BOX continues Coastal Flood Advisory (Barnstable, Dukes, Eastern Essex, Eastern Norfolk, Eastern Plymouth, Nantucket, Suffolk [MA] and Block Island, Newport, Washington [RI]) .
415
WHUS41 KBOX 120721
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
321 AM EDT Sun Oct 12 2025
MAZ007-015-016-019-022>024-122030-
/O.CON.KBOX.CF.Y.0007.251012T1800Z-251012T2200Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
321 AM EDT Sun Oct 12 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 6 PM EDT THIS EVENING...
* WHAT...Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways (3.7 to 12.9 feet Mean Lower Low Water).
* WHERE...Eastern Essex, Suffolk, Eastern Norfolk, Eastern
Plymouth, Barnstable, Dukes and Nantucket Counties.
* WHEN...From 2 PM this afternoon to 6 PM EDT this evening.
* IMPACTS...Roads remain passable. Shallow pockets of flooding
less than one foot deep affect more vulnerable coastal roads
along the North Shore from Salem and Gloucester to
Newburyport. Rough surf will likely cause some splashover onto
coastal roads around the time of high tide. 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.2/ 9.7 -0.5/ 0.0 0.1/ 0.6 2-3 None
12/04 PM 11.4/11.9 1.8/ 2.2 0.9/ 1.4 5-7 Minor
13/05 AM 10.0/10.5 0.4/ 0.9 1.3/ 1.8 11-12 None
13/05 PM 11.4/11.9 1.8/ 2.2 1.3/ 1.8 13 Minor
14/06 AM 9.5/10.0 -0.2/ 0.3 1.0/ 1.5 11 None
14/06 PM 10.4/10.9 0.8/ 1.3 0.8/ 1.3 8-9 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
-------- --------- --------- --------- ------- --------
12/04 AM 8.2/ 8.7 -1.4/-0.9 0.1/ 0.6 1-2 None
12/04 PM 10.3/10.8 0.8/ 1.3 0.9/ 1.4 4-6 None
13/05 AM 9.1/ 9.6 -0.5/ 0.0 1.3/ 1.8 8-9 None
13/05 PM 10.1/10.6 0.6/ 1.1 1.1/ 1.6 9 None
14/06 AM 8.6/ 9.1 -1.0/-0.5 1.0/ 1.5 7-8 None
14/06 PM 9.4/ 9.9 -0.2/ 0.3 0.8/ 1.3 5-6 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.8/10.3 -0.6/-0.1 0.2/ 0.7 1-2 None
12/04 PM 11.9/12.4 1.6/ 2.0 1.0/ 1.5 2 None
13/05 AM 10.5/11.0 0.2/ 0.7 1.3/ 1.8 2 None
13/05 PM 11.7/12.2 1.4/ 1.9 1.3/ 1.8 2 None
14/06 AM 9.9/10.4 -0.5/ 0.0 1.0/ 1.5 2 None
14/06 PM 10.8/11.3 0.5/ 1.0 0.9/ 1.4 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.6/10.1 -0.3/ 0.2 0.2/ 0.7 1-2 None
12/04 PM 11.6/12.1 1.7/ 2.2 0.9/ 1.4 2 None
13/05 AM 10.1/10.6 0.2/ 0.7 1.2/ 1.7 2 None
13/05 PM 11.4/11.9 1.5/ 2.0 1.2/ 1.7 2 None
14/06 AM 9.6/10.1 -0.3/ 0.2 1.0/ 1.5 2 None
14/06 PM 10.6/11.1 0.7/ 1.1 0.9/ 1.4 1-2 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.5/10.0 -0.5/ 0.0 0.2/ 0.7 1-3 None
12/04 PM 11.8/12.3 1.9/ 2.3 1.0/ 1.5 3-4 Minor
13/05 AM 10.7/11.2 0.8/ 1.3 1.7/ 2.2 6-7 None
13/05 PM 12.7/13.2 2.7/ 3.2 2.3/ 2.8 8 Minor
14/06 AM 10.0/10.5 0.1/ 0.6 1.3/ 1.8 6-7 None
14/06 PM 10.9/11.4 1.0/ 1.5 1.0/ 1.5 5-6 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.3/ 9.8 -0.5/ 0.0 0.2/ 0.7 1-3 None
12/04 PM 11.5/12.0 1.8/ 2.2 1.0/ 1.5 4-5 Minor
13/05 AM 10.2/10.7 0.5/ 1.0 1.5/ 2.0 8-9 None
13/05 PM 11.6/12.1 1.9/ 2.3 2.5/ 3.0 10 Minor
14/06 AM 9.7/10.2 0.0/ 0.5 1.2/ 1.7 8-9 None
14/06 PM 10.5/11.0 0.8/ 1.3 0.9/ 1.4 6-7 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
-------- --------- --------- --------- ------- --------
12/01 PM 3.6/ 4.1 1.6/ 2.0 1.1/ 1.6 4-5 None
