Coastal Flood Warnings/Watches/Statements
Issued by NWS Boston, MA
Issued by NWS Boston, MA
103
WHUS41 KBOX 061802
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
202 PM EDT Sun Sep 6 2026
MAZ022>024-070000-
/O.CON.KBOX.CF.Y.0007.260906T1900Z-260907T0000Z/
/O.CON.KBOX.RP.S.0012.000000T0000Z-260907T0000Z/
Barnstable MA-Dukes MA-Nantucket MA-
202 PM EDT Sun Sep 6 2026
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...For the High Rip Current Risk, dangerous rip currents.
For the Coastal Flood Advisory, up to one-half foot of
inundation above ground level expected in low- lying areas
near shorelines and tidal waterways (2.9 to 11.1 feet
Mean Lower Low Water).
* WHERE...Barnstable MA, Dukes MA and Nantucket MA Counties.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Rip currents can sweep even
the best swimmers away from shore into deeper water.
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.
Swim near a lifeguard. If caught in a rip current, relax and
float. Don`t swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
&&
&&
Time of high total tides are approximate to the nearest hour.
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
-------- --------- --------- --------- ------- --------
06/05 PM 3.2/ 3.7 1.3/ 1.8 0.8/ 1.3 1 None
07/05 AM 2.2/ 2.7 0.2/ 0.7 0.4/ 0.9 1-2 None
07/06 PM 2.8/ 3.4 0.9/ 1.4 0.4/ 0.9 1 None
08/06 AM 2.0/ 2.5 0.0/ 0.5 0.0/ 0.5 1 None
08/07 PM 2.7/ 3.2 0.8/ 1.3 0.2/ 0.7 1 None
09/07 AM 2.3/ 2.8 0.4/ 0.9 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/08 PM 6.2/ 6.7 1.0/ 1.5 0.6/ 1.1 3 None
07/09 AM 4.7/ 5.2 -0.6/-0.1 0.2/ 0.8 2-3 None
07/09 PM 5.7/ 6.2 0.6/ 1.1 0.2/ 0.7 2 None
08/10 AM 4.9/ 5.4 -0.3/ 0.2 0.2/ 0.7 2 None
08/10 PM 6.0/ 6.5 0.8/ 1.3 0.2/ 0.8 1 None
09/11 AM 5.2/ 5.7 0.1/ 0.6 0.2/ 0.7 1-2 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
-------- --------- --------- --------- ------- --------
06/08 PM 5.4/ 5.9 0.9/ 1.4 0.7/ 1.1 2-3 None
07/10 AM 3.9/ 4.4 -0.7/-0.2 0.2/ 0.8 2 None
07/09 PM 5.0/ 5.5 0.5/ 1.0 0.2/ 0.8 2 None
08/10 AM 3.9/ 4.4 -0.7/-0.2 0.2/ 0.7 1-2 None
08/11 PM 5.1/ 5.6 0.6/ 1.1 0.2/ 0.8 1 None
09/11 AM 4.0/ 4.5 -0.5/ 0.0 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/08 PM 4.9/ 5.4 1.1/ 1.6 0.7/ 1.1 1 Minor
07/09 AM 3.2/ 3.7 -0.6/-0.1 0.2/ 0.8 1 None
07/09 PM 4.5/ 5.0 0.7/ 1.1 0.2/ 0.8 1 None
08/11 AM 3.4/ 3.9 -0.5/ 0.0 0.2/ 0.7 1 None
08/10 PM 4.5/ 5.0 0.7/ 1.1 0.2/ 0.8 1 None
09/11 AM 3.7/ 4.2 -0.2/ 0.3 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/08 PM 10.7/11.2 0.6/ 1.1 0.6/ 1.1 3 None
07/08 AM 8.9/ 9.4 -1.3/-0.8 0.2/ 0.8 2 None
07/09 PM 10.4/10.9 0.2/ 0.8 0.2/ 0.7 2 None
08/09 AM 9.1/ 9.6 -1.1/-0.6 0.2/ 0.7 1-2 None
08/10 PM 10.6/11.1 0.5/ 1.0 0.2/ 0.7 1 None
09/10 AM 9.7/10.2 -0.5/ 0.0 0.2/ 0.8 1 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
