Gale Warning 52, NWS Boston/Norton, MA

484 
WHUS71 KBOX 160246
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
946 PM EST Tue Dec 15 2020

ANZ250-251-254>256-161100-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
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-
946 PM EST Tue Dec 15 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO 1 AM EST
FRIDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 50 kt and 
  seas 11 to 16 feet expected.

* WHERE...In Massachusetts coastal waters, 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 
  and Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 4 PM Wednesday to 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-161100-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
946 PM EST Tue Dec 15 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO 1 AM EST
FRIDAY...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 45 kt and 
  seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...From 4 PM Wednesday to 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-161100-
/O.CON.KBOX.GL.W.0052.201217T0500Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
946 PM EST Tue Dec 15 2020

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY NIGHT
TO 3 PM EST THURSDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 40 kt and 
  waves around 2 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight Wednesday night to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

228 
WHUS71 KBOX 160841
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
341 AM EST Wed Dec 16 2020

ANZ250-251-254>256-161645-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
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-
341 AM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 AM EST FRIDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 11 to 16 feet expected.

* WHERE...In Massachusetts coastal waters, 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 
  and Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 4 PM this afternoon to 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-161645-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
341 AM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 AM EST FRIDAY...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 45 kt and 
  seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...From 4 PM this afternoon to 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-161645-
/O.CON.KBOX.GL.W.0052.201217T0500Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
341 AM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
EST THURSDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 40 kt and 
  waves around 2 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight tonight to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

702 
WHUS71 KBOX 161432
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
932 AM EST Wed Dec 16 2020

ANZ254>256-162245-
/O.UPG.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
/O.NEW.KBOX.SR.W.0008.201217T0300Z-201217T1700Z/
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-
932 AM EST Wed Dec 16 2020

...STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON EST
THURSDAY...

* WHAT...Northeast winds 30 to 40 kt with gusts up to 50 kt and 
  seas 10 to 15 feet expected.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 10 PM this evening to noon EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-162245-
/O.UPG.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
/O.NEW.KBOX.SR.W.0008.201217T0300Z-201217T1500Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
932 AM EST Wed Dec 16 2020

...STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM EST
THURSDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...From 10 PM this evening to 10 AM EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-251-162245-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
932 AM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 AM EST FRIDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 11 to 16 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...From 4 PM this afternoon to 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-162245-
/O.CON.KBOX.GL.W.0052.201217T0500Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
932 AM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
EST THURSDAY...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 40 kt and 
  waves 2 to 3 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight tonight to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

673 
WHUS71 KBOX 161950
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
250 PM EST Wed Dec 16 2020

ANZ250-251-171000-
/O.CON.KBOX.GL.W.0052.201216T2100Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
250 PM EST Wed Dec 16 2020

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

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 12 to 17 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-171000-
/O.CON.KBOX.GL.W.0052.201217T0500Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
250 PM EST Wed Dec 16 2020

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
EST THURSDAY...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 40 kt and
  waves 2 to 3 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight tonight to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254>256-171000-
/O.CON.KBOX.SR.W.0008.201217T0300Z-201217T1700Z/
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-
250 PM EST Wed Dec 16 2020

...STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
NOON EST THURSDAY...

* WHAT...Northeast winds 30 to 40 kt with gusts up to 50 kt and 
  seas 12 to 17 feet expected.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 10 PM this evening to noon EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-171000-
/O.CON.KBOX.SR.W.0008.201217T0300Z-201217T1500Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
250 PM EST Wed Dec 16 2020

...STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM EST THURSDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...From 10 PM this evening to 10 AM EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

110 
WHUS71 KBOX 170926
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
426 AM EST Thu Dec 17 2020

ANZ250-251-171700-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
426 AM EST Thu Dec 17 2020

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

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 12 to 17 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-171700-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
426 AM EST Thu Dec 17 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 40 kt and 
  waves 2 to 3 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight tonight to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254>256-171700-
/O.CON.KBOX.SR.W.0008.000000T0000Z-201217T1700Z/
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-
426 AM EST Thu Dec 17 2020

...STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY...

* WHAT...Northeast winds 30 to 40 kt with gusts up to 50 kt and 
  seas 12 to 17 feet expected.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 10 PM this evening to noon EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-171500-
/O.CON.KBOX.SR.W.0008.000000T0000Z-201217T1500Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
426 AM EST Thu Dec 17 2020

...STORM WARNING REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 45 kt and 
  seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters.

