Alert archive / Massachusetts / Small Craft Advisories in 2017

Small Craft Advisory 144, NWS Boston/Norton, MA

December 15, 2017

NWS Boston/Norton, MA issued this small craft advisory at Dec 15, 2017, 3:22 PM EST. It took effect at Dec 16, 2017, 4:00 AM EST. It was in force for 27 hr.

The area

The counties it named.

The facts

Issued
Dec 15, 2017, 3:22 PM EST (20:22 UTC)
In effect from
Dec 16, 2017, 4:00 AM EST
Expired
Dec 17, 2017, 7:00 AM EST
In force
27 hr
Issued by
NWS Boston/Norton, MA

The text

As transmitted.

851 
WHUS71 KBOX 152022
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
322 PM EST Fri Dec 15 2017

ANZ254>256-160430-
/O.NEW.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
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-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM SATURDAY TO 1 AM EST
SUNDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 4 AM Saturday to 1 AM EST
Sunday.

* WINDS AND SEAS...Northwest winds 10 to 20 kt with a few gusts 
  up to 35 kt. Seas 7 to 10 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.

&&

$$

ANZ250-160430-
/O.NEW.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM SATURDAY TO 1 AM EST
SUNDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 4 AM Saturday to 1 AM EST
Sunday.

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-160430-
/O.NEW.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
Rhode Island Sound-Block Island Sound-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM SATURDAY TO 1 AM EST
SUNDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 4 AM Saturday to 1 AM EST
Sunday.

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ251-160430-
/O.NEW.KBOX.SC.Y.0144.171216T1200Z-171217T0000Z/
Massachusetts Bay and Ipswich Bay-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM TO 7 PM EST
SATURDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 7 AM to 7 PM EST Saturday.

* WINDS AND SEAS...West winds 10 to 15 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.

&&

$$

ANZ231>234-160430-
/O.NEW.KBOX.SC.Y.0144.171216T0900Z-171217T0300Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 10 PM EST
SATURDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 4 AM to 10 PM EST Saturday.

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ236-160430-
/O.NEW.KBOX.SC.Y.0144.171216T1400Z-171217T0300Z/
Narragansett Bay-
322 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM TO 10 PM EST
SATURDAY...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 9 AM to 10 PM EST Saturday.

* WINDS AND SEAS...West winds 10 to 15 kt with gusts up to 25 
  kt. Waves 1 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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
8 follow-up statements
345 
WHUS71 KBOX 160251
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
951 PM EST Fri Dec 15 2017

ANZ254>256-161100-
/O.CON.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
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-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM SATURDAY TO
1 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  35 kt. Seas 7 to 10 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.

&&

$$

ANZ250-161100-
/O.CON.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM SATURDAY TO
1 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-161100-
/O.CON.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
Rhode Island Sound-Block Island Sound-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM SATURDAY TO
1 AM EST SUNDAY...

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ251-161100-
/O.CON.KBOX.SC.Y.0144.171216T1200Z-171217T0000Z/
Massachusetts Bay and Ipswich Bay-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM TO 7 PM EST
SATURDAY...

* 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.

&&

$$

ANZ231>234-161100-
/O.CON.KBOX.SC.Y.0144.171216T0900Z-171217T0300Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 PM EST
SATURDAY...

* WINDS AND SEAS...West winds 10 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ236-161100-
/O.CON.KBOX.SC.Y.0144.171216T1400Z-171217T0300Z/
Narragansett Bay-
951 PM EST Fri Dec 15 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM TO 10 PM EST
SATURDAY...

* WINDS AND SEAS...West winds 10 to 15 kt with gusts up to 25 
  kt. Waves 1 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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
738 
WHUS71 KBOX 160854
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
354 AM EST Sat Dec 16 2017

ANZ230-161700-
/O.EXB.KBOX.SC.Y.0144.171216T1400Z-171217T0000Z/
Boston Harbor-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 7 PM
EST THIS EVENING...

The National Weather Service in Taunton has issued a Small Craft
Advisory, which is in effect from 9 AM this morning to 7 PM EST
this evening.

* WINDS AND SEAS...West winds 15 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.

&&

$$

ANZ254>256-161700-
/O.EXT.KBOX.SC.Y.0144.171216T0900Z-171217T1100Z/
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-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 kt. Seas 6 to 9 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-161700-
/O.EXT.KBOX.SC.Y.0144.171216T0900Z-171217T0800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-161700-
/O.EXT.KBOX.SC.Y.0144.171216T0900Z-171217T0800Z/
Rhode Island Sound-Block Island Sound-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 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.