-------- --------- --------- --------- ------- --------
06/08 PM 11.2/11.7 0.7/ 1.1 0.6/ 1.1 2 None
07/08 AM 9.5/10.0 -1.1/-0.6 0.4/ 0.9 2 None
07/09 PM 11.1/11.6 0.6/ 1.1 0.2/ 0.7 1 None
08/09 AM 9.8/10.3 -0.8/-0.2 0.2/ 0.8 1 None
08/10 PM 11.3/11.8 0.8/ 1.3 0.2/ 0.7 1 None
09/10 AM 10.4/10.9 -0.2/ 0.3 0.2/ 0.8 1 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
-------- --------- --------- --------- ------- --------
06/07 PM 9.5/10.0 -0.9/-0.4 0.7/ 1.1 1 None
07/08 AM 7.8/ 8.4 -2.5/-2.0 0.4/ 0.9 2 None
07/09 PM 9.3/ 9.8 -1.1/-0.6 0.2/ 0.7 1 None
08/09 AM 8.2/ 8.7 -2.2/-1.7 0.2/ 0.8 1 None
08/10 PM 9.5/10.0 -0.9/-0.4 0.2/ 0.7 1 None
09/10 AM 8.7/ 9.2 -1.7/-1.2 0.2/ 0.8 1 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
-------- --------- --------- --------- ------- --------
06/05 PM 5.2/ 5.7 0.8/ 1.3 0.9/ 1.4 1 None
07/05 AM 4.0/ 4.5 -0.5/ 0.0 0.4/ 0.9 1 None
07/06 PM 4.9/ 5.4 0.5/ 1.0 0.5/ 1.0 1 None
08/07 AM 4.0/ 4.5 -0.5/ 0.0 0.1/ 0.6 1 None
08/07 PM 4.7/ 5.2 0.4/ 0.9 0.2/ 0.7 1 None
09/07 AM 4.5/ 5.0 0.1/ 0.6 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/08 PM 3.5/ 4.0 0.8/ 1.3 0.7/ 1.1 1 None
07/09 AM 2.2/ 2.7 -0.5/ 0.0 0.2/ 0.8 1-2 None
07/09 PM 3.2/ 3.7 0.5/ 1.0 0.2/ 0.8 1 None
08/10 AM 2.2/ 2.7 -0.6/-0.1 0.1/ 0.6 1 None
08/10 PM 3.1/ 3.6 0.4/ 0.9 0.2/ 0.7 1 None
09/11 AM 2.3/ 2.8 -0.3/ 0.2 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/07 PM 2.7/ 3.2 0.7/ 1.1 0.7/ 1.1 1 None
07/08 AM 1.9/ 2.3 -0.2/ 0.3 0.2/ 0.8 1 None
07/08 PM 2.2/ 2.7 0.2/ 0.8 0.4/ 0.9 1 None
08/09 AM 1.8/ 2.2 -0.2/ 0.2 0.1/ 0.6 1 None
08/10 PM 2.2/ 2.7 0.2/ 0.8 0.2/ 0.7 1 None
09/11 AM 2.1/ 2.6 0.1/ 0.6 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
06/09 PM 4.7/ 5.2 1.1/ 1.6 0.7/ 1.1 2-3 None
07/09 AM 3.2/ 3.7 -0.5/ 0.0 0.2/ 0.8 2-3 None
07/10 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.7 2 None
08/10 AM 3.2/ 3.7 -0.5/ 0.0 0.2/ 0.7 2 None
08/11 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.7 1 None
09/11 AM 3.4/ 3.9 -0.2/ 0.2 0.2/ 0.7 1-2 None
&&
$$
MAZ007-014>016-019-070000-
/O.CON.KBOX.RP.S.0012.000000T0000Z-260907T0000Z/
Eastern Essex MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Eastern Plymouth MA-
202 PM EDT Sun Sep 6 2026
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...Dangerous rip currents.
* WHERE...Eastern Essex MA, Southeast Middlesex MA, Suffolk MA,
Eastern Norfolk MA and Eastern Plymouth MA Counties.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Rip currents can sweep even the best swimmers away
from shore into deeper water.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Swim near a lifeguard. If caught in a rip current, relax and
float. Don`t swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
&&
$$