Small Craft Advisory 143, NWS Boston/Norton, MA

677 
WHUS71 KBOX 141459
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
959 AM EST Thu Dec 14 2017

ANZ230-142130-
/O.CON.KBOX.SC.Y.0143.171214T2000Z-171215T0600Z/
Boston Harbor-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 1 AM EST FRIDAY...

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 25 
  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.

&&

$$

ANZ250-254-142130-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt. Seas 4 to 7 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.

&&

$$

ANZ255-256-142130-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
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-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 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.

&&

$$

ANZ231-251-142130-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T0900Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY...

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 25 
  kt. Seas 2 to 4 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.

&&

$$

ANZ235-237-142130-
/O.CON.KBOX.SC.Y.0143.171214T2000Z-171215T0900Z/
Rhode Island Sound-Block Island Sound-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 4 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 3 to 6 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.

&&

$$

ANZ232>234-142130-
/O.CON.KBOX.SC.Y.0143.171214T2000Z-171215T0600Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
959 AM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 1 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 2 to 4 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.

&&

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

148 
WHUS71 KBOX 142023
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
323 PM EST Thu Dec 14 2017

ANZ230-142130-
/O.CAN.KBOX.SC.Y.0143.000000T0000Z-171215T0600Z/
Boston Harbor-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY IS CANCELLED...

The National Weather Service in Taunton has cancelled the Small
Craft Advisory.

$$

ANZ250-254-150330-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 4 to 7 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.

&&

$$

ANZ255-256-150330-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
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-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 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.

&&

$$

ANZ231-251-150330-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T0900Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY...

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 25 
  kt. Seas 2 to 4 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.

&&

$$

ANZ235-237-150330-
/O.CON.KBOX.SC.Y.0143.000000T0000Z-171215T0900Z/
Rhode Island Sound-Block Island Sound-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 3 to 6 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.

&&

$$

ANZ232>234-150330-
/O.CON.KBOX.SC.Y.0143.000000T0000Z-171215T0600Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
323 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 2 to 4 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.

&&

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

154 
WHUS71 KBOX 150148
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
848 PM EST Thu Dec 14 2017

ANZ230-150800-
/O.EXB.KBOX.SC.Y.0142.000000T0000Z-171215T0800Z/
Boston Harbor-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EST FRIDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect until 3 AM EST Friday.

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 25 
  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.

&&

$$

ANZ250-254-151000-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...West winds 15 to 25 kt. Seas 4 to 7 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.

&&

$$

ANZ255-256-151000-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
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-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 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.

&&

$$

ANZ231-251-150900-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T0900Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY...

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 25 
  kt. Seas 2 to 4 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.

&&

$$

ANZ235-237-150900-
/O.CON.KBOX.SC.Y.0143.000000T0000Z-171215T0900Z/
Rhode Island Sound-Block Island Sound-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  25 kt. Seas 3 to 6 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.

&&

$$

ANZ232>234-150600-
/O.CON.KBOX.SC.Y.0143.000000T0000Z-171215T0600Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
848 PM EST Thu Dec 14 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST FRIDAY...

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  25 kt. Seas 2 to 4 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.

&&

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

281 
WHUS71 KBOX 150918
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
418 AM EST Fri Dec 15 2017

ANZ231-251-151030-
/O.EXP.KBOX.SC.Y.0142.000000T0000Z-171215T0900Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
418 AM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY HAS EXPIRED...

$$

ANZ235-237-151030-
/O.EXP.KBOX.SC.Y.0143.000000T0000Z-171215T0900Z/
Rhode Island Sound-Block Island Sound-
418 AM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY HAS EXPIRED...


$$

ANZ250-254-151200-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
418 AM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST THIS
MORNING...

* WINDS AND SEAS...Northwest winds 10 to 15 kt with gusts up to 
  25 kt. Seas 3 to 5 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.

&&

$$

ANZ255-256-151200-
/O.CON.KBOX.SC.Y.0142.000000T0000Z-171215T1200Z/
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-
418 AM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST THIS
MORNING...

* WINDS AND SEAS...Northwest winds 10 to 15 kt. Seas 3 to 6 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.

&&

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

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
314 AM EST Thu Dec 14 2017

.SYNOPSIS...
A fast moving low pressure will track south of New England this
morning bringing a light snowfall to the south coast and
especially the Islands. Cold persists into the weekend with a
chance of snow showers Friday night into Saturday. Blustery and
cold for Sunday but the beginning of a milder trend Monday ahead
of which there's the possibility of a mixed wintry precipitation
event. Quiet and dry with an ebb and flow pattern during the
week up till late Thursday into Friday during which time there's
the possibility of another mixed wintry precipitation event.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
*** Light snow accumulations likely immediate south coast and
Cape/Islands this morning ***

Fairly robust mid level shortwave and attending sfc low tracks
south of New Eng this morning. Large scale synoptic forcing
assocd with this shortwave and left exit of the upper jet will
combine with an area of low level frontogenesis to bring modest
omega to the south coast and Islands. Cross sections indicate
this forcing for ascent punches through favorable DGZ 12-16z
with some instability above this layer which should bring a
brief period of light to moderate snow this morning to the south
coast and Islands. The limiting factor is dry air in low levels
which will erode initial snowfall. Dewpoints currently in the
single numbers across SNE, but dewpoints are rising along the
immediate south coast and Islands and light snow is breaking out
along the CT coast.

