936  
WHUS41 KBOX 191422  
CFWBOX  
 
COASTAL HAZARD MESSAGE  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1022 AM EDT SAT SEP 19 2020  
 
MAZ007-019-022-024-192230-  
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200922T0000Z/  
/O.CON.KBOX.CF.S.0008.200919T1500Z-200919T1900Z/  
EASTERN ESSEX MA-EASTERN PLYMOUTH MA-BARNSTABLE MA-NANTUCKET MA-  
1022 AM EDT SAT SEP 19 2020  
   
..HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT MONDAY
 
 
* WHAT...FOR THE HIGH SURF ADVISORY, LARGE BREAKING WAVES OF 4  
TO 12 FEET IN THE SURF ZONE. IN ADDITION, A COASTAL FLOOD STATEMENT  
IS IN EFFECT FOR SPLASHOVER AND POCKETS OF VERY MINOR COASTAL FLOODING  
THAT ARE POSSIBLE DURING THE MID DAY ASTRONOMICAL HIGH TIDE.  
 
* WHERE...EASTERN PLYMOUTH MA, EASTERN ESSEX MA, BARNSTABLE MA  
AND NANTUCKET MA COUNTIES.  
 
* WHEN...FOR THE HIGH SURF ADVISORY, UNTIL 8 PM EDT MONDAY. FOR  
THE, UNTIL 3 PM EDT THIS AFTERNOON.  
 
* IMPACTS...MINOR COASTAL FLOODING IS EXPECTED ALONG THE NORTH  
SHORE FROM GLOUCESTER TO NEWBURYPORT. WAVE ACTION WILL LIKELY  
CAUSE SOME WASHOVER ONTO COASTAL ROADS AROUND THE TIME OF HIGH  
TIDE. DANGEROUS SWIMMING AND SURFING CONDITIONS AND LOCALIZED  
BEACH EROSION.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
DO NOT DRIVE THROUGH FLOODED ROADWAYS.  
 
INEXPERIENCED SWIMMERS SHOULD REMAIN OUT OF THE WATER DUE TO  
DANGEROUS SURF CONDITIONS.  
 

 
 

 
 
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 10.0/10.5 0.5/ 1.0 0.2/ 0.7 1 NONE  
20/02 AM 9.7/10.2 0.2/ 0.7 0.2/ 0.7 1 NONE  
20/02 PM 10.4/10.9 0.9/ 1.4 0.5/ 1.0 1 NONE  
21/03 AM 9.7/10.2 0.2/ 0.7 0.5/ 1.0 1 NONE  
21/03 PM 10.6/11.1 1.1/ 1.6 0.7/ 1.1 1 MINOR  
 
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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.2/11.7 1.7/ 2.2 0.2/ 0.7 5-6 MINOR  
20/02 AM 11.0/11.5 1.5/ 2.0 0.2/ 0.7 5-6 NONE  
20/02 PM 11.6/12.1 2.1/ 2.6 0.5/ 1.0 6-7 MINOR  
21/03 AM 10.9/11.4 1.4/ 1.9 0.5/ 1.0 6-7 NONE  
21/03 PM 11.6/12.1 2.1/ 2.6 0.7/ 1.1 7 MINOR  
 
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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.1/11.6 1.4/ 1.9 0.2/ 0.7 5-6 MINOR  
20/02 AM 10.9/11.4 1.2/ 1.7 0.2/ 0.7 4-6 NONE  
20/02 PM 11.6/12.1 1.9/ 2.3 0.5/ 1.0 6-7 MINOR  
21/03 AM 10.9/11.4 1.2/ 1.7 0.5/ 1.0 6-7 NONE  
21/03 PM 11.7/12.2 2.0/ 2.5 0.7/ 1.1 7 MINOR  
 
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 5.7/ 6.2 1.3/ 1.8 0.2/ 0.7 2 NONE  
19/10 PM 5.1/ 5.6 0.7/ 1.1 0.2/ 0.7 1 NONE  
20/11 AM 5.7/ 6.2 1.3/ 1.8 0.2/ 0.8 2-3 NONE  
20/11 PM 5.0/ 5.5 0.6/ 1.1 0.2/ 0.8 2 NONE  
21/12 PM 5.7/ 6.2 1.3/ 1.8 0.5/ 1.0 3 NONE  
22/12 AM 4.9/ 5.4 0.5/ 1.0 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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.9/12.4 1.8/ 2.2 0.2/ 0.8 2 NONE  
20/02 AM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 1-2 NONE  
20/02 PM 12.2/12.7 2.1/ 2.6 0.5/ 1.0 3 NONE  
21/03 AM 11.6/12.1 1.5/ 2.0 0.6/ 1.1 3 NONE  
21/03 PM 12.2/12.7 2.1/ 2.6 0.7/ 1.1 3 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  
-------- --------- --------- --------- ------- --------  
19/02 PM 5.7/ 6.2 -2.0/-1.5 0.2/ 0.7 6-7 NONE  
20/03 AM 5.7/ 6.2 -2.0/-1.6 0.2/ 0.7 5-6 NONE  
20/03 PM 6.2/ 6.7 -1.6/-1.1 0.5/ 1.0 7-8 NONE  
21/04 AM 5.7/ 6.2 -2.0/-1.5 0.5/ 1.0 8-9 NONE  
21/04 PM 6.5/ 7.0 -1.3/-0.8 0.7/ 1.1 9 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  
-------- --------- --------- --------- ------- --------  
19/10 AM 3.5/ 4.0 1.5/ 2.0 0.2/ 0.8 2 NONE  
19/10 PM 3.0/ 3.5 1.0/ 1.5 0.2/ 0.7 1 NONE  
20/11 AM 3.5/ 4.0 1.5/ 2.0 0.2/ 0.8 2-3 NONE  
20/11 PM 2.8/ 3.4 0.9/ 1.4 0.2/ 0.8 3 NONE  
21/12 PM 3.6/ 4.1 1.6/ 2.0 0.5/ 1.0 3 NONE  
22/12 AM 3.0/ 3.5 1.0/ 1.5 0.5/ 1.0 3 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  
-------- --------- --------- --------- ------- --------  
19/01 PM 12.5/13.0 2.0/ 2.5 0.5/ 1.0 2-3 NONE  
20/02 AM 12.1/12.6 1.6/ 2.0 0.2/ 0.8 2 NONE  
20/02 PM 12.8/13.3 2.2/ 2.7 0.6/ 1.1 3 MINOR  
21/03 AM 12.1/12.6 1.6/ 2.0 0.6/ 1.1 3 NONE  
21/03 PM 12.8/13.3 2.2/ 2.7 0.7/ 1.1 3 MINOR  
 