* WHEN...From 10 PM this evening to 10 AM EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

905 
WHUS71 KBOX 171456
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
956 AM EST Thu Dec 17 2020

ANZ231>235-237-172300-
/O.CAN.KBOX.SR.W.0008.000000T0000Z-201217T1500Z/
/O.EXB.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
956 AM EST Thu Dec 17 2020

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...
...STORM WARNING IS CANCELLED...

* WHAT...Northeast winds becoming north at 25 to 35 kt with gusts
  up to 45 kt, and seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-251-172300-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
956 AM EST Thu Dec 17 2020

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

* WHAT...Northeast winds becoming north 25 to 35 kt with gusts up
  to 45 kt, and seas 12 to 17 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-172000-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201217T2000Z/
Boston Harbor-Narragansett Bay-
956 AM EST Thu Dec 17 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and waves
  2 to 3 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From midnight tonight to 3 PM EST Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254>256-171700-
/O.CON.KBOX.SR.W.0008.000000T0000Z-201217T1700Z/
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-
956 AM EST Thu Dec 17 2020

...STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY...

* WHAT...Northeast winds 30 to 40 kt with gusts up to 50 kt and 
  seas 12 to 17 feet expected.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...From 10 PM this evening to noon EST Thursday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

031 
WHUS71 KBOX 171751
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1251 PM EST Thu Dec 17 2020

ANZ254>256-180200-
/O.EXA.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
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-
1251 PM EST Thu Dec 17 2020

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

* WHAT...Northeast winds becoming north 25 to 35 kt, with gusts 
  up to 45 kt, and seas 12 to 17 feet expected.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-180000-
/O.EXT.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
Boston Harbor-Narragansett Bay-
1251 PM EST Thu Dec 17 2020

...GALE WARNING NOW IN EFFECT UNTIL 7 PM EST THIS EVENING...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt and waves
  2 to 3 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-251-180200-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
1251 PM EST Thu Dec 17 2020

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

* WHAT...Northeast winds becoming north 25 to 35 kt, with gusts 
  up to 45 kt, and seas 12 to 17 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231>235-237-180000-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
1251 PM EST Thu Dec 17 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

* WHAT...Northeast winds becoming north at 25 to 35 kt with 
  gusts up to 45 kt, and seas 7 to 10 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

951 
WHUS71 KBOX 172115
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
415 PM EST Thu Dec 17 2020

ANZ230-236-180515-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
/O.NEW.KBOX.SC.Y.0144.201217T2115Z-201218T1000Z/
Boston Harbor-Narragansett Bay-
415 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 1 to 3 feet.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...Until 5 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ231-232-180300-
/O.EXT.KBOX.GL.W.0052.000000T0000Z-201218T0300Z/
Cape Cod Bay-Nantucket Sound-
415 PM EST Thu Dec 17 2020

...GALE WARNING NOW IN EFFECT UNTIL 10 PM EST THIS EVENING...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  6 to 9 feet.

* WHERE...Nantucket Sound and Cape Cod Bay.

* WHEN...Until 10 PM EST this evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-251-180515-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
415 PM EST Thu Dec 17 2020

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

* WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 
  11 to 16 feet.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ233>235-237-180000-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
415 PM EST Thu Dec 17 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

* WHAT...North winds 20 to 25 kt with gusts up to 35 kt and seas 
  6 to 9 feet.

* WHERE...In Massachusetts coastal waters, Vineyard Sound and 
  Buzzards Bay. In Rhode Island coastal waters, Block Island 
  Sound and Rhode Island Sound.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254>256-180515-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
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-
415 PM EST Thu Dec 17 2020

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

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  11 to 16 feet.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

250 
WHUS71 KBOX 180001
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
701 PM EST Thu Dec 17 2020

ANZ256-180800-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201218T2000Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
701 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 1 to 3 feet.

* WHERE...Coastal Waters from Montauk NY to Marthas Vineyard 
  extending out to 20 nm South of Block Island.

* WHEN...Until 3 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ233>235-237-180800-
/O.EXP.KBOX.GL.W.0052.000000T0000Z-201218T0000Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201218T1200Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
701 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST FRIDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  4 to 6 feet.