13/02 AM 3.5/ 4.0 1.5/ 2.0 1.9/ 2.3 6 None
13/02 PM 3.9/ 4.4 1.9/ 2.3 1.6/ 2.0 6 None
14/02 AM 2.7/ 3.2 0.7/ 1.1 1.2/ 1.7 5 None
14/03 PM 3.1/ 3.6 1.1/ 1.6 1.0/ 1.5 4 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
-------- --------- --------- --------- ------- --------
12/05 AM 5.2/ 5.7 0.0/ 0.5 0.2/ 0.8 2-4 None
12/05 PM 6.9/ 7.4 1.7/ 2.2 0.9/ 1.4 6-8 None
13/06 AM 5.9/ 6.4 0.7/ 1.1 1.2/ 1.7 11 None
13/06 PM 6.7/ 7.2 1.5/ 2.0 1.0/ 1.5 11 None
14/07 AM 5.2/ 5.7 0.1/ 0.6 0.8/ 1.3 8-9 None
14/07 PM 6.2/ 6.7 1.0/ 1.5 0.8/ 1.3 7 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
-------- --------- --------- --------- ------- --------
12/05 AM 4.0/ 4.5 -0.5/ 0.0 0.2/ 0.7 2-3 None
12/05 PM 5.7/ 6.2 1.3/ 1.8 0.9/ 1.4 5-7 None
13/06 AM 4.9/ 5.4 0.4/ 0.9 1.1/ 1.6 9-10 None
13/06 PM 5.7/ 6.2 1.3/ 1.8 1.0/ 1.5 9 None
14/07 AM 4.5/ 5.0 0.0/ 0.5 0.8/ 1.3 7-8 None
14/07 PM 5.2/ 5.7 0.8/ 1.3 0.7/ 1.1 6 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.8/10.3 -0.3/ 0.2 0.2/ 0.8 2-3 None
12/04 PM 11.8/12.3 1.7/ 2.2 1.1/ 1.6 4-6 None
13/05 AM 10.7/11.2 0.6/ 1.1 1.6/ 2.0 9-10 None
13/05 PM 11.9/12.4 1.8/ 2.2 1.7/ 2.2 10 None
14/06 AM 10.2/10.7 0.1/ 0.6 1.4/ 1.9 8-9 None
14/06 PM 11.1/11.6 1.0/ 1.5 1.3/ 1.8 7-8 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
-------- --------- --------- --------- ------- --------
12/04 AM 10.6/11.1 0.1/ 0.6 0.5/ 1.0 2-3 None
12/04 PM 12.7/13.2 2.2/ 2.7 1.2/ 1.7 3-5 None
13/05 AM 11.4/11.9 0.9/ 1.4 1.7/ 2.2 6-7 None
13/05 PM 12.7/13.2 2.2/ 2.7 1.7/ 2.2 6 None
14/06 AM 10.9/11.4 0.4/ 0.9 1.5/ 2.0 5-6 None
14/06 PM 11.9/12.4 1.4/ 1.9 1.4/ 1.9 5 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
-------- --------- --------- --------- ------- --------
12/04 AM 9.1/ 9.6 -1.3/-0.8 0.9/ 1.4 2-3 None
12/04 PM 11.0/11.5 0.7/ 1.1 1.5/ 2.0 3-4 None
13/05 AM 10.0/10.5 -0.3/ 0.2 2.1/ 2.6 5 None
13/05 PM 11.2/11.7 0.9/ 1.4 2.1/ 2.6 5 None
14/06 AM 9.2/ 9.7 -1.1/-0.7 1.6/ 2.0 4-5 None
14/06 PM 10.1/10.6 -0.2/ 0.2 1.4/ 1.9 4 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
-------- --------- --------- --------- ------- --------
12/03 AM 2.7/ 3.2 -1.8/-1.3 0.2/ 0.7 2-3 None
12/01 PM 5.2/ 5.7 0.8/ 1.3 0.7/ 1.1 3 None
13/02 AM 5.0/ 5.5 0.6/ 1.1 1.4/ 1.9 4 None
13/02 PM 5.4/ 5.9 1.0/ 1.5 1.2/ 1.7 4 None
14/03 AM 4.4/ 4.9 0.0/ 0.5 0.8/ 1.3 3-4 None
14/03 PM 4.5/ 5.0 0.1/ 0.6 0.5/ 1.0 3 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
-------- --------- --------- --------- ------- --------
12/05 AM 2.5/ 3.0 -0.2/ 0.2 0.5/ 1.0 3-4 None
12/05 PM 4.2/ 4.7 1.6/ 2.0 1.4/ 1.9 6-7 Minor
13/06 AM 3.9/ 4.4 1.2/ 1.7 1.9/ 2.3 8 Minor
13/06 PM 4.4/ 4.9 1.7/ 2.2 1.5/ 2.0 7-8 Minor
14/06 AM 3.1/ 3.6 0.4/ 0.9 1.1/ 1.6 6 None
14/07 PM 3.7/ 4.2 1.1/ 1.6 1.0/ 1.5 5 Minor
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
-------- --------- --------- --------- ------- --------
12/04 AM 2.1/ 2.6 0.1/ 0.6 0.5/ 1.0 2-3 None
12/05 PM 3.5/ 4.0 1.5/ 2.0 1.4/ 1.9 4-6 None
13/06 AM 3.4/ 3.9 1.4/ 1.9 1.9/ 2.3 6 None
13/06 PM 3.6/ 4.1 1.6/ 2.0 1.6/ 2.0 5-6 None
14/06 AM 2.7/ 3.2 0.7/ 1.1 1.1/ 1.6 4-5 None
14/06 PM 2.8/ 3.4 0.9/ 1.4 1.1/ 1.6 4 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
