Storm Warning 1, NWS Boston/Norton, MA

502 
WHUS71 KBOX 301948
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
248 PM EST Wed Jan 30 2019

ANZ233>235-237-310400-
/O.EXT.KBOX.GL.W.0008.000000T0000Z-190131T0800Z/
/O.CON.KBOX.UP.Y.0004.190131T0200Z-190201T1200Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
248 PM EST Wed Jan 30 2019

...GALE WARNING NOW IN EFFECT UNTIL 3 AM EST THURSDAY...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 7 AM EST FRIDAY...

* WINDS AND SEAS...West winds 25 to 35 kt with gusts up to 45 
  kt. Seas 6 to 9 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

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 seek safe
harbor prior to the onset of gale conditions.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

ANZ236-310400-
/O.EXT.KBOX.GL.W.0008.000000T0000Z-190131T0400Z/
Narragansett Bay-
248 PM EST Wed Jan 30 2019

...GALE WARNING NOW IN EFFECT UNTIL 11 PM EST THIS EVENING...

* WINDS AND SEAS...West winds 15 to 25 kt with gusts up to 45 
  kt. Waves 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 seek safe
harbor prior to the onset of gale conditions.

&&

$$

ANZ231-232-310400-
/O.EXT.KBOX.SR.W.0001.190130T2200Z-190131T0400Z/
/O.CON.KBOX.UP.W.0002.190131T0300Z-190131T1400Z/
Cape Cod Bay-Nantucket Sound-
248 PM EST Wed Jan 30 2019

...STORM WARNING NOW IN EFFECT UNTIL 11 PM EST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 9 AM EST THURSDAY...

* WINDS AND SEAS...West winds 20 to 30 kt with gusts up to 50 
  kt. Seas 3 to 5 feet.

* FREEZING SPRAY...Heavy Freezing spray expected late tonight 
  into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Storm Warning means winds of 48 to 63 knots are imminent or
occurring. Recreational boaters should remain in port, or take
shelter until winds and waves subside. Commercial vessels should
prepare for very strong winds and dangerous sea conditions, and
consider remaining in port or taking shelter in port until winds
and waves subside.

A Heavy Freezing Spray Warning means heavy freezing spray is
expected to rapidly accumulate on vessels. These conditions can
be extremely hazardous to navigation. The U.S. Coast Guard
advises mariners to check and ensure all life saving devices
remain free of ice. Mariners not trained to operate in these
conditions, or vessels not properly equipped to do so, should
remain in port or avoid the warning area.

&&

$$

ANZ254>256-310400-
/O.EXT.KBOX.SR.W.0001.190130T2200Z-190131T0400Z/
/O.CON.KBOX.UP.Y.0004.190131T0200Z-190201T1200Z/
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-
248 PM EST Wed Jan 30 2019

...STORM WARNING NOW IN EFFECT UNTIL 11 PM EST THIS EVENING...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 7 AM EST FRIDAY...

* WINDS AND SEAS...West winds 25 to 35 kt with gusts up to 50 
  kt. Seas 6 to 11 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Storm Warning means winds of 48 to 63 knots are imminent or
occurring. Recreational boaters should remain in port, or take
shelter until winds and waves subside. Commercial vessels should
prepare for very strong winds and dangerous sea conditions, and
consider remaining in port or taking shelter in port until winds
and waves subside.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

ANZ251-310400-
/O.CON.KBOX.GL.W.0008.000000T0000Z-190131T1200Z/
/O.CON.KBOX.UP.W.0002.190131T0300Z-190131T1400Z/
Massachusetts Bay and Ipswich Bay-
248 PM EST Wed Jan 30 2019

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 9 AM EST THURSDAY...

* WINDS AND SEAS...West winds 20 to 30 kt with gusts up to 45 
  kt. Seas 3 to 6 feet.

* FREEZING SPRAY...Heavy Freezing spray expected late tonight 
  into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heavy Freezing Spray Warning means heavy freezing spray is
expected to rapidly accumulate on vessels. These conditions can
be extremely hazardous to navigation. The U.S. Coast Guard
advises mariners to check and ensure all life saving devices
remain free of ice. Mariners not trained to operate in these
conditions, or vessels not properly equipped to do so, should
remain in port or avoid the warning area.

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 seek safe
harbor prior to the onset of gale conditions.