* WHERE...In Massachusetts coastal waters, Vineyard Sound and 
  Buzzards Bay. In Rhode Island coastal waters, Rhode Island 
  Sound and Block Island Sound.

* WHEN...Until 7 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-251-180600-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
701 PM EST Thu Dec 17 2020

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

* WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 
  11 to 16 feet.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254-255-180600-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
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-
701 PM EST Thu Dec 17 2020

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

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  11 to 16 feet.

* WHERE...In Massachusetts coastal waters, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket. In Rhode Island coastal waters, 
  Coastal Waters from Montauk NY to Marthas Vineyard extending 
  out to 20 nm South of Block Island.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231-232-180300-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0300Z/
Cape Cod Bay-Nantucket Sound-
701 PM EST Thu Dec 17 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  6 to 9 feet.

* WHERE...Nantucket Sound and Cape Cod Bay.

* WHEN...Until 10 PM EST this evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-236-180800-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T1000Z/
Boston Harbor-Narragansett Bay-
701 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST FRIDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 1 to 3 feet.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...Until 5 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

881 
WHUS71 KBOX 180153
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
853 PM EST Thu Dec 17 2020

ANZ231-232-180600-
/O.EXT.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Cape Cod Bay-Nantucket Sound-
853 PM EST Thu Dec 17 2020

...GALE WARNING NOW IN EFFECT UNTIL 1 AM EST FRIDAY...

* WHAT...North winds 20 to 25 kt with gusts up to 35 kt and seas 
  4 to 7 feet.

* WHERE...Nantucket Sound and Cape Cod Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-251-180600-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
853 PM EST Thu Dec 17 2020

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

* WHAT...North winds 20 to 25 kt with gusts up to 35 kt and seas 
  9 to 14 feet.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ254-255-180600-
/O.CON.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
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-
853 PM EST Thu Dec 17 2020

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

* WHAT...North winds 20 to 25 kt with gusts up to 35 kt and seas 
  10 to 15 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm and Coastal Waters extending out to 25 
  nm South of Marthas Vineyard and Nantucket.

* WHEN...Until 1 AM EST Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ256-181000-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T2000Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
853 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST FRIDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  6 to 9 feet.

* WHERE...Coastal Waters from Montauk NY to Marthas Vineyard 
  extending out to 20 nm South of Block Island.

* WHEN...Until 3 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ233>235-237-181000-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T1200Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
853 PM EST Thu Dec 17 2020

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

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  4 to 6 feet.

* WHERE...In Massachusetts coastal waters, Vineyard Sound and 
  Buzzards Bay. In Rhode Island coastal waters, Block Island 
  Sound and Rhode Island Sound.

* WHEN...Until 7 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ230-236-181000-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T1000Z/
Boston Harbor-Narragansett Bay-
853 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST FRIDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 3 feet.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...Until 5 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

923 
WHUS71 KBOX 180449
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1149 PM EST Thu Dec 17 2020

ANZ231-181300-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201219T0400Z/
Cape Cod Bay-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  4 to 7 feet.

* WHERE...Cape Cod Bay.

* WHEN...Until 11 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ232-181300-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201219T0400Z/
Nantucket Sound-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  3 to 5 feet.

* WHERE...Nantucket Sound.

* WHEN...Until 11 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-251-181300-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201219T0400Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  8 to 13 feet.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Massachusetts Bay and 
  Ipswich Bay.

* WHEN...Until 11 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ254-255-181300-
/O.CAN.KBOX.GL.W.0052.000000T0000Z-201218T0600Z/
/O.EXB.KBOX.SC.Y.0144.000000T0000Z-201219T0400Z/
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-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 35 kt and seas 
  8 to 13 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm and Coastal Waters extending out to 25 
  nm South of Marthas Vineyard and Nantucket.

* WHEN...Until 11 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ256-181300-
/O.EXT.KBOX.SC.Y.0144.000000T0000Z-201219T0400Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EST FRIDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  5 to 8 feet.

* WHERE...Coastal Waters from Montauk NY to Marthas Vineyard 
  extending out to 20 nm South of Block Island.

* WHEN...Until 11 PM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ233>235-237-181200-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T1200Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
1149 PM EST Thu Dec 17 2020

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

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 
  3 to 5 feet.

