933
WHUS41 KBOX 190559
CFWBOX
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
159 AM EDT SUN APR 19 2026
MAZ007-015-016-019-022-024-190800-
/O.CON.KBOX.CF.S.0003.000000T0000Z-260419T0800Z/
EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA-
EASTERN PLYMOUTH MA-BARNSTABLE MA-NANTUCKET MA-
159 AM EDT SUN APR 19 2026
...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 4 AM EDT EARLY
THIS MORNING...
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL IN
LOW-LYING AREAS NEAR SHORELINES AND TIDAL WATERWAYS (0.3 TO
11.9 FEET MEAN LOWER LOW WATER).
* WHERE...EASTERN ESSEX MA, SUFFOLK MA, EASTERN NORFOLK MA,
EASTERN PLYMOUTH MA, BARNSTABLE MA AND NANTUCKET MA COUNTIES.
* WHEN...UNTIL 4 AM EDT EARLY THIS MORNING.
* 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.
GLOUCESTER HARBOR
MLLW CATEGORIES - MINOR 11.5 FT, MODERATE 13.0 FT, MAJOR 15.0 FT
MHHW CATEGORIES - MINOR 1.9 FT, MODERATE 3.4 FT, MAJOR 5.4 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
19/01 AM 11.9/12.4 2.2/ 2.7 1.1/ 1.6 3 MINOR
19/01 PM 9.8/10.3 0.2/ 0.7 0.4/ 0.9 3 NONE
20/02 AM 10.9/11.4 1.3/ 1.8 0.0/ 0.5 3 NONE
20/02 PM 9.2/ 9.7 -0.5/ 0.0 -0.2/ 0.3 2 NONE
21/02 AM 10.6/11.1 1.0/ 1.5 -0.2/ 0.3 2-3 NONE
21/03 PM 8.9/ 9.4 -0.8/-0.2 -0.2/ 0.2 2 NONE
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
-------- --------- --------- --------- ------- --------
19/01 AM 11.1/11.6 1.6/ 2.0 1.3/ 1.8 2 MINOR
19/02 PM 8.9/ 9.4 -0.7/-0.2 0.4/ 0.9 2-3 NONE
20/02 AM 9.9/10.4 0.4/ 0.9 0.0/ 0.5 2 NONE
20/03 PM 8.2/ 8.7 -1.4/-0.9 -0.2/ 0.3 2 NONE
21/03 AM 9.6/10.1 0.1/ 0.6 -0.2/ 0.2 2 NONE
21/03 PM 7.8/ 8.4 -1.7/-1.2 -0.2/ 0.2 2 NONE
BOSTON HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 14.0 FT, MAJOR 15.0 FT
MHHW CATEGORIES - MINOR 2.2 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 AM 12.3/12.8 2.0/ 2.5 0.7/ 1.1 1 MINOR
19/01 PM 10.7/11.2 0.4/ 0.9 0.5/ 1.0 1-2 NONE
20/01 AM 11.6/12.1 1.3/ 1.8 0.2/ 0.7 1-2 NONE
20/02 PM 10.0/10.5 -0.3/ 0.2 0.0/ 0.5 1 NONE
21/02 AM 11.3/11.8 1.0/ 1.5 0.0/ 0.5 1-2 NONE
21/03 PM 9.6/10.1 -0.8/-0.2 -0.2/ 0.3 1 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
-------- --------- --------- --------- ------- --------
19/01 AM 12.1/12.6 2.2/ 2.7 0.7/ 1.1 1 NONE