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  
-------- --------- --------- --------- ------- --------  
19/02 PM 4.6/ 5.1 0.1/ 0.6 0.2/ 0.7 2-3 NONE  
20/02 AM 4.4/ 4.9 -0.2/ 0.3 0.2/ 0.7 2 NONE  
20/03 PM 5.1/ 5.6 0.6/ 1.1 0.5/ 1.0 3 NONE  
21/04 AM 4.6/ 5.1 0.1/ 0.6 0.5/ 1.0 3 NONE  
21/04 PM 5.2/ 5.7 0.8/ 1.3 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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.0/11.5 0.7/ 1.1 0.7/ 1.1 4-5 NONE  
20/02 AM 10.5/11.0 0.2/ 0.7 0.5/ 1.0 3-4 NONE  
20/02 PM 11.2/11.7 0.9/ 1.4 0.8/ 1.3 5 NONE  
21/03 AM 10.6/11.1 0.2/ 0.8 0.9/ 1.4 4 NONE  
21/03 PM 11.2/11.7 0.9/ 1.4 0.9/ 1.4 4 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  
-------- --------- --------- --------- ------- --------  
19/02 PM 3.9/ 4.4 0.2/ 0.8 0.2/ 0.7 4 NONE  
20/03 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.7 3-4 NONE  
20/03 PM 4.4/ 4.9 0.8/ 1.3 0.5/ 1.0 4 NONE  
21/04 AM 3.9/ 4.4 0.2/ 0.8 0.5/ 1.0 4 NONE  
21/04 PM 4.6/ 5.1 1.0/ 1.5 0.7/ 1.1 5 MINOR  
 

 
 

 
 
MAZ020-023-RIZ006>008-192230-  
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200922T0000Z/  
SOUTHERN BRISTOL MA-DUKES MA-WASHINGTON RI-NEWPORT RI-  
BLOCK ISLAND RI-  
1022 AM EDT SAT SEP 19 2020  
   
..HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT MONDAY
 
 
* WHAT...LARGE BREAKING WAVES OF 5 TO 12 FEET IN THE SURF ZONE.  
 
* WHERE...IN MASSACHUSETTS, DUKES MA AND SOUTHERN BRISTOL MA  
COUNTIES. IN RHODE ISLAND, WASHINGTON RI, NEWPORT RI AND BLOCK  
ISLAND RI COUNTIES.  
 
* WHEN...UNTIL 8 PM EDT MONDAY.  
 
* IMPACTS...DANGEROUS SWIMMING AND SURFING CONDITIONS AND  
LOCALIZED BEACH EROSION.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED SWIMMERS SHOULD REMAIN OUT OF THE WATER DUE TO  
DANGEROUS SURF CONDITIONS.  
 

 
 

 
 
MAZ015-016-191900-  
/O.CON.KBOX.CF.S.0008.200919T1500Z-200919T1900Z/  
SUFFOLK MA-EASTERN NORFOLK MA-  
1022 AM EDT SAT SEP 19 2020  
 
* WHAT...A COASTAL FLOOD STATEMENT IS IN EFFECT FOR SPLASHOVER  
AND POCKETS OF VERY MINOR COASTAL FLOODING THAT ARE POSSIBLE  
DURING THE MID DAY ASTRONOMICAL HIGH TIDE.  
 
* WHERE...EASTERN NORFOLK MA AND SUFFOLK MA COUNTIES.  
 
* WHEN...UNTIL 3 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.  
 
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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.7/12.2 1.6/ 2.0 0.2/ 0.7 1-2 NONE  
20/02 AM 11.5/12.0 1.4/ 1.9 0.2/ 0.7 2 NONE  
20/02 PM 12.1/12.6 2.0/ 2.5 0.5/ 1.0 2 MINOR  
21/03 AM 11.4/11.9 1.3/ 1.8 0.5/ 1.0 2 NONE  
21/03 PM 12.1/12.6 2.0/ 2.5 0.7/ 1.1 2 MINOR  
 
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  
-------- --------- --------- --------- ------- --------  
19/01 PM 11.6/12.1 1.7/ 2.2 0.2/ 0.7 4-5 NONE  
20/02 AM 11.4/11.9 1.5/ 2.0 0.2/ 0.7 4-5 NONE  
20/02 PM 12.0/12.5 2.1/ 2.6 0.5/ 1.0 5-6 NONE  
21/03 AM 11.3/11.8 1.4/ 1.9 0.5/ 1.0 5-6 NONE  
21/03 PM 12.1/12.6 2.2/ 2.7 0.7/ 1.1 6 MINOR  
 

 
 

 
 
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