&&

$$

ANZ250-310400-
/O.CON.KBOX.GL.W.0008.000000T0000Z-190131T1200Z/
/O.CON.KBOX.UP.Y.0004.190131T0200Z-190201T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
248 PM EST Wed Jan 30 2019

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 7 AM EST FRIDAY...

* WINDS AND SEAS...West winds 25 to 35 kt with gusts up to 45 
  kt. Seas 6 to 9 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

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 seek safe
harbor prior to the onset of gale conditions.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

ANZ230-310400-
/O.CON.KBOX.GL.W.0008.000000T0000Z-190131T0600Z/
Boston Harbor-
248 PM EST Wed Jan 30 2019

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

* WINDS AND SEAS...West winds 15 to 25 kt with gusts up to 40 
  kt. Waves Around 2 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 seek safe
harbor prior to the onset of gale 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

055 
WHUS71 KBOX 310321
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1021 PM EST Wed Jan 30 2019

ANZ231-232-311130-
/O.CAN.KBOX.SR.W.0001.000000T0000Z-190131T0400Z/
/O.EXB.KBOX.GL.W.0008.000000T0000Z-190131T1100Z/
/O.CON.KBOX.UP.W.0002.000000T0000Z-190131T1400Z/
Cape Cod Bay-Nantucket Sound-
1021 PM EST Wed Jan 30 2019

...GALE WARNING IN EFFECT UNTIL 6 AM EST THURSDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 9 AM EST
THURSDAY...
...STORM WARNING IS CANCELLED...

The National Weather Service in Boston/Norton has issued a Gale
Warning, which is in effect until 6 AM EST Thursday. The Storm
Warning has been cancelled.

* WINDS AND SEAS...West winds 20 to 30 kt with gusts up to 40 
  kt. Seas 3 to 6 feet.

* FREEZING SPRAY...Heavy Freezing spray expected late tonight 
  into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heavy Freezing Spray Warning means heavy freezing spray is
expected to rapidly accumulate on vessels. These conditions can
be extremely hazardous to navigation. The U.S. Coast Guard
advises mariners to check and ensure all life saving devices
remain free of ice. Mariners not trained to operate in these
conditions, or vessels not properly equipped to do so, should
remain in port or avoid the warning area.

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 seek safe
harbor prior to the onset of gale conditions.

&&

$$

ANZ254>256-311130-
/O.CAN.KBOX.SR.W.0001.000000T0000Z-190131T0400Z/
/O.EXB.KBOX.GL.W.0008.000000T0000Z-190131T1100Z/
/O.CON.KBOX.UP.Y.0004.000000T0000Z-190201T1200Z/
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-
1021 PM EST Wed Jan 30 2019

...GALE WARNING IN EFFECT UNTIL 6 AM EST THURSDAY...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
FRIDAY...
...STORM WARNING IS CANCELLED...

The National Weather Service in Boston/Norton has issued a Gale
Warning, which is in effect until 6 AM EST Thursday. The Storm
Warning has been cancelled.

* WINDS AND SEAS...West winds 25 to 35 kt with gusts up to 40 
  kt. Seas 6 to 11 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

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 seek safe
harbor prior to the onset of gale conditions.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

ANZ230-311130-
/O.CAN.KBOX.GL.W.0008.000000T0000Z-190131T0600Z/
/O.NEW.KBOX.SC.Y.0018.190131T0321Z-190131T2300Z/
Boston Harbor-
1021 PM EST Wed Jan 30 2019

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THURSDAY...
...GALE WARNING IS CANCELLED...

The National Weather Service in Boston/Norton has issued a Small
Craft Advisory, which is in effect until 6 PM EST Thursday. The
Gale Warning has been cancelled.

* WINDS AND SEAS...West winds 15 to 25 kt with gusts up to 35 
  kt. Waves Around 2 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 25 to 33 knots,
or seas 5 feet or greater, are expected to produce hazardous wave
conditions to small craft. Inexperienced mariners, especially
those operating smaller vessels, should avoid navigating in these
conditions.

&&

$$

ANZ236-311130-
/O.CAN.KBOX.GL.W.0008.000000T0000Z-190131T0400Z/
/O.NEW.KBOX.SC.Y.0018.190131T0321Z-190131T1500Z/
Narragansett Bay-
1021 PM EST Wed Jan 30 2019

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EST THURSDAY...
...GALE WARNING IS CANCELLED...