* WHERE...In Massachusetts coastal waters, Vineyard Sound and 
  Buzzards Bay. In Rhode Island coastal waters, Block Island 
  Sound and Rhode Island Sound.

* WHEN...Until 7 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ230-236-181000-
/O.CON.KBOX.SC.Y.0144.000000T0000Z-201218T1000Z/
Boston Harbor-Narragansett Bay-
1149 PM EST Thu Dec 17 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST FRIDAY...

* WHAT...North winds 10 to 15 kt with gusts up to 25 kt and 
  waves 1 to 3 feet.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...Until 5 AM EST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

Area Forecast Discussion
National Weather Service Boston/Norton MA
1242 PM EST Tue Dec 15 2020

.SYNOPSIS...
Tuesday and Wednesday are quiet and cold. Afternoon wind chill
values inland are in the teens and lower 20s at the coast.
A coastal storm may bring heavy snow, strong winds and coastal
flooding to the region Wednesday night into Thursday. High pressure
builds in for late in the workweek into the weekend. Colder than
average temperatures for late in the week begin to moderate by the
weekend.

&&

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

10 AM update...

Main update this morning was to expand the Winter Storm Watch to
the rest of Massachusetts. The forecast for today is on track.

Previous Discussion...

SPS for patchy black ice remains in effect through the morning
commute. Any leftover moisture from yesterday's precip event
would have frozen with any untreated such surfaces becoming
slippery.

Otherwise, large high pressure over WI beginning to ridge
eastward into Southern New England early this morning. It's a
fairly chilly start with temperatures in the mid 20s to low-mid
30s areawide, though northwest winds gusting to around 25 to 30
mph is making for wind chills in the upper teens to mid 20s!
Colder air aloft advecting into the region will offset full sun
today, and will also be fairly blustery today for most. However
gusts should subside as we move into the early-aftn hrs. Highs
today only top out in the upper 30s to near freezing, and the
wind chill will make it feel cooler than that.

Highlights...

* Patchy black ice possible for early Tuesday

A cold front moved through southern New England overnight and as
a result the temperatures continue to fall - and will continue
heading towards daybreak. Eastern Massachusetts and Rhode Island
have relatively higher dewpoints and as a result icy roads and
surfaces are possible - use caution heading out early this
morning. Otherwise, it's a quiet weather day, outside of a
breezy northwest wind that will occasionally gust to 20mph.
Clear and cool this afternoon as highs struggle to climb out of
the 30s and when you add in the wind it will feel like the teens
and lower 20s this afternoon.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/...
A 1030mb high pressure remains in control for Tuesday night and
much of Wednesday. Decent radiational cooling will occur
overnight thanks to mostly clear skies and light winds -
guidance has much of the area in the teens with single digits
northwest of the Mass Pike. Don't expect much relief Wednesday
as the 925mb temperatures range between -5C and -10C across
southern New England during the afternoon. This will result in
temperatures in the low and middle 20s inland and the low 30s at
the coast. Clouds will increase late in the day ahead of a
coastal storm that could bring a few light snow showers across
southwestern Connecticut during the early evening hours - the
main event will arrive during the early morning hours the
following day.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
Highlights...

* Winter Storm becoming likely Wed night/Thurs. Significant amounts
  of snow and gusty winds are possible. Uncertainty still exists on
  northern extent of heavy snow.

* Chilly Thurs night under high pressure and fresh snowpack.

* Gradual moderating trend with dry conditions rest of the week into
  the weekend.

Details...

Wednesday Night through Thursday:

We continue to monitor developments specific to the potential winter
storm which sets its sights on Southern New England Wednesday night
into a good part of Thursday. This system has the potential to bring
significant amounts of snow that could substantially hamper travel
for the overnight/Thurs AM commute, gusty ENE/NE winds, as well as
minor to lower-end moderate coastal flooding (see the Coastal
Flood section).

On the overnight suite of models and ensembles, a few things where
noted when it comes to changes. The ECMWF returned its QPF shield
back northward compared to its off-cycle 18z run. While the GFS,
which has steadfastly been on the southern side with much less QPF
north of the Mass Pike, did creep northward if ever so slightly
though it still remains on the southern envelope of deterministic
solutions. Because of this net-upward increase in QPF, snow
amounts were adjusted upward as well for most.

