Thursday night into Friday morning
 - Strong to damaging winds Thursday night into early Friday
 - Wintry weather forecast Saturday
 - A milder trend going into next week

*/ Overview...

Main weather signal is the negative to positive phase shift of both
the EPO / WPO . Initially negative, parent to the La Nina and -PNA,
higher heights over the NE Pacific / AK yielding deep troughing over
the heart of the CONUS introduces cross-polar flow ushering shots of
Arctic air S out of Canada into the N/NE CONUS. This is what gets us
the dangerously cold conditions Thursday night into Friday. But with
the shift towards +WPO / +EPO, H5 flow becomes less amplified, more
zonal. Westerlies increase off the Pacific that usher milder air and
yield a general mid to upper level height rises across the CONUS. A
warmer pattern as colder, Arctic air is locked up across N Canada
into next week. Corroborating signals per forecast NAO/AO becoming
largely positive. Less intrusion of colder air and absence of a down-
stream block, all signs point to a progressive pattern across the NE
CONUS, again milder as well with a storm track more or less across
the Great Lakes region (inside-runners). Any wintry outcomes mainly
associated with over-running before changing over to all rain. Will
highlight the details in the discussion below.

*/ Daily Discussion...

Thursday night through Friday...

If you don't know it already, it is going to be dangerously cold
Thursday night into Friday morning. Cross-polar flow pushes H85
temperatures to around -20 to -25C Friday morning as a polar low
digs across SE Canada, very cold air we have not seen the likes of
since Valentine's Day earlier this year. Good agreement among all
guidance, probabilistics and analogs of lows in the single digits to
a few degrees below-zero. Toss in the anticipated blustery NW winds
and wind chills of 10 to 20 below zero are forecast. At a minimum,
wind chill advisory headlines will be needed across interior S New
England with the possibility of warnings for the high terrain of the
Berkshires.

Speaking of winds, with strong cold air advection will undoubtedly
mix out to around H7 / 10 kft, to the top of the tropopause where
winds are forecast to be around category 1 hurricane force. This the
result of the isallobaric wind which is proportional to the gradient
of pressure change, a gradient which will be its strongest around
midnight Friday throughout the mixed layer up to 10 kft in response
to the rapid pressure increase behind the bombing low over the Gulf
of St. Lawrence (interrogate H85-7 12-hour height changes especially
as well as 3- and 6-hour surface pressure rises). The rapid pressure
increase into our area, a sign of strong winds, there's a fair amount
of probabilistic guidance along with BUFKIT profiles to suggest
that at least across the high terrain and along the coast would
reach wind advisory criteria. Just based on the consensus of
forecast guidance, will forecast 30 to 40 mph gusts with the
likelihood of 35 to 45 mph gusts along the immediate shore,
potentially as high as 50 to 55 mph across the Cape and Islands.
Sustained winds of up to 25 to 35 mph especially for those areas
highlighted of seeing strongest gusts. Growing confidence of wind
advisory headlines with possible high wind warnings. Am greatly
concerned for inflatable holiday lawn ornaments.

As to snow squalls, using the associated parameter, looking at the
possibility of activity Wednesday night into Thursday given higher
moisture content around H925 within the steep, unstable profile with
increasing 0-2 km winds as the crux of the mid-level vortex energy
associated with the polar low sweeps across the NE CONUS along with
cold air advection. A lack of sufficient moisture below H925, have
higher confidence of outcomes over high terrain and across warmer
ocean waters. With any squall activity, undoubtedly convective,
anticipate impacts of reduced visibilities, down to near white-out,
with modest snow accumulations. A first-guess, signals are somewhat
weak across the interior but more robust over the ocean, potentially
across the Cape and Islands given the greater abundance of low-level
moisture. Will have to monitor these areas closely into Thursday
morning. May see another round late Thursday into Thursday night
with the last of the polar low energy and some localized higher H925
theta-E spinning across the region.

Friday night through Sunday...