The National Weather Service in Boston/Norton has issued a Small
Craft Advisory, which is in effect until 10 AM EST Thursday. The
Gale Warning has been cancelled.

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 30 
  kt. Waves 2 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 25 to 33 knots,
or seas 5 feet or greater, are expected to produce hazardous wave
conditions to small craft. Inexperienced mariners, especially
those operating smaller vessels, should avoid navigating in these
conditions.

&&

$$

ANZ251-311130-
/O.EXT.KBOX.GL.W.0008.000000T0000Z-190131T1100Z/
/O.CON.KBOX.UP.W.0002.000000T0000Z-190131T1400Z/
Massachusetts Bay and Ipswich Bay-
1021 PM EST Wed Jan 30 2019

...GALE WARNING NOW IN EFFECT UNTIL 6 AM EST THURSDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 9 AM EST
THURSDAY...

* WINDS AND SEAS...West winds 20 to 30 kt with gusts up to 35 
  kt. Seas 3 to 6 feet.

* FREEZING SPRAY...Heavy Freezing spray expected late tonight 
  into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heavy Freezing Spray Warning means heavy freezing spray is
expected to rapidly accumulate on vessels. These conditions can
be extremely hazardous to navigation. The U.S. Coast Guard
advises mariners to check and ensure all life saving devices
remain free of ice. Mariners not trained to operate in these
conditions, or vessels not properly equipped to do so, should
remain in port or avoid the warning area.

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 seek safe
harbor prior to the onset of gale conditions.

&&

$$

ANZ250-311130-
/O.EXT.KBOX.GL.W.0008.000000T0000Z-190131T1100Z/
/O.CON.KBOX.UP.Y.0004.000000T0000Z-190201T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1021 PM EST Wed Jan 30 2019

...GALE WARNING NOW IN EFFECT UNTIL 6 AM EST THURSDAY...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
FRIDAY...

* WINDS AND SEAS...West winds 25 to 35 kt with gusts up to 40 
  kt. Seas 6 to 9 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

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 seek safe
harbor prior to the onset of gale conditions.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

ANZ233>235-237-311130-
/O.CON.KBOX.GL.W.0008.000000T0000Z-190131T0800Z/
/O.CON.KBOX.UP.Y.0004.000000T0000Z-190201T1200Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
1021 PM EST Wed Jan 30 2019

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM EST THURSDAY...
...FREEZING SPRAY ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
FRIDAY...

* WINDS AND SEAS...West winds 20 to 30 kt with gusts up to 35 
  kt. Seas 5 to 8 feet.

* FREEZING SPRAY...Freezing spray is expected tonight into 
  Thursday night.

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 seek safe
harbor prior to the onset of gale conditions.

A Freezing Spray Advisory means that light to moderate
accumulation of ice is expected on vessels. Operating a vessel in
freezing spray can be hazardous. The U.S. Coast Guard advises
mariners to check and ensure all life saving devices remain free
of ice.

&&

$$

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 Boston/Norton MA
133 AM EST Wed Jan 30 2019

.SYNOPSIS...
Low pressure will bring a period of accumulating snow in the
interior and mainly rain near the coast tonight. The heaviest
snow accumulations will be across the Berkshires. An arctic
front crosses the region late Wednesday into Wednesday evening,
likely bringing scattered snow squalls followed by bitterly
cold temperatures Wednesday night into Friday morning. Milder
temperatures arrive this weekend with dry conditions as high
pressure builds across the northeast. A cold front may approach
early next week.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...

130 am update...

Snow across western MA and a mixture of rain/snow across
northern CT depending on the exact location will becoming to an
end through about 8z. There was actually a very narrow area of
freezing rain too, where warm mid level air has worked into
portions of eastern CT. Precipitation should be winding down
shortly and may end as a brief period of snow.

Snow will continue a bit longer across central and interior
northeast MA...but should be ending around 9z as well. Ptype was
mainly rain across far eastern MA into RI with a also very
narrow area of freezing rain near Bedford MA. Overall
precipitation should come to an end in this area by 10z.

