Coastal Flood Warnings/Watches/Statements
Issued by NWS Boston, MA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11
000
WHUS41 KBOX 191404
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
1004 AM EDT Mon Oct 19 2020

MAZ007-015-016-019-022>024-191900-
/O.CON.KBOX.CF.S.0011.201019T1600Z-201019T1900Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
1004 AM EDT Mon Oct 19 2020

* WHAT...Up to one foot of inundation above ground level
  expected in low-lying areas near shorelines and tidal
  waterways (2.7 to 13.6 feet Mean Lower Low Water).

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

* WHEN...Today from noon to 3 PM EDT.

* 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.

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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM   9.6/10.1   0.1/ 0.6  -0.7/-0.2     1       None
 20/03 AM   8.4/ 8.9  -1.1/-0.7  -0.7/-0.2     1       None
 20/03 PM   9.4/ 9.9  -0.2/ 0.3  -0.7/-0.2     1       None
 21/03 AM   8.0/ 8.5  -1.6/-1.1  -0.7/-0.2     1       None
 21/04 PM   9.1/ 9.6  -0.5/ 0.0  -0.7/-0.2     1       None

Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  11.1/11.6   1.6/ 2.0  -0.3/ 0.2     3      Minor
 20/02 AM  10.0/10.5   0.5/ 1.0  -0.2/ 0.2     4       None
 20/03 PM  10.9/11.4   1.4/ 1.9  -0.2/ 0.2     4       None
 21/03 AM   9.4/ 9.9  -0.2/ 0.3  -0.3/ 0.2    3-4      None
 21/03 PM  10.4/10.9   0.9/ 1.4  -0.2/ 0.2     4       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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  11.8/12.3   1.9/ 2.3  -0.2/ 0.3     1       None
 20/02 AM  10.5/11.0   0.6/ 1.1  -0.2/ 0.3     1       None
 20/03 PM  11.6/12.1   1.7/ 2.2   0.0/ 0.5    1-2      None
 21/03 AM   9.9/10.4   0.0/ 0.5  -0.2/ 0.3     1       None
 21/03 PM  11.0/11.5   1.1/ 1.6  -0.2/ 0.3     1       None

Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  11.8/12.3   1.7/ 2.2  -0.2/ 0.3     1       None
 20/02 AM  10.6/11.1   0.5/ 1.0  -0.2/ 0.3     1       None
 20/03 PM  11.5/12.0   1.4/ 1.9  -0.2/ 0.3    1-2      None
 21/03 AM  10.0/10.5  -0.2/ 0.3  -0.2/ 0.3     1       None
 21/03 PM  11.0/11.5   0.9/ 1.4  -0.2/ 0.3    1-2      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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  11.6/12.1   1.9/ 2.3   0.1/ 0.6     3      Minor
 20/02 AM  10.2/10.7   0.5/ 1.0   0.1/ 0.6     3       None
 20/03 PM  11.3/11.8   1.6/ 2.0   0.1/ 0.6     3      Minor
 21/03 AM   9.8/10.3   0.1/ 0.6   0.1/ 0.6     3       None
 21/03 PM  10.9/11.4   1.2/ 1.7   0.1/ 0.6     3       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
 --------  ---------  ---------  ---------  -------  --------