&&

$$

ANZ251-161700-
/O.EXT.KBOX.SC.Y.0144.171216T1100Z-171217T0600Z/
Massachusetts Bay and Ipswich Bay-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 1 AM EST SUNDAY...

* 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.

&&

$$

ANZ231>234-161700-
/O.EXT.KBOX.SC.Y.0144.171216T0900Z-171217T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 1 AM EST SUNDAY...

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ236-161700-
/O.EXT.KBOX.SC.Y.0144.171216T1400Z-171217T0000Z/
Narragansett Bay-
354 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING TO
7 PM EST THIS EVENING...

* WINDS AND SEAS...West winds 10 to 15 kt with gusts up to 25 
  kt. Waves 1 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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
209 
WHUS71 KBOX 161457
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
957 AM EST Sat Dec 16 2017

ANZ254>256-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T1100Z/
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-
957 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 kt. Seas 6 to 9 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
957 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Rhode Island Sound-Block Island Sound-
957 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 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.

&&

$$

ANZ251-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Massachusetts Bay and Ipswich Bay-
957 AM EST Sat Dec 16 2017

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

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ230-236-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0000Z/
Boston Harbor-Narragansett Bay-
957 AM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WINDS AND SEAS...West winds 10 to 15 kt with gusts up to 30 
  kt. Waves 1 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231>234-162300-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
957 AM EST Sat Dec 16 2017

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

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 30 
  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
902 
WHUS71 KBOX 161934
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
234 PM EST Sat Dec 16 2017

ANZ254>256-170345-
/O.EXT.KBOX.SC.Y.0144.000000T0000Z-171217T1300Z/
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-
234 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 kt. Seas 6 to 9 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-170345-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
234 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 25 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-170345-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Rhode Island Sound-Block Island Sound-
234 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ251-170345-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Massachusetts Bay and Ipswich Bay-
234 PM EST Sat Dec 16 2017

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

* WINDS AND SEAS...West winds 15 to 20 kt with gusts up to 30 
  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.

&&

$$

ANZ230-236-170000-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0000Z/
Boston Harbor-Narragansett Bay-
234 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WINDS AND SEAS...West winds 10 to 15 kt with gusts up to 25 
  kt. Waves 1 to 3 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231>234-170345-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
234 PM EST Sat Dec 16 2017

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

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  30 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
733 
WHUS71 KBOX 162329
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
629 PM EST Sat Dec 16 2017

ANZ230-236-170030-
/O.CAN.KBOX.SC.Y.0144.000000T0000Z-171217T0000Z/
Boston Harbor-Narragansett Bay-
629 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY IS CANCELLED...

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

Winds have diminished below small craft advisory thresholds.
Therefore, the small craft advisory has been cancelled.

$$

ANZ254>256-170730-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T1300Z/
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-
629 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  30 kt. Seas 6 to 9 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-170730-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
629 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-170730-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Rhode Island Sound-Block Island Sound-
629 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ251-170600-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Massachusetts Bay and Ipswich Bay-
629 PM EST Sat Dec 16 2017

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

* WINDS AND SEAS...Northwest winds 10 to 15 kt with gusts up to 
  30 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.

&&

$$

ANZ231>234-170600-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
629 PM EST Sat Dec 16 2017

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

* WINDS AND SEAS...Northwest winds 10 to 15 kt with gusts up to 
  30 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
464 
WHUS71 KBOX 170235
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
935 PM EST Sat Dec 16 2017

ANZ254>256-171045-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T1300Z/
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-
935 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 10 to 20 kt with gusts up to 
  30 kt. Seas 5 to 8 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-170800-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
935 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ235-237-170800-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0800Z/
Rhode Island Sound-Block Island Sound-
935 PM EST Sat Dec 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EST SUNDAY...

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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.

&&

$$

ANZ251-170600-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Massachusetts Bay and Ipswich Bay-
935 PM EST Sat Dec 16 2017

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

* 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.

