Alert archive / Massachusetts / Coastal Flood Statements in 2021

Coastal Flood Statement 10, NWS Boston/Norton, MA

October 11, 20216 counties in Massachusetts

NWS Boston/Norton, MA issued this coastal flood statement at Oct 11, 2021, 3:43 AM EDT for 6 counties in Massachusetts. It took effect at Oct 11, 2021, 1:00 PM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Oct 11, 2021, 3:43 AM EDT (07:43 UTC)
In effect from: Oct 11, 2021, 1:00 PM EDT
Expired: Oct 11, 2021, 6:00 PM EDT
In force: 5 hr
Issued by: NWS Boston/Norton, MA

Counties Barnstable County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 07:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 7.7 hours before the alert went out and 211 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

425 
WHUS41 KBOX 110743
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
343 AM EDT Mon Oct 11 2021

MAZ007-019-022-024-112045-
/O.NEW.KBOX.RP.S.0010.211011T1200Z-211012T0000Z/
/O.NEW.KBOX.CF.S.0010.211011T1700Z-211011T2200Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
343 AM EDT Mon Oct 11 2021

...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS EVENING...
...COASTAL FLOOD STATEMENT IN EFFECT FROM 1 PM EDT THIS AFTERNOON
THROUGH 5 PM EDT THIS AFTERNOON...

* WHAT...For the High Rip Current Risk, dangerous rip currents 
  expected. For the Coastal Flood Statement, up to one half foot of 
  inundation above ground level expected in low- lying areas near 
  shorelines and tidal waterways (3.6 to 12.3 feet Mean Lower Low 
  Water).

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

* WHEN...For the High Rip Current Risk, from 8 AM EDT this 
  morning through this evening. For the Coastal Flood Statement, 
  from 1 PM EDT this afternoon through this afternoon.

* IMPACTS...Some water on low lying roads and property. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

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.

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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 AM   8.8/ 9.3  -0.8/-0.2   0.4/ 0.9     3       None    
 11/04 PM  10.0/10.5   0.5/ 1.0   0.4/ 0.9     3       None    
 12/05 AM   8.4/ 8.9  -1.1/-0.7   0.2/ 0.8    1-3      None    
 12/05 PM   9.6/10.1   0.1/ 0.6   0.2/ 0.8     2       None    
 13/06 AM   8.2/ 8.7  -1.4/-0.9   0.4/ 0.9     2       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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM   9.9/10.4   0.4/ 0.9   0.4/ 0.9    3-4      None    
 11/04 PM  10.9/11.4   1.4/ 1.9   0.4/ 0.9     3       None    
 12/04 AM   9.5/10.0   0.0/ 0.5   0.4/ 0.9    3-4      None    
 12/05 PM  10.4/10.9   0.9/ 1.4   0.2/ 0.8    2-3      None    
 13/06 AM   9.1/ 9.6  -0.5/ 0.0   0.4/ 0.9     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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM  10.0/10.5   0.2/ 0.8   0.5/ 1.0     3       None    
 11/04 PM  11.2/11.7   1.5/ 2.0   0.5/ 1.0     2      Minor    
 12/04 AM   9.6/10.1  -0.2/ 0.3   0.5/ 1.0     2       None    
 12/05 PM  10.7/11.2   1.0/ 1.5   0.4/ 0.9     2       None    
 13/05 AM   9.3/ 9.8  -0.5/ 0.0   0.5/ 1.0     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 
 --------  ---------  ---------  ---------  -------  --------
 10/04 PM   5.2/ 5.7   0.8/ 1.3   0.2/ 0.8     2       None    
 11/04 AM   4.2/ 4.7  -0.2/ 0.2   0.5/ 1.0     2       None    
 11/05 PM   5.2/ 5.7   0.8/ 1.3   0.4/ 0.9     2       None    
 12/05 AM   4.0/ 4.5  -0.5/ 0.0   0.4/ 0.9    2-3      None    
 12/06 PM   5.1/ 5.6   0.6/ 1.1   0.2/ 0.8     2       None    
 13/07 AM   4.0/ 4.5  -0.5/ 0.0   0.4/ 0.9     2       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 
 --------  ---------  ---------  ---------  -------  --------
 11/12 AM   4.7/ 5.2   0.4/ 0.9   0.7/ 1.1     1       None    
 11/01 PM   5.2/ 5.7   0.9/ 1.4   0.6/ 1.1     1       None    
 12/01 AM   4.5/ 5.0   0.1/ 0.6   0.6/ 1.1     1       None    
 12/02 PM   4.9/ 5.4   0.5/ 1.0   0.4/ 0.9     1       None    
 13/02 AM   4.2/ 4.7  -0.2/ 0.2   0.4/ 0.9     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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 AM  10.3/10.8   0.2/ 0.7   0.2/ 0.8     1       None    
 11/04 PM  11.5/12.0   1.4/ 1.9   0.4/ 0.9     1       None    
 12/05 AM   9.8/10.3  -0.3/ 0.2   0.2/ 0.8    1-3      None    
 12/05 PM  11.0/11.5   0.9/ 1.4   0.2/ 0.8     2       None    
 13/06 AM   9.6/10.1  -0.6/-0.1   0.4/ 0.9     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 
 --------  ---------  ---------  ---------  -------  --------
 11/12 AM   3.2/ 3.7   1.2/ 1.7   0.8/ 1.3     2       None    
 11/01 PM   3.4/ 3.9   1.4/ 1.9   0.6/ 1.1    1-2      None    
 12/01 AM   2.7/ 3.2   0.8/ 1.3   0.6/ 1.1     1       None    
 12/02 PM   3.1/ 3.6   1.1/ 1.6   0.4/ 0.9    1-2      None    
 13/02 AM   2.5/ 3.0   0.5/ 1.0   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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM  10.9/11.4   0.4/ 0.9   0.5/ 1.0     1       None    
 11/04 PM  12.1/12.6   1.6/ 2.0   0.5/ 1.0     1       None    
 12/04 AM  10.5/11.0   0.0/ 0.5   0.5/ 1.0    1-2      None    
 12/05 PM  11.5/12.0   1.0/ 1.5   0.2/ 0.8     2       None    
 13/05 AM  10.1/10.6  -0.5/ 0.0   0.5/ 1.0     1       None