All precipitation should be over in time for the morning
commute. Temperatures will fall back below freezing in all
locations...so some icy spots are possible. However...this will
not be a "Flash Freeze" situation as a west wind should assist
in drying. Nonetheless...motorists should be prepared for some
black ice.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM THURSDAY/...
* Scattered snow squalls with brief heavy snow likely during
  the afternoon

Polar vortex north of the Lakes with decent shortwave rotating
into New England late day/evening. Sunshine to start the day,
but clouds will quickly develop in the afternoon as deep
moisture moves into the region ahead of the shortwave. The
attending arctic front will swing through SNE mid/late
afternoon into early evening. There is a strong signal for snow
squalls along the front with sufficient moisture in the 0-2km
layer, very steep 0-3km lapse rates 8-9 c/km and good low level
convergence. The one negative factor is low dewpoints and high
T/Td depression which may limit areal coverage somewhat. We will
have to monitor this closely but all hi-res guidance supports
snow squall potential. Brief heavy snow with whiteout conditions
and wind gusts over 40 mph may accompany any squalls with a
quick inch possible. Timing of squalls will be around mid
afternoon in western New Eng reaching SE New Eng toward evening
which may impact the evening commute.

The other concern is potential for strong W/SW winds in the
afternoon. Soundings show very deep mixed layer to above 700 mb.
Not expecting to mix down 700 mb winds but potential for gusts
over 40 mph and later shifts may need to consider a wind
advisory. High wind watch continues for Cape/Islands for late
afternoon and evening. Highs will range from the lower 20s to
lower 30s but falling rapidly by late afternoon.

&&

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

 - Mid to late week bone chilling cold, WIND CHILL headlines likely
 - Seasonable pattern following week with fast moving storms
 - Uncertain accompanying storm outcomes given thermal profiles

*/ Overview ...

A pattern adjustment. Broadly speaking, whether equatorial Central
Pacific tropical activity signaled by a phase 5/6 MJO echoing into
the NE Pacific / Gulf of Alaska via higher H5 heights with SW-flow,
or seemingly a less wavy global pattern coinciding per a tightening
of the stratospheric polar vortex (10 mb), dangerously cold Arctic
air is contained N as a more seasonable, in some cases mild, pattern
emerges across the CONUS.

From a N-central Pacific split-flow regime, anticipating anomalous
westerly sub-tropical flow into the CONUS as W CONUS H5 troughing
prevails downstream of aforementioned higher heights into the NE
Pacific. Looking at a series of Pacific waves digging across the W
CONUS, only to zip and deamplify SW-NE across the E CONUS under the
weight of warmer S-stream southwesterlies and subsequent higher H5
heights, latent heat release contributing.

But a wavering SW-NE baroclinic zone along which weak, open-wave H5
disturbances sweep, across and around New England, downstream of a
split-flow regime, inherent challenges in forecasting. Deterministic
models have wobbled considerably in next week forecasts. Undoubtedly
varied SW surges of Pacific sub-tropical air, continued uncertainty
of equatorial Central Pacific tropics per MJO forecasts. Which side
of the thermal envelope will the NE CONUS reside with any sweeping
storms, whether S- or N-stream dominant? It's likely we may not see
the finer details until 36-48 hours out given forecast tight NW-SE
thermal gradients oriented SW-NE. Expect challenging precip-type
forecasts per surface to low-level isallobaric / gradient flow.

Confidence low Sunday and beyond. Break down details and forecast
thinking below.

*/ Discussion ...

Wednesday night through Saturday night ...

Dangerously cold, especially Wednesday night through Thursday morn.
Arctic air punch with a leading frontal boundary pushing offshore
Wednesday evening with remnant snow squall activity sweeping out to
sea in an environment of localized deep-layer moisture beneath steep
lapse rates up around H7. Behind which, blustery W winds with gusts
around 25 to 35 mph initially, gradually tapering through Thursday
into Friday with increasing influence of high pressure, suppressing
the depth of the boundary layer and mix-down potential. Anticipate
some skin-cracking, dry dewpoints.

WIND CHILL HEADLINES posted given 15 to 25 below zero values that
are presently forecast, especially over the Berkshires. Beneath H85
temperatures as cold as -25C into Thursday, moderating going into
Friday. Possibly record lows broken Thursday morning, but higher
confidence lowest high temperature records will be broken Thursday.
Also could see some record H925-7 temperatures within Chatham MA
sounding climatology.

A 1030+ high Saturday morn, cold exacerbated by radiational cooling,
especially for areas with deeper snowpack. May come close to record
lows, but a better shot of breaking record lowest high temperatures.

Sunday onward ...