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
 --------  ---------  ---------  ---------  -------  --------
 19/10 AM   6.0/ 6.5   1.6/ 2.0   0.6/ 1.1     1       None
 19/11 PM   5.2/ 5.7   0.8/ 1.3   0.6/ 1.1     1       None
 20/11 AM   5.7/ 6.2   1.3/ 1.8   0.6/ 1.1     1       None
 21/12 AM   4.7/ 5.2   0.4/ 0.9   0.5/ 1.0     1       None
 21/12 PM   5.4/ 5.9   1.0/ 1.5   0.6/ 1.1     1       None
 22/01 AM   4.5/ 5.0   0.1/ 0.6   0.5/ 1.0     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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  12.7/13.2   2.6/ 3.1   0.8/ 1.3     2      Minor
 20/02 AM  11.5/12.0   1.4/ 1.9   0.9/ 1.4     2       None
 20/03 PM  12.5/13.0   2.3/ 2.8   0.9/ 1.4     2       None
 21/03 AM  10.9/11.4   0.8/ 1.3   0.8/ 1.3    2-3      None
 21/04 PM  12.0/12.5   1.9/ 2.3   0.9/ 1.4     3       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
 --------  ---------  ---------  ---------  -------  --------
 19/11 AM   3.7/ 4.2   1.8/ 2.2   0.5/ 1.0     1       None
 19/11 PM   3.0/ 3.5   1.0/ 1.5   0.4/ 0.9     1       None
 20/11 AM   3.5/ 4.0   1.5/ 2.0   0.5/ 1.0     1       None
 21/12 AM   2.7/ 3.2   0.8/ 1.3   0.4/ 0.9     1       None
 21/12 PM   3.2/ 3.7   1.2/ 1.7   0.4/ 0.9     1       None
 22/01 AM   2.7/ 3.2   0.7/ 1.1   0.4/ 0.9     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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  13.4/13.9   2.8/ 3.4   0.9/ 1.4     2      Minor
 20/02 AM  12.2/12.7   1.7/ 2.2   1.0/ 1.5     1       None
 20/03 PM  13.3/13.8   2.7/ 3.2   1.0/ 1.5     1      Minor
 21/03 AM  11.6/12.1   1.1/ 1.6   0.9/ 1.4    1-2      None
 21/04 PM  12.7/13.2   2.2/ 2.7   1.0/ 1.5     2      Minor

Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 19/03 PM   6.6/ 7.1  -1.1/-0.7   0.6/ 1.1     3       None
 20/03 AM   5.7/ 6.2  -2.0/-1.5   0.7/ 1.1     3       None
 20/03 PM   6.6/ 7.1  -1.1/-0.7   0.7/ 1.1     3       None
 21/04 AM   5.5/ 6.0  -2.2/-1.8   0.6/ 1.1     3       None
 21/04 PM   6.4/ 6.9  -1.4/-0.9   0.7/ 1.1     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
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM  11.8/12.3   1.5/ 2.0   1.1/ 1.6     1      Minor
 20/02 AM  10.7/11.2   0.4/ 0.9   1.2/ 1.7     1       None
 20/03 PM  11.5/12.0   1.2/ 1.7   1.1/ 1.6     1       None
 21/03 AM  10.1/10.6  -0.2/ 0.2   1.1/ 1.6     2       None
 21/04 PM  11.0/11.5   0.7/ 1.1   1.1/ 1.6     2       None

Vineyard Haven
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 3.0 ft, Moderate 4.5 ft, Major 6.5 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 19/02 PM   2.5/ 3.0   0.5/ 1.0   0.2/ 0.8     1       None
 20/02 AM   2.1/ 2.6   0.1/ 0.6   0.2/ 0.8     1       None
 20/03 PM   2.3/ 2.8   0.4/ 0.9   0.2/ 0.8     1       None
 21/03 AM   2.0/ 2.5   0.0/ 0.5   0.2/ 0.8     1       None
 21/04 PM   2.2/ 2.7   0.2/ 0.7   0.2/ 0.8     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
 --------  ---------  ---------  ---------  -------  --------
 19/03 PM   4.6/ 5.1   1.0/ 1.5   0.6/ 1.1     2      Minor
 20/03 AM   3.9/ 4.4   0.2/ 0.8   0.7/ 1.1     2       None
 20/04 PM   4.6/ 5.1   1.0/ 1.5   0.6/ 1.1     2      Minor
 21/04 AM   3.5/ 4.0  -0.2/ 0.3   0.5/ 1.0     2       None
 21/04 PM   4.4/ 4.9   0.8/ 1.3   0.6/ 1.1     2       None

&&

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.