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 
 --------  ---------  ---------  ---------  -------  --------
 10/04 PM   6.0/ 6.5  -1.8/-1.3   0.2/ 0.7     4       None    
 11/04 AM   5.1/ 5.6  -2.7/-2.2   0.4/ 0.9     4       None    
 11/05 PM   6.1/ 6.6  -1.7/-1.2   0.4/ 0.9     4       None    
 12/05 AM   5.0/ 5.5  -2.7/-2.2   0.4/ 0.9    3-4      None    
 12/06 PM   5.7/ 6.2  -2.0/-1.5   0.2/ 0.8     3       None    
 13/06 AM   4.7/ 5.2  -3.0/-2.5   0.4/ 0.9     2       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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM   9.2/ 9.7  -1.1/-0.7   0.5/ 1.0    1-2      None    
 11/04 PM  10.3/10.8   0.0/ 0.5   0.5/ 1.0     1       None    
 12/04 AM   8.8/ 9.3  -1.6/-1.1   0.5/ 1.0    1-2      None    
 12/05 PM   9.8/10.3  -0.6/-0.1   0.2/ 0.8     1       None    
 13/05 AM   8.5/ 9.0  -1.9/-1.4   0.5/ 1.0     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 
 --------  ---------  ---------  ---------  -------  --------
 10/04 PM   4.2/ 4.7   0.7/ 1.1   0.4/ 0.9     2       None    
 11/05 AM   3.6/ 4.1   0.0/ 0.5   0.6/ 1.1    2-3      None    
 11/04 PM   4.2/ 4.7   0.6/ 1.1   0.5/ 1.0     2       None    
 12/05 AM   3.2/ 3.7  -0.5/ 0.0   0.4/ 0.9    1-3      None    
 12/06 PM   4.0/ 4.5   0.4/ 0.9   0.2/ 0.8     3       None    
 13/07 AM   3.2/ 3.7  -0.5/ 0.0   0.4/ 0.9     2       None

&&

$$

MAZ015-016-112045-
/O.NEW.KBOX.CF.S.0010.211011T1700Z-211011T2200Z/
Suffolk MA-Eastern Norfolk MA-
343 AM EDT Mon Oct 11 2021

...COASTAL FLOOD STATEMENT IN EFFECT FROM 1 PM EDT THIS AFTERNOON
THROUGH THIS AFTERNOON...