Low confidence forecast. Certain will see SW-NE zipping lows along a
NW-SE thermal gradient. Whether S- or N-stream, a wavering, wobbling
gradient, additional variables of remnant snowpack, upstream N high
pressure, strength of surface lows and subsequent isallobaric and
gradient wind along with direction, just some of the factors that'll
influence most likely weak, open-wave disturbances / baroclinic leaf
upslope events. Mixed precip-types anticipated, just depends which
side of the envelope S New England will reside upon.

&&

.AVIATION /06Z 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/...

Through 12z this morning...High confidence. Rain along the I-95
corridor with snow further back across the interior will
becoming to an end by 8z in western MA/northern CT and eastern
MA/RI by 10z. This will allow MVFR-IFR conditions to improve to
mainly VFR in most locations by 12z, but improvement may take a
bit longer across far southeast New England.

Today beyond 12z...High confidence. Mainly VFR conditions into
mid afternoon. However, a strong arctic cold front will bring
snow squalls between 20z and 00z from west to east. While
activity may last 30 minutes or less in most locations, brief
very heavy snow, strong winds and near white-out conditions can
be expected in some locales. There are some indications this
activity may be fairly widespread and impact many terminals. A
quick coating to 1.5 inches of snow may accumulate on runways.
Brief westerly wind gusts of 35 to 40 knots are expected with
these snow squalls, but a few gusts up to 50 knots can not be
ruled out.

KBOS Terminal...Overall high confidence, but uncertain if the
airport takes a direct hit from a snow squall late today. Rain
ends by 10z, with improvement to VFR by 12z which continues into
the afternoon. Snow squall threat appear to occur between 22z
and 00z and has the potential to impact the evening push. If a
direct impact occurs, brief near white-out conditions along
with strong wind gusts can be expected with snow covered
runways.

KBDL Terminal...Overall high confidence, but uncertain if the
airport takes a direct hit from a heavy snow squall late today.
Rain ends by 10z, with improvement to VFR by 12z which
continues into the afternoon. Snow squall threat appear to occur
between 20z and 22z and has the potential to impact the evening
push. If a direct impact occurs, brief near white-out
conditions along with strong wind gusts can be expected with
snow covered runways.

Outlook /Thursday through Sunday/...Moderate confidence

Thursday: VFR. Windy with local gusts up to 30 kt.

Friday through Sunday: VFR. Breezy.

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

Monday: VFR. Chance RA, slight chance SN.

&&

.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

Tonight...Increasing SE winds with gusts 25-30 kt developing.
Winds shifting W over a majority of waters by Wednesday morning.
Prior to the wind shift, expect rain along with reductions in
visibility at times. Wave heights 5 to 8 feet off the near-shore
waters.

Wednesday...W/SW wind gusts increasing to 35-45 kt by afternoon.
Gale warnings issued, except storm watches for outer S waters
with a low risk for 50 kt gusts. Freezing spray developing in
the afternoon. Snow showers / squalls possible toward evening
which could be associated with localized gusts to 50 kts as well.

Outlook /Thursday Night through Sunday/...Moderate confidence.

Thursday Night: Moderate risk for Small Craft Advisory winds
with areas of gusts up to 30 kt. Areas of rough seas. Freezing
spray.

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of seas approaching 5 ft. Freezing spray.

Friday Night: Winds less than 25 kt. Areas of seas approaching
5 ft.

Saturday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Seas locally approaching 5 ft.

Saturday Night: Winds less than 25 kt.

Sunday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Sunday Night: Winds less than 25 kt. Local rough seas. Slight
chance of rain.

Monday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain.

&&

.CLIMATE...
Record LOWEST High Temperatures for Thursday, January 31st...

Boston ....... 12 (1920, 1935)
Hartford ..... 15 (1951)
Providence ... 15 (1935)
Worcester .... 11 (1951)

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Winter Weather Advisory until 5 AM EST early this morning for
     CTZ002.
MA...Winter Weather Advisory until 5 AM EST early this morning for
     MAZ003>005-010>012-026.
     High Wind Watch from this afternoon through this evening for
     MAZ022>024.
     Winter Storm Warning until 5 AM EST early this morning for
     MAZ002-008-009.
RI...None.
MARINE...Gale Warning from 1 PM this afternoon to 1 AM EST Thursday for
     ANZ230>237-250-251.
     Storm Watch from this afternoon through this evening for
     ANZ254>256.

