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Marine Coastal Hazard Message - Issued When Needed
Check the date
Expires:202606170800;Remove:202606170800;881194
WHUS41 KBOX 170627
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
227 AM EDT Wed Jun 17 2026
MAZ007-015-016-019-022>024-170800-
/O.CON.KBOX.CF.S.0004.000000T0000Z-260617T0800Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
227 AM EDT Wed Jun 17 2026
...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 4 AM EDT EARLY
THIS MORNING...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways (2.2 to
12.4 feet Mean Lower Low Water).
* WHERE...Eastern Essex, Suffolk, Eastern Norfolk,
Eastern Plymouth, Barnstable, Dukes and Nantucket
Counties.
* WHEN...Until 4 AM EDT early this morning.
* IMPACTS...Some water on low lying roads and property.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
&&
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
-------- --------- --------- --------- ------- --------
17/02 PM 9.9/10.4 0.2/ 0.8 0.5/ 1.0 1-2 None
18/02 AM 11.6/12.1 2.0/ 2.5 0.4/ 0.9 2 Minor
18/03 PM 10.1/10.6 0.5/ 1.0 0.6/ 1.1 3-4 None
19/03 AM 11.1/11.6 1.5/ 2.0 0.2/ 0.8 3 None
19/04 PM 9.7/10.2 0.1/ 0.6 0.2/ 0.8 2 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
-------- --------- --------- --------- ------- --------
17/02 PM 8.9/ 9.4 -0.7/-0.2 0.5/ 1.0 1-2 None
18/02 AM 10.3/10.8 0.8/ 1.3 0.4/ 0.9 1-2 None
18/03 PM 9.1/ 9.6 -0.5/ 0.0 0.6/ 1.1 3 None
19/03 AM 9.9/10.4 0.4/ 0.9 0.2/ 0.8 2 None
19/04 PM 8.8/ 9.3 -0.8/-0.2 0.2/ 0.8 2-3 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
-------- --------- --------- --------- ------- --------
17/02 PM 10.7/11.2 0.4/ 0.9 0.6/ 1.1 1-2 None
18/02 AM 12.0/12.5 1.7/ 2.2 0.4/ 0.9 1 None
18/03 PM 10.6/11.1 0.2/ 0.8 0.5/ 1.0 2 None
19/03 AM 11.4/11.9 1.1/ 1.6 0.2/ 0.7 2 None
19/04 PM 10.2/10.7 -0.2/ 0.3 0.2/ 0.7 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
-------- --------- --------- --------- ------- --------
17/02 PM 10.4/10.9 0.5/ 1.0 0.6/ 1.1 1-2 None
18/02 AM 11.7/12.2 1.8/ 2.2 0.2/ 0.8 1 None
18/03 PM 10.4/10.9 0.5/ 1.0 0.6/ 1.1 2 None
19/03 AM 11.1/11.6 1.2/ 1.7 0.2/ 0.7 1-2 None
19/04 PM 10.0/10.5 0.1/ 0.6 0.2/ 0.8 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
-------- --------- --------- --------- ------- --------
17/02 AM 11.4/11.9 1.5/ 2.0 0.2/ 0.8 1 Minor
17/02 PM 10.2/10.7 0.2/ 0.8 0.5/ 1.0 1-2 None
18/02 AM 11.7/12.2 1.8/ 2.2 0.2/ 0.8 1 Minor
18/03 PM 10.1/10.6 0.2/ 0.7 0.4/ 0.9 3 None
19/03 AM 11.2/11.7 1.3/ 1.8 0.2/ 0.7 2 None
19/04 PM 10.0/10.5 0.1/ 0.6 0.2/ 0.8 2 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
-------- --------- --------- --------- ------- --------
17/02 PM 10.0/10.5 0.2/ 0.8 0.5/ 1.0 1-2 None
18/02 AM 11.5/12.0 1.8/ 2.2 0.4/ 0.9 1 Minor
18/03 PM 10.0/10.5 0.2/ 0.8 0.5/ 1.0 3 None
19/03 AM 11.0/11.5 1.3/ 1.8 0.2/ 0.7 2 None
19/04 PM 9.8/10.3 0.1/ 0.6 0.2/ 0.8 2 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
-------- --------- --------- --------- ------- --------
17/10 AM 2.2/ 2.7 0.2/ 0.8 0.4/ 0.9 1 None
17/11 PM 3.2/ 3.7 1.3/ 1.8 0.5/ 1.0 1-2 None
18/12 PM 2.7/ 3.2 0.8/ 1.3 0.9/ 1.4 2-4 None
19/12 AM 2.7/ 3.2 0.8/ 1.3 0.2/ 0.8 3-4 None
19/12 PM 2.2/ 2.7 0.2/ 0.8 0.4/ 0.9 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
-------- --------- --------- --------- ------- --------
17/02 AM 7.2/ 7.7 2.0/ 2.5 0.7/ 1.1 2 None
17/02 PM 5.4/ 5.9 0.2/ 0.7 0.5/ 1.0 2 None
18/03 AM 6.6/ 7.1 1.4/ 1.9 0.2/ 0.8 2 None