Used a blend of global guidance and HREF ensemble guidance for QPF
with 15-20:1 snow ratios to derive snowfall. Not much change from
previous forecast with potential for 1-2 inches along the south
coast and 2-3" over the islands. May see a coating to less than an
inch up to BDL-PVD-TAN corridor, with just some flurries to the
north where low level dry air is more pronounced with sharp
drop off in omega.

Snow will exit the Cape/Islands by midday with gradual clearing
and increasing sunshine moving in from NW to SE during the
afternoon. Another unseasonably cold day with highs mostly 25-30
degrees with some lower 30s near the south coast. Becoming
blustery in the afternoon with WNW gusts 20-30 mph developing
making it feel much colder.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/...
Tonight...
Clear skies and diminishing wind as high pres moves to the mid
Atlc coast with ridging extending into New Eng. This will result
in good radiational cooling which will be enhanced by fresh
snow cover near the coast. Lows dropping into the single
numbers, except teens near the coast.

Friday...
Next mid level trough and shortwave approaches from the west as
coastal low pres develops well to the south. Sunshine will
give way to increasing clouds in the afternoon as the column
moistens. Modest large scale forcing develops late in the day
ahead of the mid level trough with best chance for any late day
snow showers across SE New Eng assocd with a weak inverted
trough and increased low level moisture. Still rather cold with
925 mb temps -8 to -10C which will yield another day with highs
mostly in the 20s, but winds will be lighter and less of a
factor.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
*/ Highlights...

 - Light snow showers possible Friday night into Saturday
 - Cold and blustery Saturday night into Sunday
 - Possible mixed precipitation Sunday night through Monday night
 - Perhaps quiet, cold until Thursday night into Friday
   with another mixed precipitation event

*/ Overview...

Interpreting through late December. Considerable forecast warming in
the stratosphere, polar low / night-time jet displaced to the other
side of the N hemisphere subsequent of noteworthy anomalous ridging
across Northern N America. Beneath which warm air continues to surge
into the Arctic from the NW Pacific (with perhaps MJO contributions)
and the NW Atlantic displacing colder air S where it becomes bowled
up across NE Asia / NE N America. Ensemble means continue to signal
an active weather pattern with an amplified H5 ridge-trof pattern
over the CONUS, anomalous H85 T warming over the N Pacific with cold
anomalies continually reloaded over Central/E N America, however a
trend towards higher heights / surface mean sea level pressure with
stratospheric cross-polar flow shifting into NW Europe.

Making sense of it all, NW Pacific disturbances translating E across
the CONUS seemingly look to flatten the H5 pattern, lock colder air
N for a time, the NE CONUS falling into the transitional zone of air-
masses before colder air reloads and surges S again. An ebb and flow
setup however not barred from N shots of colder air, the lack of S-
stream dominance. Yet a trend of higher heights as signaled from the
ensemble means, cold shots may not be as deep, storm development may
not be so pronounced long-term. Perhaps La Nina signals are starting
to emerge across N America with a lesser pronounced H5 trof pattern
over Central/E N America downstream of stout ridging / warmth over
the NW Pacific.

Tough to get down on the details and specifics, taking a broad view
approach with the discussion above. Will hit on any threats/impacts
in the details below. With perhaps a flatter pattern evolving and
the lack of downstream traffic over the N Atlantic, the move into a
zone of transition between the airmasses as noted above, as forecast
guidance suggests, could end up in a regime of quick-moving systems
with mixed precipitation type outcomes that later deepen downstream
and yield that reloading shot of colder air, yet that colder air not
as deep, perhaps simply swiping the NE CONUS more to the N.

*/ Discussion...

Friday through Saturday...

Cold, blustery at times, chance of snow showers Friday night into
Saturday. A nod to ensemble means for 24-hour rainfall probabilities
in excess of 0.01 inches as N-stream clipper energy translates to a
dominant S-stream disturbance across the offshore baroclinic front.
Yet leaning very light outcomes. Lack of ascent within moist snow
growth regions parent with the positively-tilted H5 trof undergoing
neutral transition along the surface transition boundary. It isn't
till better mid-level curvature and ejecting vortmax above the S-
stream can get things going, in this instance further downstream.
Leaning snow accumulations along the N/W slopes of high terrain
given orographic support, and along the SE coast as energy / ascent
begins to come together before ejecting out to sea. Highest snow
accumulations possibly over an inch for S/SE coast, especially over
the Islands and Outer Cape. Visibility impacts, perhaps some slick
road conditions. Behind the disturbance, winds kick up, colder air
drives back in, wind chills drop back down into the single digits
Sunday morning, lows in the teens.