* WHAT...Up to one half foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal waterways 
  (11.9 to 12.0 feet Mean Lower Low Water).

* WHERE...Eastern Norfolk MA and Suffolk MA Counties.

* WHEN...From 1 PM EDT this afternoon through 5 PM EDT this afternoon.

* 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.

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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM  10.6/11.1   0.7/ 1.1   0.7/ 1.1     1       None    
 11/04 PM  11.8/12.3   1.9/ 2.3   0.7/ 1.1     1       None    
 12/04 AM  10.1/10.6   0.2/ 0.7   0.7/ 1.1     1       None    
 12/05 PM  11.1/11.6   1.2/ 1.7   0.5/ 1.0     1       None    
 13/05 AM   9.6/10.1  -0.3/ 0.2   0.7/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/03 AM  10.6/11.1   0.5/ 1.0   0.7/ 1.1    1-2      None    
 11/04 PM  11.7/12.2   1.6/ 2.0   0.7/ 1.1     1       None    
 12/04 AM  10.1/10.6   0.0/ 0.5   0.7/ 1.1     1       None    
 12/05 PM  11.1/11.6   1.0/ 1.5   0.5/ 1.0     1       None    
 13/06 AM   9.7/10.2  -0.5/ 0.0   0.6/ 1.1     1       None

&&

$$

MAZ023-RIZ008-112045-
/O.NEW.KBOX.RP.S.0010.211011T1200Z-211012T0000Z/
Dukes MA-Block Island RI-
343 AM EDT Mon Oct 11 2021

...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS EVENING...

* WHAT...Dangerous rip currents expected.

* WHERE...In Massachusetts, Dukes MA County. In Rhode Island, 
  Block Island RI County.

* WHEN...From 8 AM EDT this morning through 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.

&&

$$

1 follow-up statement

624 
WHUS41 KBOX 112048
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
448 PM EDT Mon Oct 11 2021

MAZ007-019-022-024-120000-
/O.CON.KBOX.CF.S.0010.000000T0000Z-211011T2200Z/
/O.CON.KBOX.RP.S.0010.000000T0000Z-211012T0000Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
448 PM EDT Mon Oct 11 2021

...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...For the High Rip Current Risk, dangerous rip currents. 
  For the Coastal Flood Statement, up to 0.5 feet of inundation
  above ground level in low-lying areas near shorelines and tidal
  waterways (1.3 to 11.0 feet Mean Lower Low Water).

* WHERE...Eastern Plymouth, Eastern Essex, Barnstable 
  and Nantucket Counties.

* WHEN...For the High Rip Current Risk, until 8 PM EDT this 
  evening. For the Coastal Flood Statement, until 6 PM EDT this 
  evening.

* IMPACTS...Some water on low lying roads and property. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

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.

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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM   9.8/10.3   0.2/ 0.8   0.2/ 0.7     1       None    
 12/05 AM   8.4/ 8.9  -1.1/-0.7   0.2/ 0.8     1       None    
 12/05 PM   9.7/10.2   0.2/ 0.7   0.4/ 0.9     1       None    
 13/06 AM   8.3/ 8.8  -1.3/-0.8   0.5/ 1.0    1-2      None    
 13/06 PM   9.5/10.0   0.0/ 0.5   0.6/ 1.1     2       None    
 14/07 AM   8.3/ 8.8  -1.3/-0.8   0.6/ 1.1    1-2      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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  10.9/11.4   1.4/ 1.9   0.4/ 0.9     3       None    
 12/04 AM   9.5/10.0   0.0/ 0.5   0.4/ 0.9     3       None    
 12/05 PM  10.5/11.0   1.0/ 1.5   0.4/ 0.9     3       None    
 13/06 AM   9.2/ 9.7  -0.3/ 0.2   0.5/ 1.0     2       None    
 13/06 PM  10.4/10.9   0.9/ 1.4   0.6/ 1.1     2       None    
 14/07 AM   9.1/ 9.6  -0.5/ 0.0   0.6/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  11.2/11.7   1.5/ 2.0   0.5/ 1.0     3      Minor    
 12/04 AM   9.6/10.1  -0.2/ 0.3   0.5/ 1.0    2-3      None    
 12/05 PM  10.8/11.3   1.1/ 1.6   0.5/ 1.0     2       None    
 13/05 AM   9.4/ 9.9  -0.3/ 0.2   0.6/ 1.1     2       None    
 13/06 PM  10.6/11.1   0.9/ 1.4   0.6/ 1.1     1       None    
 14/07 AM   9.2/ 9.7  -0.6/-0.1   0.6/ 1.1     1       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 
 --------  ---------  ---------  ---------  -------  --------
 11/05 PM   5.4/ 5.9   0.9/ 1.4   0.5/ 1.0     4       None    
 12/05 AM   4.0/ 4.5  -0.5/ 0.0   0.4/ 0.9     3       None    
 12/05 PM   5.2/ 5.7   0.7/ 1.1   0.5/ 1.0     2       None    
 13/07 AM   4.2/ 4.7  -0.3/ 0.2   0.5/ 1.0     2       None    
 13/07 PM   5.2/ 5.7   0.7/ 1.1   0.6/ 1.1     2       None    
 14/08 AM   4.2/ 4.7  -0.2/ 0.2   0.6/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 12/01 AM   4.5/ 5.0   0.1/ 0.6   0.6/ 1.1    1-2      None    
 12/02 PM   5.1/ 5.6   0.7/ 1.1   0.6/ 1.1     1       None    
 13/02 AM   4.2/ 4.7  -0.2/ 0.3   0.5/ 1.0     1       None    
 13/03 PM   5.0/ 5.5   0.6/ 1.1   0.7/ 1.1     1       None    
 14/03 AM   4.5/ 5.0   0.1/ 0.6   0.7/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  11.5/12.0   1.4/ 1.9   0.4/ 0.9     3       None    
 12/05 AM   9.9/10.4  -0.2/ 0.2   0.4/ 0.9     2       None    
 12/05 PM  11.1/11.6   1.0/ 1.5   0.4/ 0.9     2       None    
 13/06 AM   9.7/10.2  -0.5/ 0.0   0.5/ 1.0    1-2      None    
 13/06 PM  10.9/11.4   0.8/ 1.3   0.6/ 1.1     1       None    
 14/07 AM   9.6/10.1  -0.6/-0.1   0.6/ 1.1     1       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 AM   2.7/ 3.2   0.8/ 1.3   0.6/ 1.1     2       None    
 12/02 PM   3.2/ 3.7   1.2/ 1.7   0.5/ 1.0     2       None    
 13/02 AM   2.7/ 3.2   0.7/ 1.1   0.5/ 1.0     1       None    
 13/03 PM   3.1/ 3.6   1.1/ 1.6   0.5/ 1.0     1       None    
 14/03 AM   2.7/ 3.2   0.7/ 1.1   0.6/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  12.0/12.5   1.5/ 2.0   0.4/ 0.9     2       None    
 12/04 AM  10.5/11.0   0.0/ 0.5   0.5/ 1.0     2       None    
 12/05 PM  11.7/12.2   1.2/ 1.7   0.5/ 1.0     2       None    
 13/05 AM  10.1/10.6  -0.5/ 0.0   0.5/ 1.0     1       None    
 13/06 PM  11.4/11.9   0.9/ 1.4   0.6/ 1.1     1       None    
 14/07 AM  10.1/10.6  -0.5/ 0.0   0.6/ 1.1     1       None

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 
 --------  ---------  ---------  ---------  -------  --------
 11/05 PM   6.1/ 6.6  -1.7/-1.2   0.4/ 0.9     5       None    
 12/05 AM   5.0/ 5.5  -2.7/-2.2   0.4/ 0.9     4       None    
 12/06 PM   6.0/ 6.5  -1.8/-1.3   0.5/ 1.0     3       None    
 13/06 AM   4.9/ 5.4  -2.8/-2.3   0.5/ 1.0    2-3      None    
 13/07 PM   5.9/ 6.4  -1.9/-1.4   0.6/ 1.1     2       None    
 14/08 AM   5.0/ 5.5  -2.7/-2.2   0.6/ 1.1     2       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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  10.3/10.8   0.0/ 0.5   0.5/ 1.0     2       None    
 12/04 AM   8.8/ 9.3  -1.6/-1.1   0.5/ 1.0     2       None    
 12/05 PM  10.0/10.5  -0.3/ 0.2   0.5/ 1.0     1       None    
 13/05 AM   8.5/ 9.0  -1.9/-1.4   0.5/ 1.0     1       None    
 13/06 PM   9.7/10.2  -0.7/-0.2   0.6/ 1.1     1       None    
 14/07 AM   8.4/ 8.9  -2.0/-1.5   0.6/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/05 PM   4.2/ 4.7   0.7/ 1.1   0.5/ 1.0    4-5      None    
 12/06 AM   3.2/ 3.7  -0.3/ 0.2   0.4/ 0.9     3       None    
 12/06 PM   4.2/ 4.7   0.6/ 1.1   0.5/ 1.0     2       None    
 13/07 AM   3.2/ 3.7  -0.3/ 0.2   0.5/ 1.0     2       None    
 13/07 PM   4.2/ 4.7   0.6/ 1.1   0.6/ 1.1     1       None    
 14/08 AM   3.4/ 3.9  -0.2/ 0.2   0.6/ 1.1     1       None

&&

$$

MAZ015-016-112200-
/O.CON.KBOX.CF.S.0010.000000T0000Z-211011T2200Z/
Suffolk MA-Eastern Norfolk MA-
448 PM EDT Mon Oct 11 2021

...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...

* WHAT...Up to 0.5 feet of inundation above ground level in 
  low-lying areas near shorelines and tidal waterways (10.6 to
  10.8 feet Mean Lower Low Water).

* WHERE...Eastern Norfolk and Suffolk Counties.

* WHEN...Until 6 PM EDT this evening.

* 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.

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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  11.7/12.2   1.8/ 2.2   0.6/ 1.1     1       None    
 12/04 AM  10.1/10.6   0.2/ 0.7   0.7/ 1.1     1       None    
 12/05 PM  11.1/11.6   1.2/ 1.7   0.5/ 1.0     1       None    
 13/05 AM   9.6/10.1  -0.3/ 0.2   0.7/ 1.1     1       None    
 13/06 PM  10.8/11.3   0.9/ 1.4   0.6/ 1.1     1       None    
 14/07 AM   9.4/ 9.9  -0.6/-0.1   0.6/ 1.1     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 
 --------  ---------  ---------  ---------  -------  --------
 11/04 PM  11.5/12.0   1.4/ 1.9   0.5/ 1.0     1       None    
 12/04 AM  10.1/10.6   0.0/ 0.5   0.7/ 1.1     1       None    
 12/05 PM  11.1/11.6   1.0/ 1.5   0.5/ 1.0     1       None    
 13/06 AM   9.7/10.2  -0.5/ 0.0   0.6/ 1.1     1       None    
 13/06 PM  10.8/11.3   0.7/ 1.1   0.6/ 1.1     1       None    
 14/07 AM   9.5/10.0  -0.7/-0.2   0.6/ 1.1     1       None

&&

$$

MAZ023-RIZ008-120000-
/O.CON.KBOX.RP.S.0010.000000T0000Z-211012T0000Z/
Dukes MA-Block Island RI-
448 PM EDT Mon Oct 11 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Dangerous rip currents.

* WHERE...In Massachusetts, Dukes County. In Rhode Island, 
  Block Island.

* 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.

&&

$$

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 11, 3:43 AM EDT	Rip Current Statement	BOX	Barnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth	16 hr

Nearby

Coastal Flood Statements in Massachusetts, 2021 Every coastal flood statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.