Alert archive / Massachusetts / Small Craft Advisories in 2021

Small Craft Advisory 31, NWS Boston/Norton, MA

March 19, 2021

NWS Boston/Norton, MA issued this small craft advisory at Mar 19, 2021, 6:35 AM EDT. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued
Mar 19, 2021, 6:35 AM EDT (10:35 UTC)
Expired
Mar 20, 2021, 8:00 AM EDT
In force
25 hr
Issued by
NWS Boston/Norton, MA

The text

As transmitted.

538 
WHUS71 KBOX 191035
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
635 AM EDT Fri Mar 19 2021

ANZ254>256-192100-
/O.CAN.KBOX.SR.W.0003.000000T0000Z-210319T1500Z/
/O.EXB.KBOX.GL.W.0017.000000T0000Z-210319T2100Z/
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-
635 AM EDT Fri Mar 19 2021

...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...
...STORM WARNING IS CANCELLED...

* WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 
  8 to 13 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 5 PM EDT this afternoon.

* 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.

&&

$$

ANZ230-236-192100-
/O.CAN.KBOX.GL.W.0017.000000T0000Z-210319T1500Z/
/O.NEW.KBOX.SC.Y.0031.210319T1035Z-210319T2100Z/
Boston Harbor-Narragansett Bay-
635 AM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...
...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 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-191800-
/O.EXT.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Cape Cod Bay-
635 AM EDT Fri Mar 19 2021

...GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...North winds 25 to 30 kt with gusts up to 35 kt and seas 
  6 to 11 feet.

* WHERE...Cape Cod Bay.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

ANZ233-234-191800-
/O.EXT.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Vineyard Sound-Buzzards Bay-
635 AM EDT Fri Mar 19 2021

...GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...North winds 25 to 30 kt with gusts up to 35 kt and seas 
  4 to 6 feet.

* WHERE...Vineyard Sound and Buzzards Bay.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

ANZ250-191800-
/O.EXT.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
635 AM EDT Fri Mar 19 2021

...GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...North winds 25 to 30 kt with gusts up to 35 kt and seas 
  10 to 13 feet.

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

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

ANZ232-191800-
/O.EXT.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Nantucket Sound-
635 AM EDT Fri Mar 19 2021

...GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet.

* WHERE...Nantucket Sound.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

ANZ251-191800-
/O.CON.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Massachusetts Bay and Ipswich Bay-
635 AM EDT Fri Mar 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt and seas 
  6 to 11 feet.

* WHERE...Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

ANZ235-237-191800-
/O.CON.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
Rhode Island Sound-Block Island Sound-
635 AM EDT Fri Mar 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

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

* WHERE...Block Island Sound and Rhode Island Sound.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$
6 follow-up statements
598 
WHUS71 KBOX 191803
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
203 PM EDT Fri Mar 19 2021

ANZ256-200600-
/O.CAN.KBOX.GL.W.0017.000000T0000Z-210319T2100Z/
/O.EXB.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
203 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 20 to 30 kt with gusts up to 35 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 2 AM EDT Saturday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ232-192100-
/O.EXP.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
/O.NEW.KBOX.GL.W.0018.210319T1803Z-210319T2100Z/
Nantucket Sound-
203 PM EDT Fri Mar 19 2021

...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  3 to 5 feet.

* WHERE...Nantucket Sound.

* WHEN...Until 5 PM EDT this afternoon.

* 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.

&&

$$

ANZ231-251-200600-
/O.EXP.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
/O.EXB.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
203 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY...
...GALE WARNING HAS EXPIRED...

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

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 AM EDT Saturday.

* 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>235-237-200000-
/O.EXP.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
/O.EXB.KBOX.SC.Y.0031.000000T0000Z-210320T0000Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
203 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 15 to 25 kt with gusts up to 35 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 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-200715-
/O.EXP.KBOX.GL.W.0017.000000T0000Z-210319T1800Z/
/O.EXB.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
203 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 35 kt and 
  seas 7 to 12 feet.

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

* WHEN...Until 8 AM EDT Saturday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ254-255-192100-
/O.CON.KBOX.GL.W.0017.000000T0000Z-210319T2100Z/
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-
203 PM EDT Fri Mar 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  9 to 14 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 5 PM EDT this afternoon.

* 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.

&&

$$

ANZ230-236-192100-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210319T2100Z/
Boston Harbor-Narragansett Bay-
203 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and 
  waves 2 to 3 feet.