Sunday into Monday...

Potential mixed precipitation event. Ascent overall light, seemingly
quasi-parallel flow along the lifting warm front. Above a cold air
damming signature with an indication of northerly ageostrophic flow,
the surface high to the N however a weaker low over the Great Lakes,
could see a period of freezing rain / drizzle centered around late
Sunday night into early Monday morning, especially in the interior
sheltered valleys where cold will be more difficult to dislodge. A
nod again to ensemble mean for 24-hour rainfall probabilities in
excess of 0.01 inches which is roughly 70 percent or greater. Again
light outcomes but enough to potentially make for hazardous travel
and could yield WINTER WEATHER ADVISORIES for a trace of ice. Some
question as to how quickly the warm front will lift N and how long
threats / impacts may linger. Could hold through Monday evening. A
low confidence forecast given poor handling via operational guidance
on individual upstream waves.

Tuesday onward...

Leaning a flatter, progressive flow regime with transitioning air-
masses. With any additional waves will be looking for potential
mixed precipitation events with the ebb and flow of 2m temperatures.
Weaker energy ejecting E and deepening, expecting behind each system
the return of colder conditions ushered by breezy N/W winds. Lack of
confidence in the forecast beyond 96 hours (which does include the
Sunday into Monday timeframe). In leaning with ensemble means, after
the early week disturbance, our next event may not occur until late
Thursday into Friday, an initial cold blustery pattern transitioning
warmer, more seasonable in-between.

&&

.AVIATION /08Z THURSDAY THROUGH MONDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Friday/...High confidence.

Through 12z...
Areas of MVFR developing near the south coast 09-12z as light
snow develops. Localized IFR vsbys.

Today...High confidence.
Period of snow with MVFR/IFR conditions moves along the south
coast and Cape/Islands 12-16z. Northern edge of MVFR BDL-PVD
with areas of IFR to the south, especially Cape/Islands. Mainly
VFR cigs along and north of BAF-ORH-BOS. Improving conditions
this afternoon with gradual clearing from NW to SE. WNW gusts
20-25 kt develop in the afternoon, strongest higher terrain.

Tonight...High confidence.
VFR. Clear skies and light winds.

Friday...High confidence.
VFR with mid level clouds moving in during the afternoon. Areas
of MVFR cigs developing late afternoon Cape/Islands.

KBOS Terminal...High confidence in TAF. A few flurries possible
this morning but any vsby restrictions should remain to the
south.

KBDL Terminal...Moderate confidence in TAF. Brief MVFR
cigs/vsbys in light snow possible for a few hours this morning,
but lower conditions should remain to the south.

Outlook /Friday Night through Monday/...

Friday Night: Mainly VFR, with areas MVFR possible. Breezy.
Chance SHSN.

Saturday: VFR. Windy with gusts to 30 kt.

Saturday Night: VFR. Windy with areas gusts to 30 kt.

Sunday: Mainly VFR, with local MVFR possible. Slight chance SN.

Sunday Night: Mainly VFR, with areas MVFR possible. Chance SN,
chance RA, slight chance FZRA.

Monday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA, chance SN, slight chance FZRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Short Term /through Friday/...High confidence.

Today...
Diminishing winds through the morning, but WNW winds increase
this afternoon with gusts to 25-30 kt developing. Area of snow
this morning will reduce vsbys, mainly over south coastal
waters. SCA all waters.

Tonight...
Lingering SCA wind gusts in the evening then diminishing winds
overnight as high pres builds in from the west.

Friday...
NW winds shift to the SW in the afternoon. Speeds below 20 kt
with seas below SCA.

Outlook /Friday Night through Monday/...

Friday Night: Low risk for Small Craft Advisory winds with
local gusts up to 30 kt. Areas of seas approaching 5 ft. Chance
of rain showers, chance of snow showers.

Saturday: Low risk for gale force winds with gusts up to 35 kt.
Areas of rough seas. Slight chance of rain showers, slight
chance of snow showers.

Saturday Night: Low risk for gale force winds with gusts up to
35 kt. Local rough seas.

Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.

Sunday Night through Monday: Winds less than 25 kt. Chance of
rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 AM EST this morning for ANZ231-
     232-235-237-251.
     Small Craft Advisory until 4 AM EST early this morning for
     ANZ230-233-234.
     Small Craft Advisory until 3 AM EST early this morning for
     ANZ236.
     Small Craft Advisory until 7 AM EST Friday for ANZ250-254>256.