In terms of headlines, the adjustment in snow totals and after
collaboration with neighboring WFOs has resulted in the expansion of
the Winter Storm Watch to include the Boston-Worcester-Springfield
metro areas and a portion of the Berkshires. Though the overnight
models did show more QPF further to the north, there remains
significant enough uncertainty in snow amounts that we opted to hold
on Watches up to the Route-2/Merrimack Valley region. Portions of or
all of these areas may need to be considered for a Watch pending
trend in today's forecast QPF.

Big picture: a southern-stream shortwave trough expected to come off
the Southern Rockies into the south-central Plains later today will
begin to deamplify as it progresses into the central Appalachians
Wed nite, tapping into rich Gulf moisture as it does so. A double-
barreled low at sfc is set to cross into the waters south of Long
Island. A strong antecedent 1030+ mb anticyclone should be
associated with enough cold and dry air to force all-snow as a
precip type for all of SNE. Because the 500 mb feature is
deamplifying, the primary cyclone doesn't substantially deepen to
the extent that we typically see with coastal lows/Nor'Easters.
Something to watch especially over the next 24-hrs is how quickly
the 500 mb trough deamplifies, as a slower weakening (e.g.
GEM/ECMWF) may translate to an expanding QPF shield and also
potentially larger snow accumulations. I also note that, for the
most part, the strongest 850-700 mb jets and speed convergence for
potential frontogenetically forced bands looks to be more offshore,
which calls into some question where and how intense snowbands may
truly become outside of CSI/slantwise convective type rates. Those
details are still unclear at this point in time.

We're still about a couple of days away, and model guidance can and
will change between now and then. As mentioned, there are still a
number of uncertainties and unknowns that could shape final
outcomes. Adjustment in snow accumulations resulted in a swath of 8-
12" across much of CT, RI and into southeast MA and Cape Cod; at the
moment, it appears the best potential to achieve locally higher
amounts through banding is in the interior portion of this corridor.
Amounts then taper to the 7-10" neighborhood up to the Mass Pike and
the Boston suburbs. Further north from here, where amounts are
limited by less QPF (though a bit higher than yesterday's runs), new
forecast calls for 4-6".

Looks like the key period of greatest impact regionally is overnight
Wednesday into Thursday morning, when moderate to heavy snow will
combine with northeast winds gusting up to 35-40 mph especially for
areas along and south of the Mass Pike. It certainly could resemble
whiteout to near-blizzard conditions for a time overnight in this
area. System begins to pull away eastward on Thursday, with snow
bands likely trending more intermittent by midday and clearing from
west to east through Thursday afternoon/early night.

Will continue to refine the forecast as we start to look into
the mesoscale models and information gleaned from that suite of
guidance.

Thursday Night:

Conditions to trend toward cleanup/recovery in the Thursday night
period as the system pulls away. Large high pressure builds over SNE
Thurs night. With 925 mb temps around -6 to -10C and a likely fresh
snowpack, temperatures should really radiate quite well. Have
widespread lows in the low to mid teens, except mid upper teens to
mid 20s near the eastern MA coast.

Friday and Beyond:

Didn't spend as much time on this portion of the forecast given the
midweek storm system. Looks to be a generally quiet period, with a
weak or dry frontal passage around Sunday before high pressure
returns for Monday. Temperatures start off cooler than average, then
trend near to slightly above normal for Sunday/Monday.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

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

18z TAF Update:

This afternoon: High confidence.

VFR. Gusty NW winds, peaking around 25-28 kt will begin to
subside by 19z.

Tonight: High confidence.

VFR, dimininishing NW winds/gusts to light north.

Wednesday: High confidence.

VFR, though clouds start to thicken late in the day S/W. Light
winds become NE and increase to 7-11 kt late.

Wednesday night: MVFR/IFR conditions possible in moderate to
heavy snow showers. Strong winds with gusts 25 to 45 kts.

KBOS TAF...High confidence in the TAF.

KBDL TAF...High confidence in the TAF.

Outlook /Thursday through Saturday/...

Thursday: MVFR/IFR conditions possible. Strong winds with gusts
up to 45 kt. SN likely.

Thursday Night: Mainly VFR, with local MVFR possible. Windy
with areas of gusts up to 35 kt.

Friday through Friday Night: VFR. Breezy.

Saturday: VFR.

&&

.MARINE...
*** Gale Warning Tonight For Strong NW Winds ***

Tuesday...high confidence.