Initial snows transitioning to rain. Open wave disturbance, early on
will see the bulk of forcing through the low-mid levels associated
with isentropic over-running ahead of a warm frontal boundary. Along
with frontogenetical forcing and moist convergence, some mid-upper
level support via lead vortmax energy and jet dynamics, anticipate a
good forward thump of outcomes with maritime-tropical fetch (pwats
to an inch) over lingering low-level Arctic air possibly maintained
by NE ageostrophic flow. Wet-bulb considerations during top-down
moistening along with snow to liquid ratios as noted by the prior
forecaster, expect snow to gradually change to rain with the non-
diurnal trend as low-levels warm with winds turning S. This as low
pressure emerges out of the Plains tracking N/E as an inside runner
across the E Great Lakes region, noting the lack of Canadian high
pressure to the N. Will see a second thump of mainly wet-weather
during the day Sunday along a sweeping cold front (a lull possible
in-between for Saturday night).

Growing confidence of advisory level snows of at or greater than 3
inches for areas of N/W CT, N/W/Central MA, and possibly NW RI. That
and possible warning level snows for the N/W high terrain. But a
note of caution as ensemble members still exhibit spread in possible
solutions ranging from sub-advisory to warning level for particular
points. While there is growing confidence it is not to say that it
is absolutely expected. There is a level of uncertainty. Best advice
is to be aware for accumulating snows going into Saturday and that
most places are likely going to see an inch of accumulation. It only
takes an inch to make untreated surfaces slick and slippery. Also
still some concern of a brief period of a wintry mix in the form of
sleet / freezing rain over interior valleys. Some indication of over-
riding warmer air over trapped shallow cold air. Uncertainty as to
the morphology of the expected warm front to lift across the region
over time Saturday into Saturday night. Forecast is still several
days out. Should iron out the details with time.

Next week...

Going with ensemble means, expect high pressure with more seasonable
conditions given lesser intrusion of Arctic air, dampened by the
phase shift to +EPO / +WPO. Anticipate with the N/NW wind pattern of
scattered to broken clouds either off the Great Lakes and/or ocean-
induced. Magnitude of the cold being less, not expecting much in the
way of shower activity, thinking the forecast period will be dry
given the near 1040 high over the SE CONUS. Could however see an
inside-runner storm system for the late week period. Initial wintry
weather precipitation types with leading over-running setup followed
by the introduction of warmer air from the S and subsequent
transition to rain.

&&

.AVIATION /15Z WEDNESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Thursday/...High confidence.

15z update...No major updates. Forecast is on track.

Today...
VFR. Lingering SCT-BKN MVFR over the Cape and Islands this morning.
W winds 10 to 20 knots.

Tonight...
VFR except widely scattered MVFR in snow showers late. W/SW winds
gusting to 25 kt late.

Thursday...
VFR. MVFR/IFR just offshore in ocean effect snow showers.

KBOS TAF...High confidence in TAF.

KBDL TAF...High confidence in TAF.

Outlook /Thursday Night through Sunday/...

Into Friday...High confidence.

VFR. SCT -SN/SN possible with IFR vsbys, minor snow accumulations,
especially across the high terrain and over the Cape and Islands.
Also increasing NW winds gusting 30 to 40 kts with the potential for
gusts up to 55 kts, especially across the high terrain and along the
immediate shore. Winds and -SN/SN threat diminish through the day on
Friday.

Saturday into Sunday...Moderate confidence.

Lowering to LIFR. Initial onset of IFR SN with N winds across the
interior and S winds along the coast. Will see a transition to RA
with visibilities improving. Snow accumulations along runways is
anticipated, especially over N/W/Central portions of S New England.
A lull Saturday night then a shot of rain Sunday with conditions
improving late.

Monday...Moderate confidence.

VFR. NW winds. MVFR possible across E MA especially the Outer Cape
with ocean-effect.

&&

.MARINE...
Forecaster Confidence Levels.

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Thursday/...High confidence.

10 am update...No major changes to the forecast which is on
track.

Today...

WNW winds 10-20 kt. Seas less than 5 feet.

Tonight...

Arctic cold front approaches with WSW winds increasing to 32 kt
toward daybreak. The increased wind will build seas to 5 feet
mainly on the outer waters. Snow showers possible toward morning.

