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Marine Coastal Hazard Message - Issued When Needed
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Expires:202510132300;Remove:202510132300;078216
WHUS41 KBOX 131917
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
317 PM EDT Mon Oct 13 2025


MAZ007-015-016-019-022>024-132300-
/O.CON.KBOX.CF.Y.0009.000000T0000Z-251013T2300Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
317 PM EDT Mon Oct 13 2025

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WHAT...Up to one half foot of inundation above ground level in 
  low-lying areas near shorelines and tidal waterways (3.5 to 
  12.1 feet Mean Lower Low Water).

* WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, 
  Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA 
  Counties.

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

* IMPACTS...Roads remain passable. Low lying areas and roads 
  near Nantucket Harbor, including Easy Street, may experience 
  pockets of shallow flooding less than one foot deep.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

&&

&&

Time of high total tides are approximate to the nearest hour.

Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.9 ft, Moderate 3.4 ft, Major 5.4 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  11.2/11.7   1.6/ 2.0   1.1/ 1.6   14-15     None    
 14/06 AM   9.2/ 9.7  -0.5/ 0.0   0.7/ 1.1    12       None    
 14/06 PM  10.1/10.6   0.5/ 1.0   0.5/ 1.0    8-9      None    
 15/07 AM   9.0/ 9.5  -0.7/-0.2   0.6/ 1.1     5       None

Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  10.1/10.6   0.6/ 1.1   1.1/ 1.6     9       None    
 14/06 AM   8.3/ 8.8  -1.3/-0.8   0.7/ 1.1     7       None    
 14/06 PM   9.1/ 9.6  -0.5/ 0.0   0.5/ 1.0     5       None    
 15/07 AM   8.1/ 8.6  -1.5/-1.0   0.6/ 1.1     4       None

Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.2 ft, Moderate 3.7 ft, Major 4.7 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  11.6/12.1   1.3/ 1.8   1.2/ 1.7     2       None    
 14/06 AM   9.7/10.2  -0.7/-0.2   0.8/ 1.3     2       None    
 14/06 PM  10.5/11.0   0.2/ 0.7   0.6/ 1.1    1-2      None    
 15/07 AM   9.5/10.0  -0.9/-0.4   0.7/ 1.1    1-2      None

Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  11.3/11.8   1.4/ 1.9   1.1/ 1.6     2       None    
 14/06 AM   9.4/ 9.9  -0.6/-0.1   0.8/ 1.3     2       None    
 14/06 PM  10.3/10.8   0.4/ 0.9   0.6/ 1.1    1-2      None    
 15/07 AM   9.2/ 9.7  -0.8/-0.2   0.7/ 1.1     1       None

Green Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.6 ft, Moderate 3.6 ft, Major 5.6 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  12.1/12.6   2.2/ 2.7   1.8/ 2.2     8      Minor    
 14/06 AM   9.6/10.1  -0.3/ 0.2   0.9/ 1.4     6       None    
 14/06 PM  10.6/11.1   0.7/ 1.1   0.7/ 1.1    4-5      None    
 15/07 AM   9.3/ 9.8  -0.7/-0.2   0.7/ 1.1     3       None

Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  10.9/11.4   1.2/ 1.7   1.8/ 2.2    13       None    
 14/06 AM   9.4/ 9.9  -0.3/ 0.2   0.9/ 1.4    10       None    
 14/06 PM  10.2/10.7   0.5/ 1.0   0.6/ 1.1    7-8      None    
 15/07 AM   9.2/ 9.7  -0.6/-0.1   0.7/ 1.1     4       None

Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/02 PM   3.9/ 4.4   1.9/ 2.3   1.6/ 2.0     6       None    
 14/02 AM   2.5/ 3.0   0.5/ 1.0   1.0/ 1.5     5       None    
 14/03 PM   2.7/ 3.2   0.8/ 1.3   0.7/ 1.1     4       None    
 15/03 AM   2.2/ 2.7   0.2/ 0.7   0.7/ 1.1    2-3      None

Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 3.8 ft, Moderate 6.3 ft, Major 7.8 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/06 PM   6.5/ 7.0   1.3/ 1.8   0.8/ 1.3   10-11     None    
 14/06 AM   5.1/ 5.6  -0.2/ 0.3   0.7/ 1.1    8-9      None    
 14/07 PM   6.0/ 6.5   0.8/ 1.3   0.6/ 1.1    6-7      None    
 15/08 AM   5.2/ 5.7   0.0/ 0.5   0.6/ 1.1     5       None

Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/06 PM   5.7/ 6.2   1.2/ 1.7   0.9/ 1.4     9       None    
 14/07 AM   4.4/ 4.9  -0.2/ 0.3   0.7/ 1.1     7       None    
 14/07 PM   5.2/ 5.7   0.7/ 1.1   0.6/ 1.1     6       None    
 15/08 AM   4.5/ 5.0   0.0/ 0.5   0.7/ 1.1     4       None

Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  11.4/11.9   1.3/ 1.8   1.2/ 1.7    10       None    
 14/06 AM   9.7/10.2  -0.5/ 0.0   0.9/ 1.4     8       None    
 14/06 PM  10.5/11.0   0.4/ 0.9   0.7/ 1.1     6       None    
 15/07 AM   9.5/10.0  -0.7/-0.2   0.8/ 1.3     4       None

Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  12.3/12.8   1.8/ 2.2   1.3/ 1.8     6       None    
 14/06 AM  10.4/10.9  -0.2/ 0.3   1.0/ 1.5     5       None    
 14/06 PM  11.4/11.9   0.9/ 1.4   0.9/ 1.4     4       None    
 15/07 AM  10.1/10.6  -0.5/ 0.0   0.8/ 1.3     3       None

Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/05 PM  10.7/11.2   0.4/ 0.9   1.6/ 2.0     5       None    
 14/06 AM   8.7/ 9.2  -1.7/-1.2   1.1/ 1.6     4       None    
 14/06 PM   9.6/10.1  -0.8/-0.2   0.9/ 1.4     3       None    
 15/07 AM   8.5/ 9.0  -1.9/-1.4   0.9/ 1.4     2       None

Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/02 PM   5.1/ 5.6   0.7/ 1.1   0.9/ 1.4     4       None    
 14/03 AM   3.9/ 4.4  -0.6/-0.1   0.2/ 0.8     3       None    
 14/03 PM   4.2/ 4.7  -0.2/ 0.2   0.2/ 0.7     3       None    
 15/04 AM   3.9/ 4.4  -0.6/-0.1   0.2/ 0.8    1-2      None

Edgartown
MLLW Categories - Minor 4.0 ft, Moderate 5.0 ft, Major 7.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 4.3 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/06 PM   4.2/ 4.7   1.6/ 2.0   1.4/ 1.9     7      Minor    
 14/06 AM   3.0/ 3.5   0.2/ 0.8   1.0/ 1.5     6       None    
 14/07 PM   3.7/ 4.2   1.0/ 1.5   0.9/ 1.4     5       None    
 15/08 AM   3.0/ 3.5   0.2/ 0.8   0.8/ 1.3     3       None

Vineyard Haven
MLLW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.0 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/06 PM   3.5/ 4.0   1.5/ 2.0   1.5/ 2.0    5-6      None    
 14/06 AM   2.5/ 3.0   0.5/ 1.0   0.9/ 1.4    4-5      None    
 14/07 PM   2.7/ 3.2   0.7/ 1.1   0.8/ 1.3     4       None    
 15/07 AM   2.3/ 2.8   0.4/ 0.9   0.8/ 1.3     2       None

Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 13/06 PM   5.2/ 5.7   1.6/ 2.0   1.2/ 1.7    10      Minor    
 14/07 AM   3.7/ 4.2   0.1/ 0.6   0.8/ 1.3     8       None    
 14/07 PM   4.6/ 5.1   1.0/ 1.5   0.8/ 1.3    6-7      None    
 15/08 AM   3.7/ 4.2   0.2/ 0.7   0.8/ 1.3    4-5      None

&&

$$

 

 



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