&&

$$

ANZ231>234-170600-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-171217T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
935 PM EST Sat Dec 16 2017

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

* WINDS AND SEAS...Northwest winds 15 to 20 kt with gusts up to 
  30 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
258 
WHUS71 KBOX 170837
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
337 AM EST Sun Dec 17 2017

ANZ254>256-171200-
/O.EXT.KBOX.SC.Y.0144.000000T0000Z-171217T1200Z/
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-
337 AM EST Sun Dec 17 2017

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

* WINDS AND SEAS...Northwest winds 10 to 15 kt with gusts up to 
  20 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
434 
WHUS71 KBOX 171156
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Taunton MA
656 AM EST Sun Dec 17 2017

ANZ254>256-171300-
/O.EXP.KBOX.SC.Y.0144.000000T0000Z-171217T1200Z/
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-
656 AM EST Sun Dec 17 2017

...SMALL CRAFT ADVISORY WILL EXPIRE AT 7 AM EST THIS MORNING...

Winds and seas have diminished below small craft levels.

$$

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

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this small craft advisory went out at Dec 15, 3:22 PM EST, 0 minutes earlier.

Area forecast discussion, Dec 15, 3:22 PM EST, 0 minutes before
Area Forecast Discussion
National Weather Service Taunton MA
322 PM EST Fri Dec 15 2017

.SYNOPSIS...
Low pressure will deepen to our southeast late tonight, with
some light to moderate snowfall this evening out ahead. Expect
dry but cold conditions Saturday night into Sunday. Flurries
changing over potentially to freezing drizzle before going to
plain rain Sunday night into Monday, potentially lingering into
Tuesday. Cold and blustery Wednesday, warm rebound Thursday.
Quick moving system Friday into Saturday. An eye on the holiday
break for a possible storm system.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Gradually lowering CIGs suggest a slow moistening of the lower
lvls. However dwpt depressions at the sfc still running 10-15F
at the time of this running. Still, column in the process of
moistening to its peak PWATs of 0.5 inches by late this evening.
Phasing N and S stream shortwaves still rotating into PA, but
the precip shield associated with sfc cyclogenesis beneath a the
poleward exit region of of a 170kt jet continues to blossom
across PA/NJ and is just reaching S NY state with light SN
already reported at NYC to central LI.

The big issue through the evening, particularly 22Z (5PM)
through 05Z (midnight) will be how far N this precip shield is
able to shift as the low pres and inverted low-mid lvl trof
develops through the late evening hours. Although the overnight
runs were less progressive and more amplified than previous
runs, 15.12Z guidance has split somewhat with the GFS now less
amplified than the previous run, the NAM more amplified and the
ECMWF/HREF in the middle. Will lean most closely on the latter
two. The low lvl dry air will define the initial timing and how
far N the precip shield ultimately reaches, but feel that
guidance is likely too far suppressed with T-0.01 QPF, as this
is similar to the event that occurred yesterday where light SN
inched all the way up to along and N of the Mass Pike. Will
highlight categorical and likely POPs to this point, dropping to
chance and below further N. Peak QPF is along and just S of the
S coastal region, in an area where there is modest low-mid lvl
banding signature and peak (12-15 microbar/sec) within the -12 C
to -18C dendrite growth regime and modest negative EPV. This
could be enhanced by a little bit of southerly ocean
enhancement, thanks to H85 temps cool to -10C while SSTs hover
just below +10C. SLRs will likely be on the higher end within
the anomalously cold airmass, looking at about 20:1. Therefore
with QPF values in the 0.10-0.30 mark, could see an area of 2-4
inches along the Cape/Islands, with lower amounts across the
mainland with a few hours of decent snowfall rates. Band of 1-3
will be featured across S and central CT, most of RI and
interior SE MA, with a localized pocket near 4 inch along the
immediate S coast. Areas N of this band will likely struggle to
reach an inch if even a T is observed.

Hoisting a Winter Wx Advisory for immediate S coastal locations
and the Cape/Islands given the risk for some 3+ amounts. Will
continue SPS elsewhere. The key with this will be timing, as SN
will start during the later portion of the commute, and given
cold road sfc temps, should begin to stick quickly where
untreated.

Given this is a very progressive system that deepens offshore.
SN will quickly end after midnight, giving way to clearing skies
through the AM hours such that most areas see the sunrise. Min
temps will likely hold in the mid 20s, near the sfc wetbulb
temps.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/...
Upper lvl shortwave shifts into the Maritimes allowing for
modest mid and upper lvl ridging to take its place through the
early half of the weekend. Soundings gradually dry and give way
to subsidence inversion, which may initially allow for the
development of some CU under W flow during Sat afternoon. These
dissipate diurnally. Otherwise, H92 temps hover near -8C through
the Sat and Sat night timeframe, which, will allow highs to
reach the mid-upper 30s by day. Some breezy conditions possible
during the afternoon as better mixing could tap a nearly 30 kt
LLJ. Sat night, good setup for radiational cooling with light
snowpack and cresting 1025 hPa high pres. Will see several spots
drop back into the single digits and low teens.