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

* WHEN...Until 5 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
097 
WHUS71 KBOX 192104
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
504 PM EDT Fri Mar 19 2021

ANZ232-201015-
/O.EXP.KBOX.GL.W.0018.000000T0000Z-210319T2100Z/
/O.EXA.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Nantucket Sound-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  4 to 7 feet.

* WHERE...Nantucket Sound.

* WHEN...Until 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ254-255-201015-
/O.EXP.KBOX.GL.W.0017.000000T0000Z-210319T2100Z/
/O.EXA.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
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-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  7 to 12 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 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ230-236-192215-
/O.EXP.KBOX.SC.Y.0031.000000T0000Z-210319T2100Z/
Boston Harbor-Narragansett Bay-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...

Winds have fallen below Small Craft Advisory criteria.

$$

ANZ256-201015-
/O.EXT.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT SATURDAY...

* WHAT...North winds 10 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 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-251-200600-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  5 to 8 feet.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 AM EDT Saturday.

* 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>235-237-200000-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0000Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...North winds 10 to 15 kt with gusts up to 25 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 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-201015-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
504 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

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

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

* WHEN...Until 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
169 
WHUS71 KBOX 192105
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
505 PM EDT Fri Mar 19 2021

ANZ231-251-200600-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
505 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  5 to 8 feet.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 AM EDT Saturday.

* 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>235-237-200000-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0000Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
505 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...North winds 10 to 15 kt with gusts up to 25 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 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ232-250-254>256-201015-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Nantucket Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
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-
505 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  7 to 10 feet.

* WHERE...In Massachusetts coastal waters, Nantucket Sound, 
  Coastal waters east of Ipswich Bay and the Stellwagen Bank 
  National Marine Sanctuary, Coastal waters from Provincetown MA 
  to Chatham MA to Nantucket MA out 20 nm 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 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
259 
WHUS71 KBOX 192346
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
746 PM EDT Fri Mar 19 2021

ANZ233>235-237-200100-
/O.CAN.KBOX.SC.Y.0031.000000T0000Z-210320T0000Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
746 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds have dropped below Small Craft Advisory criteria, thus we've
cancelled the advisory.

$$

ANZ231-251-200600-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
746 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...

* WHAT...North winds 10 to 15 kt with gusts up to 25 kt and seas 
  4 to 6 feet.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ232-250-254>256-201200-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Nantucket Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
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-
746 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  6 to 9 feet.

* WHERE...In Massachusetts coastal waters, Nantucket Sound, 
  Coastal waters east of Ipswich Bay and the Stellwagen Bank 
  National Marine Sanctuary, Coastal waters from Provincetown MA 
  to Chatham MA to Nantucket MA out 20 nm 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 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
524 
WHUS71 KBOX 200217
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1017 PM EDT Fri Mar 19 2021

ANZ232-200330-
/O.CAN.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Nantucket Sound-
1017 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Small Craft Advisory has been cancelled as a result of wave
heightsand wind gusts falling below advisory criteria.

$$

ANZ231-200330-
/O.CAN.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Cape Cod Bay-
1017 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Small Craft Advisory has been cancelled as a result of wave
heightsand wind gusts falling below advisory criteria.

$$

ANZ256-200600-
/O.EXT.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1017 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT SATURDAY...

* WHAT...North winds 10 to 15 kt and seas 3 to 5 feet.

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

* WHEN...Until 2 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ251-200600-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T0600Z/
Massachusetts Bay and Ipswich Bay-
1017 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...

* WHAT...Northwest winds 10 to 15 kt and seas 3 to 5 feet.

* WHERE...Massachusetts Bay and Ipswich Bay.

* WHEN...Until 2 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-254-255-201200-
/O.CON.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1017 PM EDT Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and seas 
  5 to 8 feet.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary, Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 
  Coastal Waters extending out to 25 nm South of Marthas 
  Vineyard and Nantucket.

* WHEN...Until 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
701 
WHUS71 KBOX 201151
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
751 AM EDT Sat Mar 20 2021

ANZ254-201300-
/O.EXP.KBOX.SC.Y.0031.000000T0000Z-210320T1200Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
751 AM EDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING...

Winds and waves have fallen below Small Craft Advisory limits.
Therefore, the Small Craft Advisory will be allowed to expire. 

$$

BL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 2:03 PM EDTGale WarningBOX3 hr

Nearby

Small Craft Advisories in Massachusetts, 2021Every small craft advisory in 2021

Sources

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