19/01 PM 10.4/10.9 0.5/ 1.0 0.2/ 0.8 1-2 NONE
20/01 AM 11.3/11.8 1.4/ 1.9 0.1/ 0.6 1-2 NONE
20/02 PM 9.7/10.2 -0.2/ 0.2 -0.2/ 0.3 1 NONE
21/02 AM 11.0/11.5 1.1/ 1.6 -0.2/ 0.3 1 NONE
21/03 PM 9.3/ 9.8 -0.7/-0.2 -0.2/ 0.2 1 NONE
GREEN HARBOR
MLLW CATEGORIES - MINOR 11.5 FT, MODERATE 13.5 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 1.6 FT, MODERATE 3.6 FT, MAJOR 5.6 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
19/01 AM 10.7/11.2 0.8/ 1.3 -0.5/ 0.0 2 NONE
19/01 PM 10.1/10.6 0.2/ 0.7 0.5/ 1.0 2 NONE
20/02 AM 11.3/11.8 1.4/ 1.9 0.1/ 0.6 2 MINOR
20/02 PM 9.6/10.1 -0.3/ 0.2 0.0/ 0.5 1-2 NONE
21/02 AM 11.0/11.5 1.1/ 1.6 0.1/ 0.6 2 NONE
21/03 PM 9.3/ 9.8 -0.7/-0.2 -0.2/ 0.3 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
-------- --------- --------- --------- ------- --------
19/01 AM 11.1/11.6 1.4/ 1.9 0.2/ 0.7 2 NONE
19/01 PM 10.1/10.6 0.4/ 0.9 0.6/ 1.1 3 NONE
20/02 AM 11.2/11.7 1.5/ 2.0 0.2/ 0.7 2-3 NONE
20/02 PM 9.5/10.0 -0.2/ 0.2 0.1/ 0.6 2 NONE
21/02 AM 10.9/11.4 1.2/ 1.7 0.1/ 0.6 2 NONE
21/03 PM 9.2/ 9.7 -0.6/-0.1 0.0/ 0.5 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
-------- --------- --------- --------- ------- --------
19/10 AM 1.8/ 2.2 -0.2/ 0.2 0.1/ 0.6 1-2 NONE
19/11 PM 2.2/ 2.7 0.2/ 0.7 -0.6/-0.1 2 NONE
20/11 AM 1.4/ 1.9 -0.7/-0.2 -0.3/ 0.2 1-2 NONE
20/11 PM 2.0/ 2.5 0.0/ 0.5 -0.5/ 0.0 1-2 NONE
21/12 PM 1.4/ 1.9 -0.7/-0.2 -0.2/ 0.2 1 NONE
CHATHAM MA - EAST COAST
MLLW CATEGORIES - MINOR 9.0 FT, MODERATE 11.5 FT, MAJOR 13.0 FT
MHHW CATEGORIES - MINOR 3.8 FT, MODERATE 6.3 FT, MAJOR 7.8 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
19/01 AM 7.3/ 7.8 2.1/ 2.6 1.0/ 1.5 3 NONE
19/02 PM 5.6/ 6.1 0.4/ 0.9 0.4/ 0.9 3-4 NONE
20/02 AM 6.6/ 7.1 1.4/ 1.9 0.2/ 0.7 3 NONE
20/03 PM 4.9/ 5.4 -0.3/ 0.2 -0.2/ 0.3 2 NONE
21/03 AM 6.2/ 6.7 1.0/ 1.5 -0.2/ 0.3 2 NONE
21/04 PM 4.7/ 5.2 -0.6/-0.1 -0.2/ 0.2 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
-------- --------- --------- --------- ------- --------
19/01 AM 5.4/ 5.9 0.9/ 1.4 0.7/ 1.1 2 NONE
19/02 PM 4.2/ 4.7 -0.2/ 0.2 0.6/ 1.1 3 NONE
20/02 AM 5.1/ 5.6 0.6/ 1.1 0.2/ 0.7 2-3 NONE
20/04 PM 3.7/ 4.2 -0.8/-0.2 0.1/ 0.6 2 NONE
21/03 AM 4.5/ 5.0 0.0/ 0.5 -0.5/ 0.0 2 NONE