&&

.LONG TERM /SUNDAY THROUGH FRIDAY/...
*/ Highlights...

 - Light wintry mix Sunday night into Monday, possibly into Tuesday
 - Ebb and flow for Wednesday into Thursday
 - Quick moving system Friday into Saturday
 - An eye on the holiday break, possible storm system

*/ Overview...

Transitional pattern emerging with the increasing potential of mixed
precipitation events. Whether the NW Pacific H5 ridge prevailing, or
broken down by a series of mild, Pacific disturbances, accompanying
jet streaks, the pump of milder air from the N Pacific to the Arctic
persists all the way up through the stratosphere. Broad-scale higher
heights building across the CONUS with time, cross polar flow and
dominant region of low pressure / storm development push subtly E,
aimed into E/NE N America however remaining stretched back W. The N
Atlantic high building SW with higher heights, starting to see a La
Nina type pattern emerge with dry and warm conditions building over
the SE CONUS as cooler conditions are rocked back W, wrapping on the
backside, sheared S by the polar jet through the preferred H5 trof
pattern across N-Central America, however not as deep, more flat.

Amplified, then break down, amplified, then break down, NW Pacific
H5 ridge acts like a pump, broken down by a series of mid to upper
level disturbances only to rebound due to the buckling traffic jam
of weather, energy becoming sheared S, cutoff, a constant over the
SW CONUS. Colder air sheared S in concert, cooler and wet pattern
emerges over N-Central CONUS, but up against the prior mentioned SW
building N Atlantic high, a SW to NE transitional zone emerges over
the Central and E CONUS, with a sharp temperature gradient in the
low to mid levels. It then becomes a focus on the depth / magnitude
of individual waves, as to which side of the envelope S New England
will reside with respect to mixed precipitation events as we go into
the holiday week. N flow dominance of colder air is relaxing in the
long term but not absent. Allowance of S warmer flow, over-running,
threats / impacts associated with wintry mixes are forecast.

Closely monitoring the Sunday night through Tuesday timeframe with a
slow moving warm front N parent with weak ascent. Warm nose around
H95 within moist low levels, a drizzly to light wintry mix of snow,
sleet, freezing rain is possible. Could see similar impacts along a
forecast warm front Thursday night into Friday. Threats and impacts
discussed in detail, along with forecast thinking, below.

*/ Discussion...

Sunday through Tuesday...

Potential light wintry mix along a slow moving warm front lifting N.
Broadly speaking over the forecast period, H95 warm-nose protrusion
above which there's indications of weak isentropic ascent along the
280-300K theta surfaces, possibly some weak convergent forcing along
the nose of a H85-7 jet, all contributing to periods of weak roughly
W-E frontogenetical banding around H7. Greatest forcing more than
likely along the S/W facing slopes of high terrain with orographic
tendencies. N/NE ageostrophic flow N/NE at first turning E maintains
interior sub-freezing wet bulb temperatures especially over the high
terrain. All throughout, BUFKIT soundings showing plenty of moisture
within low-levels to act upon.

ECens exhibits high probability of 0.01" in 24 hours from 0z Monday
to 0z Wednesday prior to a sweeping cold front. Similar signals in
GEFS/SREF plumes. More than likely the S/W slopes of high terrain
under greater risk seeing a wintry mix of precipitation outcomes.

Favoring the NAM trends with 2m wet bulb temperatures, retreating N
to NE, leaning towards high-chance PoPs with light, drizzly outcomes
with the wintry mix of initially flurries changing to freezing light
rain / drizzle prior to rain Sunday night into roughly late Monday,
the high terrain and NE MA seeing the changeover to plain late the
latest. Snow to freezing rain subsequent of drying indications with
drying occurring within the dendritic growth zone.

Even with a trace of ice, WINTER WEATHER ADVISORIES required. Will
note the possibility in the HAZARDOUS WEATHER OUTLOOK. Monitoring
the strength and depth of the rather flat feature approaching late.
If it can become more pronounced and exhibit a stronger S flow early
on out ahead, could see more significant impacts, especially if it
speeds up. Otherwise cold front sweeping through Tuesday night with
some showery weather, cold air blasts right back in for midweek.

Wednesday into Thursday...

Ebb and flow. Cold blast Wednesday into Thursday morning with breezy
NW winds. Rebound during Thursday with S flow. Dry throughout.

