419
WHUS41 KBOX 160604
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
204 AM EDT Thu Oct 16 2025

MAZ023-024-161915-
/O.NEW.KBOX.CF.S.0005.251017T0000Z-251017T0400Z/
Dukes MA-Nantucket MA-
204 AM EDT Thu Oct 16 2025

...COASTAL FLOOD STATEMENT IN EFFECT THIS EVENING...

* WHAT...Up to one half foot of inundation above ground level
  expected in low-lying areas near shorelines and tidal
  waterways (3.0 to 5.0 feet Mean Lower Low Water).

* WHERE...Dukes MA and Nantucket MA Counties.

* WHEN...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...

Do not drive through flooded roadways.

&&

&&

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

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
 --------  ---------  ---------  ---------  -------  --------
 16/09 AM   3.1/ 3.6   0.4/ 0.9   0.8/ 1.3     3       None
 16/09 PM   3.6/ 4.1   0.9/ 1.4   1.0/ 1.5    3-4      None
 17/09 AM   3.9/ 4.4   1.2/ 1.7   1.5/ 2.0    3-4     Minor
 17/10 PM   4.0/ 4.5   1.3/ 1.8   1.5/ 2.0    2-3     Minor
 18/10 AM   3.7/ 4.2   1.0/ 1.5   1.2/ 1.7     3       None
 18/10 PM   3.2/ 3.7   0.5/ 1.0   0.9/ 1.4     2       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
 --------  ---------  ---------  ---------  -------  --------
 16/08 AM   2.5/ 3.0   0.5/ 1.0   0.8/ 1.3     3       None
 16/09 PM   2.7/ 3.2   0.8/ 1.3   1.0/ 1.5     3       None
 17/09 AM   3.2/ 3.7   1.3/ 1.8   1.5/ 2.0     3       None
 17/09 PM   3.2/ 3.7   1.2/ 1.7   1.4/ 1.9     2       None
 18/10 AM   3.1/ 3.6   1.1/ 1.6   1.2/ 1.7     2       None
 18/10 PM   2.7/ 3.2   0.7/ 1.1   1.0/ 1.5    1-2      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
 --------  ---------  ---------  ---------  -------  --------
 16/09 AM   4.0/ 4.5   0.4/ 0.9   0.9/ 1.4     5       None
 16/10 PM   4.7/ 5.2   1.2/ 1.7   1.3/ 1.8    5-6     Minor
 17/10 AM   4.7/ 5.2   1.2/ 1.7   1.6/ 2.0     6      Minor
 17/10 PM   4.7/ 5.2   1.2/ 1.7   1.4/ 1.9     5      Minor
 18/11 AM   4.5/ 5.0   0.9/ 1.4   1.2/ 1.7     5       None
 18/11 PM   4.0/ 4.5   0.5/ 1.0   0.9/ 1.4     4       None

&&

$$