&&

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

Hazardous Weather Outlook
National Weather Service Boston/Norton MA
356 PM EST Tue Jan 29 2019

CTZ002-MAZ003>005-010>012-026-302100-
Hartford CT-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
356 PM EST Tue Jan 29 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM EST WEDNESDAY...

This Hazardous Weather Outlook is for northern, western and central
Massachusetts as well as Hartford County CT.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday afternoon into Wednesday evening...

Scattered snow squalls are expected roughly 3 pm to 7 pm. Expect near
white out conditions in squalls with brief heavy snow along with
blustery westerly winds with potential gusts up to 40 mph. Quick
accumulations up around an inch possible. Impacts to the Wednesday
afternoon into evening commute.

Wednesday night into Thursday...

Dangerously cold wind chills are forecast. Wind chills of 15 to 25
degrees below zero are possible. Exposure to the elements over 30
minutes, there is the risk for frostbite and hypothermia. Wind chill
headlines will likely be needed.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MAZ002-008-009-302100-
Western Franklin MA-Western Hampshire MA-Western Hampden MA-
356 PM EST Tue Jan 29 2019

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM EST WEDNESDAY...

This Hazardous Weather Outlook is for the Berkshires.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday afternoon into Wednesday evening...

Scattered snow squalls are expected roughly 3 pm to 7 pm. Expect near
white out conditions in squalls with brief heavy snow along with
blustery westerly winds with potential gusts up to 40 mph. Quick
accumulations up around an inch possible. Impacts to the Wednesday
afternoon into evening commute.

Wednesday night into Thursday...

Dangerously cold wind chills are forecast. Wind chills of 15 to 25
degrees below zero are possible. Exposure to the elements over 30
minutes, there is the risk for frostbite and hypothermia. Wind chill
headlines will likely be needed.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

CTZ003-004-MAZ006-007-013>021-RIZ001>008-302100-
Tolland CT-Windham CT-Western Essex MA-Eastern Essex 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-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-Block Island RI-
356 PM EST Tue Jan 29 2019

This Hazardous Weather Outlook is for eastern and southeastern
Massachusetts as well as all of Rhode Island.

.DAY ONE...Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday afternoon into Wednesday evening...

Scattered snow squalls are expected roughly 3 pm to 7 pm. Expect near
white out conditions in squalls with brief heavy snow along with
blustery westerly winds with potential gusts up to 40 mph. Quick
accumulations up around an inch possible. Impacts to the Wednesday
afternoon into evening commute.

Wednesday night into Thursday...

Dangerously cold wind chills are forecast. Wind chills of 15 to 25
degrees below zero are possible. Exposure to the elements over 30
minutes, there is the risk for frostbite and hypothermia. Wind chill
headlines will likely be needed.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MAZ022>024-302100-
Barnstable MA-Dukes MA-Nantucket MA-
356 PM EST Tue Jan 29 2019

...HIGH WIND WATCH FROM WEDNESDAY AFTERNOON THROUGH EVENING...

This Hazardous Weather Outlook is for Cape cod and the Islands.

.DAY ONE...Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Watch

Wednesday afternoon into Wednesday evening...

Scattered snow squalls are expected roughly 3 pm to 7 pm. Expect near
white out conditions in squalls with brief heavy snow along with
blustery westerly winds with potential gusts up to 40 mph. Quick
accumulations up around an inch possible. Impacts to the Wednesday
afternoon into evening commute.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ254>256-302100-
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-
356 PM EST Tue Jan 29 2019

...STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH EVENING...

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Storm Watch

Wednesday evening into Thursday...

Moderate to heavy freezing spray is forecast on all waters. Waves
heights as high as 8 to 12 feet in addition to the winds, both
peaking overnight. Expect dangerous conditions for all vessels, even
those properly equipped. Freezing Spray headlines are likely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-302100-
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-
356 PM EST Tue Jan 29 2019

...GALE WARNING FROM 1 PM WEDNESDAY TO 1 AM EST THURSDAY...

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning

Wednesday evening into Thursday...

Moderate to heavy freezing spray is forecast on all waters. Waves
heights as high as 8 to 12 feet in addition to the winds, both
peaking overnight. Expect dangerous conditions for all vessels, even
those properly equipped. Freezing Spray headlines are likely.