Friday onward...

Quick sweeping system. Warm front lifting on Friday with potential
onset of wintry mix precipitation types. A mild rebound overnight
prior to the cold front sweeping through Saturday. A dry forecast
but the cold front stalling along the aforementioned SW building
Atlantic high in the OVERVIEW section. Energy out of the SW CONUS
acting upon, the potential for an ice storm over the SE CONUS and
potentially on up the E coast exists as the cold front is slow to
push out while taking on anafrontal characteristics. There's still a
lot of uncertainty, but can't ignore the general synoptic pattern.

&&

.AVIATION /20Z FRIDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Saturday Night/...

Through 21Z...High confidence.
VFR. Although CIGS will gradually lower to low end VFR by 12Z.
Winds light out of the S-SW.

21Z this evening into 6Z tonight...Moderate confidence.
Area of light to moderate SN moves over S New England, starting
from the SW and lifting up to just N of the Mass Pike by 00Z.
This SN then gradually shifts E 00Z through 05Z. Best chance for
accumulation 2-4 inches will be Cape/Islands, with 1-3 possible
across central CT, most of RI and interior SE MA. N of this line
only a coating to an inch at best is possible. Best chance for
MVFR/IFR conditions will be across central CT most of RI and SE
MA. Winds shift to the W after snowfall ends.

After 06Z tonight into tomorrow...High confidence.
Trending toward VFR and clearing by early morning. Some lower
VFR clouds tomorrow afternoon. Winds W, with gusts between 20-25
kt at times.

Tomorrow night...High confidence.
Mainly VFR, W winds recede.

KBOS Terminal...High confidence. Although light SN may fall
between 22Z and 04Z this evening, mainly VFR conditions are
expected with only minimal accumulation on runway, less than an
inch.

KBDL Terminal...Light SN this evening with temporary MVFR vsbys
possible. Some light accumulations around an inch on the
runways.

Outlook /Sunday through Wednesday/...

Sunday: VFR.

Sunday Night: Mainly VFR, with local MVFR possible. Chance SN,
slight chance FZDZ.

Monday: Mainly VFR, with areas MVFR possible. Chance SN, slight
chance DZ, slight chance FZDZ.

Monday Night: Mainly VFR, with local MVFR possible. Slight
chance FZDZ.

Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance
DZ, slight chance FZDZ.

Tuesday Night: VFR. Windy with local gusts to 30 kt. Chance RA,
slight chance SN.

Wednesday: VFR. Windy with gusts to 30 kt.

&&

.MARINE...
Forecaster Confidence Levels...

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

Short Term /through Saturday Night/...High confidence.

Tonight into tomorrow...High confidence.
Low pressure will develop and pass just southeast of the waters
late tonight into tomorrow. Once winds shift to the W late
tonight, gusts to around 30 kt with a few gusts to 35 kt will
develop and continue into the day Sat. This will allow seas to
peak around 7-9 ft on the SE ocean waters. Small craft
advisories will be issued.

Tomorrow night...
Winds and seas diminish, this will allow any lingering small
craft advisories to be dropped through the overnight hours.

Outlook /Sunday through Wednesday/...

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

Sunday Night through Monday: Winds less than 25 kt. Chance of
drizzle, chance of snow, slight chance of freezing drizzle.

Monday Night: Winds less than 25 kt. Slight chance of drizzle,
slight chance of freezing drizzle.

Tuesday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Chance of drizzle, slight chance of freezing drizzle.

Tuesday Night: Low risk for gale force winds with gusts up to
35 kt. Local rough seas. Chance of rain.

Wednesday: Strong winds with gusts up to 35 kt. Areas of rough
seas. Slight chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...Winter Weather Advisory until midnight EST tonight for
     MAZ020>024.
RI...Winter Weather Advisory until midnight EST tonight for
     RIZ006>008.
MARINE...Small Craft Advisory from 4 AM to 10 PM EST Saturday for
     ANZ231>234.
     Small Craft Advisory from 9 AM to 10 PM EST Saturday for
     ANZ236.
     Small Craft Advisory from 4 AM Saturday to 1 AM EST Sunday for
     ANZ235-237-250-254>256.
     Small Craft Advisory from 7 AM to 7 PM EST Saturday for ANZ251.