18/04 PM 5.5/ 6.0 0.2/ 0.8 0.5/ 1.0 3-5 None
19/04 AM 6.4/ 6.9 1.2/ 1.7 0.2/ 0.8 3-4 None
19/04 PM 5.2/ 5.7 0.0/ 0.5 0.2/ 0.7 3-4 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
-------- --------- --------- --------- ------- --------
17/02 AM 5.7/ 6.2 1.3/ 1.8 0.6/ 1.1 2 None
17/02 PM 4.2/ 4.7 -0.2/ 0.2 0.5/ 1.0 2 None
18/03 AM 5.6/ 6.1 1.1/ 1.6 0.5/ 1.0 1-2 None
18/04 PM 4.7/ 5.2 0.2/ 0.8 0.9/ 1.4 3-4 None
19/04 AM 5.2/ 5.7 0.7/ 1.1 0.2/ 0.8 3 None
19/05 PM 4.4/ 4.9 -0.2/ 0.3 0.4/ 0.9 3 None
Hyannis Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 1.2 ft, Moderate 2.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
17/02 AM 5.2/ 5.7 1.4/ 1.9 0.5/ 1.0 1 Minor
17/03 PM 3.9/ 4.4 0.1/ 0.6 0.5/ 1.0 1 None
18/03 AM 5.1/ 5.6 1.3/ 1.8 0.5/ 1.0 1 Minor
18/03 PM 4.4/ 4.9 0.6/ 1.1 1.1/ 1.6 3 None
19/04 AM 4.6/ 5.1 0.8/ 1.3 0.2/ 0.8 2 None
19/04 PM 3.7/ 4.2 0.0/ 0.5 0.4/ 0.9 3 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
-------- --------- --------- --------- ------- --------
17/02 PM 10.4/10.9 0.2/ 0.8 0.5/ 1.0 1 None
18/02 AM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 1 None
18/03 PM 10.3/10.8 0.2/ 0.7 0.4/ 0.9 3-4 None
19/03 AM 11.2/11.7 1.1/ 1.6 0.2/ 0.7 2-3 None
19/04 PM 10.1/10.6 0.0/ 0.5 0.2/ 0.8 2 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
-------- --------- --------- --------- ------- --------
17/02 PM 11.1/11.6 0.6/ 1.1 0.5/ 1.0 1 None
18/02 AM 12.5/13.0 2.0/ 2.5 0.2/ 0.8 1 None
18/03 PM 10.8/11.3 0.2/ 0.8 0.2/ 0.8 3 None
19/03 AM 12.1/12.6 1.6/ 2.0 0.2/ 0.8 2 None
19/04 PM 10.8/11.3 0.2/ 0.8 0.2/ 0.8 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
-------- --------- --------- --------- ------- --------
17/02 AM 10.3/10.8 0.0/ 0.5 0.4/ 0.9 1 None
17/02 PM 9.3/ 9.8 -1.1/-0.6 0.5/ 1.0 1-2 None
18/02 AM 10.6/11.1 0.2/ 0.8 0.4/ 0.9 1 None
18/03 PM 9.0/ 9.5 -1.4/-0.9 0.2/ 0.8 3 None
19/03 AM 10.2/10.7 -0.2/ 0.3 0.2/ 0.8 1-2 None
19/04 PM 8.9/ 9.4 -1.5/-1.0 0.2/ 0.8 3 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
-------- --------- --------- --------- ------- --------
17/11 AM 4.7/ 5.2 0.4/ 0.9 0.5/ 1.0 1 None
17/11 PM 5.4/ 5.9 1.0/ 1.5 0.6/ 1.1 1 None
18/12 PM 5.4/ 5.9 1.0/ 1.5 1.2/ 1.7 2-3 None
19/12 AM 5.0/ 5.5 0.6/ 1.1 0.5/ 1.0 1-3 None
19/01 PM 4.7/ 5.2 0.4/ 0.9 0.6/ 1.1 2-3 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
-------- --------- --------- --------- ------- --------
17/02 AM 3.7/ 4.2 1.0/ 1.5 0.6/ 1.1 2 None
17/02 PM 2.5/ 3.0 -0.2/ 0.2 0.5/ 1.0 2 None
18/03 AM 3.5/ 4.0 0.8/ 1.3 0.5/ 1.0 2 None
18/03 PM 3.0/ 3.5 0.2/ 0.8 0.9/ 1.4 3-5 None
19/03 AM 3.0/ 3.5 0.2/ 0.8 0.2/ 0.7 3-4 None
19/04 PM 2.6/ 3.1 -0.2/ 0.3 0.2/ 0.8 4 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
-------- --------- --------- --------- ------- --------
17/02 AM 3.0/ 3.5 1.0/ 1.5 0.7/ 1.1 2 None
17/02 PM 2.2/ 2.7 0.2/ 0.8 0.5/ 1.0 1 None
18/02 AM 2.7/ 3.2 0.7/ 1.1 0.5/ 1.0 1-2 None
18/03 PM 2.8/ 3.4 0.9/ 1.4 1.0/ 1.5 3-4 None
19/03 AM 2.2/ 2.7 0.2/ 0.7 0.2/ 0.7 3 None
19/04 PM 2.2/ 2.7 0.2/ 0.7 0.4/ 0.9 3-4 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
-------- --------- --------- --------- ------- --------
17/02 AM 4.9/ 5.4 1.3/ 1.8 0.6/ 1.1 2 Minor
17/03 PM 3.5/ 4.0 -0.2/ 0.3 0.5/ 1.0 2 None
18/03 AM 4.7/ 5.2 1.1/ 1.6 0.5/ 1.0 2 None
18/04 PM 3.7/ 4.2 0.1/ 0.6 0.6/ 1.1 4-5 None
19/04 AM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.7 4-5 None
19/05 PM 3.5/ 4.0 -0.2/ 0.3 0.2/ 0.8 4-5 None
&&
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