-------- --------- --------- --------- ------- --------
12/05 AM 3.4/ 3.9 -0.2/ 0.2 0.4/ 0.9 3-5 None
12/05 PM 5.2/ 5.7 1.6/ 2.0 1.1/ 1.6 7-9 Minor
13/06 AM 4.6/ 5.1 1.0/ 1.5 1.6/ 2.0 10-11 None
13/06 PM 5.2/ 5.7 1.6/ 2.0 1.2/ 1.7 10 Minor
14/07 AM 4.0/ 4.5 0.4/ 0.9 1.1/ 1.6 8 None
14/07 PM 4.9/ 5.4 1.3/ 1.8 1.1/ 1.6 7 Minor
&&
$$
RIZ006>008-121900-
/O.CON.KBOX.CF.Y.0007.251012T1500Z-251012T1900Z/
Washington RI-Newport RI-Block Island RI-
321 AM EDT Sun Oct 12 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 3 PM EDT THIS AFTERNOON...
* WHAT...Up to one foot of inundation above ground level expected
in low-lying areas near shorelines and tidal waterways (4.7 to
5.5 feet Mean Lower Low Water).
* WHERE...Washington and Newport Counties, including Block Island.
* WHEN...From 11 AM this morning to 3 PM EDT this afternoon.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...Mainly the ocean exposed coastline of Rhode
Island will be impacted with minor inundation at high tide.
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.
Westerly RI at Watch Hill
MLLW Categories - Minor 5.0 ft, Moderate 8.0 ft, Major 9.5 ft
MHHW Categories - Minor 2.0 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
-------- --------- --------- --------- ------- --------
12/02 PM 4.7/ 5.2 1.7/ 2.2 1.6/ 2.0 5-6 None
13/03 AM 5.0/ 5.5 2.0/ 2.5 2.7/ 3.2 9 Minor
13/02 PM 4.9/ 5.4 1.9/ 2.3 2.1/ 2.6 9-10 Minor
14/02 AM 3.7/ 4.2 0.7/ 1.1 1.8/ 2.2 7-8 None
14/03 PM 3.9/ 4.4 0.9/ 1.4 1.3/ 1.8 5 None
Newport Harbor
MLLW Categories - Minor 6.0 ft, Moderate 7.5 ft, Major 9.0 ft
MHHW Categories - Minor 2.1 ft, Moderate 3.6 ft, Major 5.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
12/01 PM 5.2/ 5.7 1.4/ 1.9 1.2/ 1.7 3 None
13/01 AM 5.6/ 6.1 1.7/ 2.2 2.1/ 2.6 3 None
13/02 PM 5.6/ 6.1 1.7/ 2.2 1.7/ 2.2 3 None
14/02 AM 4.6/ 5.1 0.7/ 1.1 1.2/ 1.7 3 None
14/03 PM 4.6/ 5.1 0.7/ 1.1 0.9/ 1.4 3 None
Newport South Coast Beaches
MLLW Categories - Minor 6.0 ft, Moderate 7.5 ft, Major 9.0 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
-------- --------- --------- --------- ------- --------
12/01 PM 5.0/ 5.5 1.5/ 2.0 1.2/ 1.7 5-6 None
13/01 AM 5.2/ 5.7 1.8/ 2.2 2.1/ 2.6 8-9 None
13/02 PM 5.2/ 5.7 1.8/ 2.2 1.7/ 2.2 8 None
14/02 AM 4.2/ 4.7 0.8/ 1.3 1.2/ 1.7 6-7 None
14/02 PM 4.2/ 4.7 0.8/ 1.3 1.0/ 1.5 5 None
Block Island at Old Harbor
MLLW Categories - Minor 6.0 ft, Moderate 7.5 ft, Major 9.0 ft
MHHW Categories - Minor 2.8 ft, Moderate 4.3 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
12/12 PM 4.6/ 5.1 1.4/ 1.9 1.2/ 1.7 8-10 None
13/01 AM 4.9/ 5.4 1.7/ 2.2 2.2/ 2.7 14-15 None
13/01 PM 5.2/ 5.7 2.0/ 2.5 2.1/ 2.6 14 None
14/02 AM 4.2/ 4.7 1.0/ 1.5 1.5/ 2.0 11-12 None
14/02 PM 4.0/ 4.5 0.9/ 1.4 1.2/ 1.7 8-9 None
&&
$$
Source: BOX continues Coastal Flood Advisory (Barnstable, Dukes, Eastern Essex, Eastern Norfolk, Eastern Plymouth, Nantucket, Suffolk [MA] and Block Island, Newport, Washington [RI]) . (https://mesonet.agron.iastate.edu/vtec/f/2025-O-CON-KBOX-CF-Y-0007_2025-10-12T18:00Z)
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