&&

SYNOPSIS...Doody/Sipprell
NEAR TERM...Doody
SHORT TERM...Doody
LONG TERM...Sipprell
AVIATION...Doody/Sipprell
MARINE...Doody/Sipprell
Hazardous weather outlook, Dec 15, 4:35 AM EST, 10 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Taunton MA
435 AM EST Fri Dec 15 2017

CTZ002-003-MAZ002>012-014-026-160945-
Hartford CT-Tolland 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-
Southeast Middlesex MA-Northern Middlesex MA-
435 AM EST Fri Dec 15 2017

This Hazardous Weather Outlook is for north central Connecticut,
central Massachusetts, northeastern Massachusetts and western
Massachusetts.

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

CTZ004-MAZ013-015>024-RIZ001>008-160945-
Windham CT-Western Norfolk 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-Northwest Providence RI-Southeast Providence RI-
Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
Block Island RI-
435 AM EST Fri Dec 15 2017

This Hazardous Weather Outlook is for northeast Connecticut, eastern
Massachusetts, southeastern Massachusetts, and Rhode Island.

.DAY ONE...Today and Tonight.

Light snow will develop across central and southern areas this
afternoon and continue through around midnight tonight. There is a
moderate chance for light snow accumulations, especially across south
coastal areas as well as Cape Cod and the islands.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-160945-
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-
435 AM EST Fri Dec 15 2017

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

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

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

In the hours before

Special weather statement, Dec 15, 11:03 AM EST, 4 hours 19 minutes before
Special Weather Statement
National Weather Service Taunton MA
1103 AM EST Fri Dec 15 2017

CTZ004-MAZ013-015>024-RIZ001>008-152100-
Windham CT-Western Norfolk 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-Northwest Providence RI-Southeast Providence RI-
Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI-
Newport RI-Block Island RI-
Including the cities of Putnam, Willimantic, Foxborough, Norwood,
Boston, Quincy, Taunton, Brockton, Plymouth, Fall River,
New Bedford, Mattapoisett, Chatham, Falmouth, Provincetown,
Vineyard Haven, Nantucket, Foster, Smithfield, Providence,
Coventry, West Greenwich, East Greenwich, Warwick, West Warwick,
Bristol, Narragansett, Westerly, Newport, and New Shoreham
1103 AM EST Fri Dec 15 2017

...Accumulating snow for the end of the evening commute...

Light snowfall will begin to overspread the region after 5 pm this
evening, increasing to a moderate snowfall especially along the
immediate south coast, Cape Cod and the Islands between 7 and 10
pm. Untreated roadways may become slippery.

At this time, areas of 1 to 3 inches of snow are expected along
the south coast, with a low risk for up to 4 inches. Areas up to
and just north of the Mass Pike may receive a coating to an inch.

Motorists are urged to use caution during this evening's commute.
Special weather statement, Dec 15, 2:11 PM EST, 1 hour 11 minutes before
Special Weather Statement
National Weather Service Taunton MA
211 PM EST Fri Dec 15 2017

CTZ002>004-MAZ017>024-RIZ001>008-152115-
Hartford CT-Tolland CT-Windham CT-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
Block Island RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon,
Putnam, Willimantic, Taunton, Brockton, Plymouth, Fall River,
New Bedford, Mattapoisett, Chatham, Falmouth, Provincetown,
Vineyard Haven, Nantucket, Foster, Smithfield, Providence,
Coventry, West Greenwich, East Greenwich, Warwick, West Warwick,
Bristol, Narragansett, Westerly, Newport, and New Shoreham
211 PM EST Fri Dec 15 2017

...Accumulating Snow Begins During The Evening Commute In
Connecticut...Rhode Island and Southeast Massachusetts...

At 2 PM light snow was developing across Long Island, southwest
Connecticut and the New York City area. This area of snow will
continue to expand in areal coverage and advance northeast across
the remainder of Connecticut, Rhode Island and southeast
Massachusetts between 4 pm and 7 pm. Snow will become moderate for
a time from about 8 pm to 11 pm west to east from Hartford to
Providence to Plymouth, with snow accumulations of an inch or two
before tapering off from 11 pm to 1 am, again from west to east.

Snow accumulations will be heavier along the south coast of RI and
MA where 2-4 inches are expected.  Given the cold temperatures
untreated roads will quickly become snow covered and slippery.
Allow extra time to reach your destination and exercise caution.

Nocera

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 15, 1:21 PM ESTWinter Weather AdvisoryBOXBarnstable, Bristol, Dukes, Nantucket, Plymouth11 hr

Nearby

Small Craft Advisories in Massachusetts, 2017Every small craft advisory in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.