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Small Craft Advisory 0078
Issued by the Boston Forecast Office

Action Issued Starts Expiration
New 2026-08-15 13:02:22 2026-08-17 01:00:00 2026-08-18 01:00:00
New 2026-08-15 13:02:22 2026-08-17 07:00:00 2026-08-17 22:00:00
Continued 2026-08-16 01:46:43 2026-08-17 07:00:00 2026-08-17 22:00:00
Continued 2026-08-16 01:46:43 2026-08-17 01:00:00 2026-08-18 01:00:00


Action: New
Issued At: 2026-08-15 13:02:22

987 
WHUS71 KBOX 151801
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
201 PM EDT Sat Aug 15 2026

ANZ233>235-237-255-256-160715-
/O.NEW.KBOX.SC.Y.0078.260817T0600Z-260818T0600Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
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-
201 PM EDT Sat Aug 15 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 2 AM EDT
TUESDAY...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 4 to 6 feet expected.

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

* WHEN...From 2 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-232-250-251-254-160715-
/O.NEW.KBOX.SC.Y.0078.260817T1200Z-260818T0300Z/
Cape Cod Bay-Nantucket 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-
201 PM EDT Sat Aug 15 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 11 PM EDT MONDAY...

* WHAT...East winds 10 to 20 kt with gusts up to 30 kt and seas 
  3 to 5 feet expected.

* WHERE...Cape Cod Bay, Nantucket Sound, Coastal waters east of 
  Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, 
  Massachusetts Bay and Ipswich Bay and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 NM.

* WHEN...From 8 AM to 11 PM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: New
Issued At: 2026-08-15 13:02:22

987 
WHUS71 KBOX 151801
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
201 PM EDT Sat Aug 15 2026

ANZ233>235-237-255-256-160715-
/O.NEW.KBOX.SC.Y.0078.260817T0600Z-260818T0600Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
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-
201 PM EDT Sat Aug 15 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 2 AM EDT
TUESDAY...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 4 to 6 feet expected.

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

* WHEN...From 2 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-232-250-251-254-160715-
/O.NEW.KBOX.SC.Y.0078.260817T1200Z-260818T0300Z/
Cape Cod Bay-Nantucket 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-
201 PM EDT Sat Aug 15 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 11 PM EDT MONDAY...

* WHAT...East winds 10 to 20 kt with gusts up to 30 kt and seas 
  3 to 5 feet expected.

* WHERE...Cape Cod Bay, Nantucket Sound, Coastal waters east of 
  Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, 
  Massachusetts Bay and Ipswich Bay and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 NM.

* WHEN...From 8 AM to 11 PM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-08-16 01:46:43

335 
WHUS71 KBOX 160646
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
246 AM EDT Sun Aug 16 2026

ANZ233>235-237-255-256-162200-
/O.CON.KBOX.SC.Y.0078.260817T0600Z-260818T0600Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
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-
246 AM EDT Sun Aug 16 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO
2 AM EDT TUESDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 4 to 7 feet expected.

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

* WHEN...From 2 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-232-250-251-254-162200-
/O.CON.KBOX.SC.Y.0078.260817T1200Z-260818T0300Z/
Cape Cod Bay-Nantucket 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-
246 AM EDT Sun Aug 16 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM TO 11 PM EDT
MONDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 3 to 5 feet expected.

* WHERE...Cape Cod Bay, Nantucket Sound, Coastal waters east of 
  Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, 
  Massachusetts Bay and Ipswich Bay and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 NM.

* WHEN...From 8 AM to 11 PM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-08-16 01:46:43

335 
WHUS71 KBOX 160646
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
246 AM EDT Sun Aug 16 2026

ANZ233>235-237-255-256-162200-
/O.CON.KBOX.SC.Y.0078.260817T0600Z-260818T0600Z/
Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound-
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-
246 AM EDT Sun Aug 16 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO
2 AM EDT TUESDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 4 to 7 feet expected.

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

* WHEN...From 2 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ231-232-250-251-254-162200-
/O.CON.KBOX.SC.Y.0078.260817T1200Z-260818T0300Z/
Cape Cod Bay-Nantucket 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-
246 AM EDT Sun Aug 16 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM TO 11 PM EDT
MONDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 3 to 5 feet expected.

* WHERE...Cape Cod Bay, Nantucket Sound, Coastal waters east of 
  Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, 
  Massachusetts Bay and Ipswich Bay and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 NM.

* WHEN...From 8 AM to 11 PM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$



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