&&

SYNOPSIS...KJC
NEAR TERM...KJC
SHORT TERM...KJC
LONG TERM...Sipprell
AVIATION...KJC/Sipprell
MARINE...KJC/Sipprell

Hazardous Weather Outlook
National Weather Service Taunton MA
430 AM EST Wed Dec 13 2017

MAZ002>006-008>018-020-021-026-RIZ001>007-140930-
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western 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-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-
430 AM EST Wed Dec 13 2017

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for most of Massachusetts except
Berkshire county and Rhode Island.

.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.

   Wind Advisory.

Periods of light snow will develop overnight tonight across
Rhode Island and southeast Massachusetts. Untreated roadways may
become locally slippery with any new snow cover, especially during
the early Thursday morning commute.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Light snow will taper off across south coastal areas by midday
Thursday. However, there may still be some slippery roadways across
the region with cold temperatures in place.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ007-019-022>024-RIZ008-140930-
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA-
Nantucket MA-Block Island RI-
430 AM EST Wed Dec 13 2017

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 10 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for eastern Massachusetts and
southern Rhode Island.

.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.

   Wind Advisory.

Periods of light snow will develop across south coastal Massachusetts
and coastal Rhode Island overnight tonight. Untreated roadways may
become locally slippery with any new snow cover, especially during
the early Thursday morning commute.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Light snow will taper off across south coastal areas by midday
Thursday. However, there may still be some slippery roadways across
the region with cold temperatures in place.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

CTZ002>004-140930-
Hartford CT-Tolland CT-Windham CT-
430 AM EST Wed Dec 13 2017

This Hazardous Weather Outlook is for northern Connecticut.

.DAY ONE...Today and Tonight.

Westerly wind gusts are forecast as high as 40 to 45 mph the
strongest of which are likely across the high terrain. Isolated
downed tree and/or tree limbs are possible.

Periods of light snow will develop across northern Connecticut
overnight tonight. Untreated roadways may become locally slippery
with any new snow cover, especially during the early Thursday
morning commute.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Light snow will taper off by mid morning Thursday across northern
Connecticut. However, there may still be some slippery roadways
across the region with cold temperatures in place.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ255-256-140930-
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-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT UNTIL 3 AM EST THURSDAY...

This Hazardous Weather Outlook is for Massachusetts coastal waters
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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ250-254-140930-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 3 AM EST
THURSDAY...

This Hazardous Weather Outlook is for Massachusetts 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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230-231-251-140930-
Boston Harbor-Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 1 AM EST
THURSDAY...

This Hazardous Weather Outlook is for Massachusetts 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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ232-235-237-140930-
Nantucket Sound-Rhode Island Sound-Block Island Sound-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...

This Hazardous Weather Outlook is for Massachusetts coastal waters
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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ236-140930-
Narragansett Bay-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 9 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for 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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ233-234-140930-
Vineyard Sound-Buzzards Bay-
430 AM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT FROM 8 AM THIS MORNING TO 1 AM EST
THURSDAY...

This Hazardous Weather Outlook is for Massachusetts 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 Warning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
1125 PM EST WED DEC 13 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1028 AM     NON-TSTM WND GST HAMPTON                 41.78N  72.05W
12/13/2017  M53 MPH          WINDHAM            CT   HAM RADIO

            HAM RADIO

1125 AM     NON-TSTM WND DMG KINGSTON                41.47N  71.52W
12/13/2017                   WASHINGTON         RI   AMATEUR RADIO

            MEDIUM SIZED TREE DOWN ACROSS WIRES ON HILLTOP AVENUE

1145 AM     NON-TSTM WND DMG NORWELL                 42.17N  70.78W
12/13/2017                   PLYMOUTH           MA   AMATEUR RADIO

            LARGE TREE DOWN ACROSS MAIN STREET

0120 PM     NON-TSTM WND DMG GOSHEN                  42.43N  72.80W
12/13/2017                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON WIRES ON CONWAY ROAD NEAR THE CONWAY LINE

0152 PM     NON-TSTM WND GST GOSHEN                  42.44N  72.80W
12/13/2017  M52 MPH          HAMPSHIRE          MA   HAM RADIO

            HAM RADIO

0205 PM     NON-TSTM WND DMG UPTON                   42.17N  71.61W
12/13/2017                   WORCESTER          MA   AMATEUR RADIO

            TREE DOWN ON WIRES ON HARTFORD AVENUE SOUTH

0708 PM     NON-TSTM WND DMG WESTPORT                41.67N  71.10W
12/13/2017                   BRISTOL            MA   AMATEUR RADIO

            TREE DOWN ON DRIFT ROAD

&&

EVENT NUMBER BOX1707741 BOX1707747 BOX1707748 BOX1707743 BOX1707742
BOX1707745 BOX1707746

AED/NMB/EVT