Thursday...

The Arctic front moves through, and winds increase out of the
West-Northwest. Good potential for 35-40 knot winds, which we will
use in the forecast. Worst case scenario would be closer to 50
knots as incoming cold air may draw strong winds down from 2-3
miles above the surface. The strong winds will build seas with 5
to 8 feet on the exposed waters. A Gale Watch remains in effect.

Outlook /Thursday Night through Sunday/...

Friday...High confidence.

Gales and possible storm-force winds developing Thursday night and
continuing through early Friday. Wave heights building 8 to 10 feet
on the outer waters. Water temperatures remain warm so there is less
of a threat of freezing spray. Winds and seas diminishing through
the day Friday. At a minimum, gale warnings likely.

Saturday into Sunday...Moderate confidence.

Increasing S winds ahead of a storm system sweeping across interior
NE CONUS. Gusts up to 30 kts possible which will push seas back up
to 8 to 10 feet on the outer waters. Rain anticipated which could
result in visibility restrictions. Improving conditions going into
Sunday as winds back out of the W/NW, still breezy.

Monday...Moderate confidence.

NW winds diminishing. Seas allowed to subside. Ocean-effect showers
possible across the outer waters with minimal impact.

&&

.TIDES/COASTAL FLOODING...

10 AM update...surge values up to 0.5 ft at 10 am along the
eastern MA coast. These values will diminish as WNW increase and
weak pressure rises approach from the west. Nonetheless astro
tides will be high enough to yield very minor inundation of ocean
water into the most vulnerable locations along the immediate
eastern MA shoreline. Earlier discussion below.

==================================================================

Astronomical high tide at Boston Tuesday morning was 12.1 ft and
resulted in minor/nuisance flooding. The high tide this morning
will be 12.3 ft. So expecting a repeat performance of very minor
to nuisance flooding in the most vulnerable locations along the
immediate eastern MA shoreline.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Gale Watch from late tonight through Friday morning for
     ANZ230>237-250-251-254>256.

&&

SYNOPSIS...WTB/Sipprell
NEAR TERM...WTB/Nocera/Sipprell
SHORT TERM...WTB
LONG TERM...Sipprell
AVIATION...WTB/Nocera/Sipprell
MARINE...WTB/Nocera/Sipprell
TIDES/COASTAL FLOODING...Nocera

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
428 AM EST WED DEC 14 2016

CTZ002>004-MAZ002>024-026-RIZ001>008-150930-
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-NORTHWEST PROVIDENCE RI-
SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-BRISTOL RI-
WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
428 AM EST WED DEC 14 2016

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

.DAY ONE...TODAY AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THURSDAY NIGHT INTO FRIDAY MORNING...DANGEROUSLY COLD WIND CHILLS
OF 10 TO 25 BELOW ZERO ARE FORECAST AS LOWS DROP INTO THE SINGLE
DIGITS TO SEVERAL DEGREES BELOW-ZERO AND NORTHWEST WINDS GUST 35
TO 45 MPH WITH A RISK OF 50 TO 60 MPH GUSTS. A COMBINATION OF
WIND AND WIND CHILL HEADLINES IS LIKELY.

SATURDAY...ACCUMULATING SNOW IS FORECAST POTENTIALLY REACHING
ADVISORY LEVEL OF AT LEAST 3 INCHES OVER MUCH OF INTERIOR S NEW
ENGLAND. POSSIBLE WARNING LEVEL SNOWS OF AT LEAST 6 INCHES FOR THE
N/W HIGH TERRAIN OF MA. THIS PRIOR TO TRANSITIONING TO RAIN LATE
SATURDAY INTO SATURDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ230>237-250-251-254>256-150930-
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-
428 AM EST WED DEC 14 2016

...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING...

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

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WATCH.

EARLY FRIDAY...THERE IS A HIGH PROBABILITY OF NW GALES THOUGH
DIMINISHING. LOW PROBABILITY OF MODERATE FREEZING SPRAY OVER THE
WATERS ADJACENT TO SHORES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON

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WWW.FACEBOOK.COM/NWSBOSTON

YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON