Alert archive / Massachusetts / Rip Current Statements in 2021

Rip Current Statement 10, NWS Boston/Norton, MA

October 11, 20216 counties in Massachusetts; Washington County, Rhode Island

NWS Boston/Norton, MA issued this rip current statement at Oct 11, 2021, 3:43 AM EDT for 6 counties in Massachusetts; Washington County, Rhode Island. It took effect at Oct 11, 2021, 8:00 AM EDT. It was in force for 12 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, 8:00 AM EDT
Expired
Oct 11, 2021, 8:00 PM EDT
In force
12 hr
Issued by
NWS Boston/Norton, MA

Counties Barnstable County, MA, Dukes County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Washington County, RI

The radar

The Boston radar (KBOX), 35 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

Brookhaven, NY (KOKX), launched 00:00Z, 7.7 hours before the alert went out and 203 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2021-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
7 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
516 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
46 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.

&&

$$
2 follow-up statements
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.

&&

$$
310 
WHUS41 KBOX 120000
CFWBOX

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

MAZ007-019-022>024-RIZ008-120100-
/O.EXP.KBOX.RP.S.0010.000000T0000Z-211012T0000Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA-
Nantucket MA-Block Island RI-
800 PM EDT Mon Oct 11 2021

...HIGH RIP CURRENT RISK HAS EXPIRED...

$$

What forecasters said that day

The local office's own words before this rip current statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this rip current statement went out at Oct 11, 1:48 AM EDT, 1 hour 55 minutes earlier.

Area forecast discussion, Oct 11, 1:48 AM EDT, 1 hour 55 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
148 AM EDT Mon Oct 11 2021

.SYNOPSIS...
Southern New England is sandwich between an area of high and low
pressure this holiday weekend. Chance for showers across south coast
while drier to the north. A low probability of a shower or two on
Monday accompanied by mild temperatures approaching 70F. High
pressure returns and dominates much of the week ahead with dry
and mild conditions.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
145 AM update...

Moderate to heavy rain continues to remain mainly offshore
early this morning. The exception is Nantucket, as well as areas
along the immediate south coast. But even then, the more
consistent moderate rain earlier has tapered off to scattered
light showers. Overall, forecast remains largely on track.
Expect the high to our north to continue suppressing the bulk of
the rain overnight.

Previous Discussion...

A coastal low pressure system sitting off the coast of Delaware
continues its journey towards the northeast. But a strong area
of high pressure over Nova Scotia, at 1030mb, continues to
suppress the system to the south. Between these to areas of
pressure is a tight pressure gradient across the south coast
which will enhance wind gusts through tonight. Wind is east to
northeast at 5 to 15 knots and gust 20 to 25 knots. The stronger
winds will be felt on the Islands, and south coast of RI and
MA.

Good news, the bulk of the rain should remain off shore and any
appreciable rain will be found along the immediate south coast, Cape
Cod, and the Islands. Generally rain totals are a few hundredths of
an inch along the I-95 corridor to a quarter of an inch for the
Islands. Areas of patchy fog/low stratus is likely across central
and western Massachusetts overnight and into early Monday morning.

Temperatures are mild once again as lows hold steady in the mid-50s
to low-60s overnight. For example, Boston's normal low is 50F and
it's forecast to reach 59F. Much of the area will feel similar
overnight "warmth". The coolest spots are the eastern slopes of the
Berkshires with lows around 50F.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM TUESDAY/...
The coastal low will begin to decay as mid-level heights increase
starting on Monday morning. What remains of this area of low
pressure will slide off to the east while high pressure moves in
from the northeast. Best chance for a shower during the morning will
be areas south and east of Boston. But, given the easterly flow and
lingering moisture, we can't rule out a low probability of a light
shower Monday afternoon across the metro area of Boston. This
wouldn't be a washout by any means. Just expect plenty of cloud cover
throughout much of Monday with gradual clearing during the afternoon
hours.

Dew points and temperatures will be more noticeable too.
Temperatures aloft are in the neighborhood of +13C to +14C at 925mb
which should translate to afternoon highs in the upper 60s to 70F.

Monday evening into Monday night. Drier air aloft will begin to
filter into the low and mid levels, this will lead to partial
clearing. Lows early Tuesday morning are in the upper 40s to middle-
50s which is still about 5 degrees above the normal.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Highlights

* Dry and quiet weather for much of the upcoming week with above
  normal temperatures.

* Isolated showers possible across portions of the interior on
  Wednesday. Next opportunity for more rain comes next weekend.

Details...

Tuesday through Friday...

High pressure ridging will dominate for most of the upcoming work
week. Early on we'll have a surface high centered over southern New
England on Tuesday with the mid level ridge axis directly overhead.
This keeps weather quiet with a fairly dry column (PWATs <1")
allowing for a good amount of sun and light winds. Low level flow
will slowly begin veering to the southeast then the south through
the day, moderating the airmass and warming temperatures a bit
compared to Monday, in the mid 70s.

Wednesday flow becomes southwest pushing temperatures even higher
above normal, into the mid to upper 70s. For perspective, the normal
high for this time of year would be in the low to mid 60s. Trends
have been drier for Wednesday as a weak shortwave and series of
fronts moves through. Moisture is limited and forcing is weak, so
most will stay dry. Any rain should be light and isolated in nature.
For the latter half of the week high pressure ridging returns
keeping things dry and temperatures holding steady in the mid to
upper 70s.

Saturday and Sunday...

The pattern looks to break down around next weekend as our next
shortwave approaches from the west. While rain chances are higher
for the weekend than the workweek, confidence remains low in any
location or timing details at this distance in time.

&&

.AVIATION /06Z MONDAY THROUGH FRIDAY/...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

0540Z update...

Rest of tonight...Moderate confidence.

A mix of low VFR to MVFR conditions across most terminals,
except for LIFR at ORH. Scattered light showers possible for
terminals near and along the immediate south MA/RI coast. Patchy
fog could also develop during the pre-dawn hours, but should
dissipate shortly after daybreak. Easterly winds shifting to
the northeast at 5-10 knots. Gusts of 20-25 knots along and
south of the south coast.

Monday...High confidence in trends, but moderate in timing.

MVFR/IFR conditions early morning will gradually improver to VFR
by mid to late morning. MVFR could linger into the mid to late
afternoon across the interior high terrain and Cape terminals.
Winds are northeast 5 to 15 knots with occasional gust to 20
knots along the south coast.

KBOS Terminal...Moderate confidence in TAF.

KBDL Terminal...Moderate confidence in TAF.

Outlook /Tuesday Night through Friday/...

Tuesday: VFR.

Tuesday Night: VFR. Patchy BR.

Wednesday: VFR.

Wednesday Night through Friday:

&&

.MARINE...
Forecaster Confidence Levels.

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Small Craft Advisories remain in effect overnight for the southern
and southeastern coastal waters for gusts up to 25 knots and seas
over 5 foot. SCA are expected to extend to the northeastern waters
Monday morning. A coastal low pressure system will weaken as it
moves northeast off of the Mid-Atlantic states and will bring
periods of rain.

Outlook /Tuesday Night through Friday/...

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Tuesday Night through Wednesday: Winds less than 25 kt. Seas
locally approaching 5 ft.

Wednesday Night through Friday: Winds less than 25 kt.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 AM EDT Tuesday for ANZ235-237.
     Small Craft Advisory from 6 AM this morning to 6 AM EDT
     Tuesday for ANZ250.
     Small Craft Advisory until 8 AM EDT Tuesday for ANZ254>256.

&&

SYNOPSIS...BW/Gaucher
NEAR TERM...Chai/Gaucher
SHORT TERM...Gaucher
LONG TERM...BW
AVIATION...Chai/Gaucher
MARINE...BW/Gaucher
Hazardous weather outlook, Oct 10, 4:33 PM EDT, 11 hours 10 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
433 PM EDT Sun Oct 10 2021

CTZ002>004-MAZ002>024-026-RIZ001>008-112045-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA-
Western Essex MA-Eastern Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Eastern Norfolk MA-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
433 PM EDT Sun Oct 10 2021

This Hazardous Weather Outlook is for northern Connecticut, all of
Massachusetts east of Berkshire County, and Rhode Island.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-112045-
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard and
Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out to
20 nm South of Block Island-
433 PM EDT Sun Oct 10 2021

This Hazardous Weather Outlook is for Massachusetts and Rhode
Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For more information on upcoming hazardous weather, please see the
Area Forecast Discussion on our webpage for the latest forecast
thinking. There is also our Enhanced Hazardous Weather Outlook at
www.weather.gov/box/ehwo

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/nwsboston

You can follow us on Twitter at
@NWSBoston

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 3:43 AM EDTCoastal Flood StatementBOXBarnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk14 hr

Nearby

Rip Current Statements in Massachusetts, 2021Rip Current Statements in Rhode Island, 2021Every rip current 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.