.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
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
935 PM EST TUE JAN 29 2019

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

0900 PM     SNOW             WEST SPRINGFIELD        42.11N  72.62W
01/29/2019  M1.0 INCH        HAMPDEN            MA   HAM RADIO

0902 PM     SNOW             SPRINGFIELD             42.12N  72.54W
01/29/2019  M1.0 INCH        HAMPDEN            MA   BROADCAST MEDIA

0910 PM     SNOW             WINDSOR                 41.85N  72.65W
01/29/2019  M2.0 INCH        HARTFORD           CT   PUBLIC

0919 PM     SNOW             TOLLAND                 41.87N  72.37W
01/29/2019  M2.2 INCH        TOLLAND            CT   TRAINED SPOTTER

&&

EVENT NUMBER BOX1900397
EVENT NUMBER BOX1900398
EVENT NUMBER BOX1900399
EVENT NUMBER BOX1900400

KAB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
953 PM EST TUE JAN 29 2019

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

0933 PM     SNOW             WEST HARTFORD           41.77N  72.75W
01/29/2019  M3.3 INCH        HARTFORD           CT   BROADCAST MEDIA

0935 PM     SNOW             SIMSBURY                41.88N  72.81W
01/29/2019  M3.0 INCH        HARTFORD           CT   BROADCAST MEDIA

0937 PM     SNOW             UNIONVILLE              41.76N  72.89W
01/29/2019  M4.2 INCH        HARTFORD           CT   GENERAL PUBLIC

0945 PM     SNOW             CHICOPEE                42.15N  72.61W
01/29/2019  M2.0 INCH        HAMPDEN            MA   HAM RADIO

0946 PM     SNOW             STAFFORDVILLE           41.99N  72.26W
01/29/2019  M1.2 INCH        TOLLAND            CT   CO-OP OBSERVER

0947 PM     SNOW             EAST FARMINGTON HEIGHTS 41.73N  72.78W
01/29/2019  M3.0 INCH        HARTFORD           CT   TRAINED SPOTTER

&&

EVENT NUMBER BOX1900401
EVENT NUMBER BOX1900402
EVENT NUMBER BOX1900403
EVENT NUMBER BOX1900404
EVENT NUMBER BOX1900405
EVENT NUMBER BOX1900406

KAB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1021 PM EST TUE JAN 29 2019

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

0926 PM     SNOW             BURLINGTON              41.77N  72.97W
01/29/2019  M3.5 INCH        HARTFORD           CT   TRAINED SPOTTER

1000 PM     SNOW             WORTHINGTON             42.39N  72.92W
01/29/2019  M3.5 INCH        HAMPSHIRE          MA   CO-OP OBSERVER

1006 PM     SNOW             MANCHESTER              41.78N  72.52W
01/29/2019  M1.5 INCH        HARTFORD           CT   TRAINED SPOTTER

1011 PM     SNOW             TOLLAND                 41.87N  72.37W
01/29/2019  M2.5 INCH        TOLLAND            CT   PUBLIC

1012 PM     SNOW             NORTH CHELMSFORD        42.64N  71.38W
01/29/2019  M1.0 INCH        MIDDLESEX          MA   HAM RADIO

&&

EVENT NUMBER BOX1900407
EVENT NUMBER BOX1900408
EVENT NUMBER BOX1900409
EVENT NUMBER BOX1900410
EVENT NUMBER BOX1900411

KAB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1038 PM EST TUE JAN 29 2019

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

1025 PM     SNOW             PLAINFIELD              42.52N  72.92W
01/29/2019  M3.7 INCH        HAMPSHIRE          MA   HAM RADIO

1026 PM     SNOW             CANTON                  41.82N  72.89W
01/29/2019  M4.5 INCH        HARTFORD           CT   TRAINED SPOTTER

1029 PM     SNOW             HOLYOKE                 42.21N  72.64W
01/29/2019  M2.0 INCH        HAMPDEN            MA   BROADCAST MEDIA

1031 PM     SNOW             DRACUT                  42.67N  71.30W
01/29/2019  M1.5 INCH        MIDDLESEX          MA   HAM RADIO

1034 PM     SNOW             SPRINGFIELD             42.10N  72.59W
01/29/2019  M2.5 INCH        HAMPDEN            MA   TRAINED SPOTTER

&&

EVENT NUMBER BOX1900412
EVENT NUMBER BOX1900413
EVENT NUMBER BOX1900414
EVENT NUMBER BOX1900415
EVENT NUMBER BOX1900416

KAB