21/04 PM 3.5/ 4.0 -1.1/-0.6 -0.2/ 0.2 2 NONE
HYANNIS HARBOR
MLLW CATEGORIES - MINOR 5.0 FT, MODERATE 6.5 FT, MAJOR 8.5 FT
MHHW CATEGORIES - MINOR 1.2 FT, MODERATE 2.7 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 AM 4.0/ 4.5 0.2/ 0.7 -0.2/ 0.2 1 NONE
19/02 PM 3.6/ 4.1 -0.2/ 0.2 0.5/ 1.0 2-3 NONE
20/03 AM 4.2/ 4.7 0.4/ 0.9 -0.2/ 0.3 1-2 NONE
20/03 PM 3.0/ 3.5 -0.9/-0.4 -0.2/ 0.3 1 NONE
21/04 AM 3.6/ 4.1 -0.2/ 0.2 -0.7/-0.2 1-2 NONE
21/05 PM 2.7/ 3.2 -1.1/-0.6 -0.2/ 0.2 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 AM 12.2/12.7 2.1/ 2.6 0.7/ 1.1 2-3 NONE
19/01 PM 10.6/11.1 0.5/ 1.0 0.6/ 1.1 3 NONE
20/02 AM 11.6/12.1 1.5/ 2.0 0.2/ 0.7 2-3 NONE
20/02 PM 9.9/10.4 -0.2/ 0.2 0.1/ 0.6 2 NONE
21/02 AM 11.0/11.5 0.9/ 1.4 0.1/ 0.6 2 NONE
21/03 PM 9.4/ 9.9 -0.8/-0.2 -0.2/ 0.3 2 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 AM 12.7/13.2 2.2/ 2.7 0.7/ 1.1 2 NONE
19/01 PM 11.2/11.7 0.7/ 1.1 0.7/ 1.1 2-3 NONE
20/02 AM 12.5/13.0 2.0/ 2.5 0.4/ 0.9 2 NONE
20/02 PM 10.7/11.2 0.2/ 0.7 0.2/ 0.7 1 NONE
21/02 AM 12.2/12.7 1.7/ 2.2 0.5/ 1.0 1-2 NONE
21/03 PM 10.3/10.8 -0.2/ 0.2 0.1/ 0.6 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
-------- --------- --------- --------- ------- --------
19/01 PM 9.5/10.0 -0.9/-0.4 0.7/ 1.1 2 NONE
20/01 AM 10.4/10.9 0.1/ 0.6 0.5/ 1.0 1-2 NONE
20/02 PM 8.9/ 9.4 -1.5/-1.0 0.2/ 0.7 1 NONE
21/02 AM 10.3/10.8 0.0/ 0.5 0.4/ 0.9 1-2 NONE
21/03 PM 8.5/ 9.0 -1.9/-1.4 0.1/ 0.6 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
-------- --------- --------- --------- ------- --------
19/10 AM 3.7/ 4.2 -0.8/-0.2 -0.3/ 0.2 1-2 NONE
19/11 PM 3.7/ 4.2 -0.7/-0.2 -1.1/-0.7 1-2 NONE
20/10 AM 3.1/ 3.6 -1.4/-0.9 -0.3/ 0.2 1 NONE
20/11 PM 3.7/ 4.2 -0.8/-0.2 -0.9/-0.4 1-2 NONE
21/12 PM 3.1/ 3.6 -1.4/-0.9 -0.7/-0.2 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
-------- --------- --------- --------- ------- --------
19/01 AM 4.7/ 5.2 1.2/ 1.7 1.0/ 1.5 2 MINOR
19/02 PM 3.2/ 3.7 -0.3/ 0.2 0.4/ 0.9 3-4 NONE
20/03 AM 4.0/ 4.5 0.5/ 1.0 0.1/ 0.6 3 NONE
20/04 PM 2.7/ 3.2 -0.9/-0.4 0.0/ 0.5 2 NONE
21/04 AM 3.7/ 4.2 0.2/ 0.7 -0.2/ 0.2 2-3 NONE
21/05 PM 2.7/ 3.2 -1.0/-0.5 -0.2/ 0.3 2 NONE
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