Sub 980 mb low over Newfoundland and 1030+ mb high over Ontario will
result in strong NW winds across the waters. Possible gale force
early Tue, then slowly easing later in the day as high pressure
advects closer to New England.

Tuesday night...high confidence.

High pressure moving overhead with gusty but decreasing NW
winds. Seas 3-7 ft.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Moderate risk for gale force winds with gusts
up to 40 kt. Areas of rough seas. Snow, rain. Areas of
visibility 1 nm or less.

Thursday: Moderate risk for gale force winds with gusts up to
40 kt. Rough seas up to 15 ft. Rain likely, chance of snow.
Local visibility 1 nm or less.

Thursday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 30 kt. Rough seas up to 14 ft. Slight chance
of rain showers, slight chance of snow showers.

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Rough seas up to 10 ft.

Friday Night: Winds less than 25 kt. Areas of rough seas.

Saturday: Winds less than 25 kt. Local rough seas.

&&

.TIDES/COASTAL FLOODING...
Thursday:

Coastal low passing SE of Nantucket is expected to produce a
storm surge of around 2 feet with the early afternoon high tide
(11.3 FT MLLW at Boston and 4.0 FT MLLW at Nantucket Harbor), which
is expected to produce minor coastal flooding along E MA coast,
especially south of Boston to Nantucket where winds and seas will be
greater.  System is not forecast to deepen rapidly so N/NE winds
should not be strong enough (35-40kt) or seas have enough time to
build significantly (10-15 ft) to produce more significant impacts,
although strength of high pressure to our north could help
winds/seas get higher than currently expected.

Since we are still a few days away we still need to monitor
potential for a change in the track of the low as well as its
strength. A stronger system, or one that tracks closer to the
region, could produce lower-end moderate coastal flooding. That
would be a worst case scenario which is unlikely right now.

We do need to be concerned for minor beach erosion, which could
have more of an impact in more vulnerable locations such as Plum
Island.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Winter Storm Watch from Wednesday evening through Thursday
     afternoon for CTZ002>004.
MA...Winter Storm Watch from Wednesday evening through Thursday
     afternoon for MAZ002>023-026.
RI...Winter Storm Watch from Wednesday evening through Thursday
     afternoon for RIZ001>008.
MARINE...Gale Watch from Wednesday afternoon through late Thursday
     night for ANZ231>235-237-250-251-254>256.
     Small Craft Advisory until 7 PM EST this evening for
     ANZ232>235-237.
     Small Craft Advisory until 1 PM EST this afternoon for ANZ230-
     236.
     Small Craft Advisory until 1 AM EST Wednesday for ANZ255-256.

&&

SYNOPSIS...Loconto/Gaucher
NEAR TERM...Loconto/BW/Gaucher
SHORT TERM...Gaucher
LONG TERM...Loconto
AVIATION...Loconto/BW
MARINE...Loconto/Gaucher
TIDES/COASTAL FLOODING...

Hazardous Weather Outlook
National Weather Service Boston/Norton MA
1027 AM EST Tue Dec 15 2020

CTZ002>004-MAZ017>023-RIZ001>008-161530-
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-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
1027 AM EST Tue Dec 15 2020

...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY AFTERNOON...

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

.DAY ONE...Today and 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.

   Winter Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ024-161530-
Nantucket MA-
1027 AM EST Tue Dec 15 2020

This Hazardous Weather Outlook is for southeastern Massachusetts.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ002>016-026-161530-
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA-
Eastern Hampden MA-Southern Worcester MA-Western Norfolk MA-
Southeast Middlesex MA-Suffolk MA-Eastern Norfolk MA-
Northern Middlesex MA-
1027 AM EST Tue Dec 15 2020

...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY AFTERNOON...

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

.DAY ONE...Today and 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.

   Winter Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ231>235-237-250-251-254>256-161530-
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-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-
1027 AM EST Tue Dec 15 2020

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

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

.DAY ONE...Today and 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 Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230-236-161530-
Boston Harbor-Narragansett Bay-
1027 AM EST Tue Dec 15 2020

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

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For more information on upcoming hazardous weather, please see the
Area Forecast Discussion on our webpage for the latest forecast
thinking. There is also our Enhanced Hazardous Weather Outlook at
www.weather.gov/box/ehwo

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

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