• Coastal Flood Advisory for Nantucket County, Massachusetts
  • Coastal Flood Advisory issued September 10 at 10:03PM EDT until September 11 at 2:00AM EDT by NWS
  • Effective: Monday, September 10, 2018 at 10 p.m.
  • Expires: Tuesday, September 11, 2018 at 1 a.m.
  • ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
    TUESDAY...
    * LOCATIONS...Eastern Massachusetts coastline, including Cape Cod
    and Nantucket.
    * TIMING...Around high tide tonight, between 11PM and 2AM.
    * COASTAL FLOOD IMPACTS...Up to one half foot of saltwater
    inundation above ground level is possible in low-lying areas
    near shorelines. Wave action will likely cause some
    washover onto coastal roads around the time of high tide. Minor
    flooding of low-lying coastal sections in Cape Cod Bay is
    possible. Some immediate coastal roads may be flooded for a
    short time nearest high tide due to large surf and high tides.
    Time of high total tides are approximate to the nearest hour.
    Category thresholds are based on still water levels. Impacts
    may be greater, depending upon wave action.
    Newburyport
    MLLW Categories - Minor 11.0 FT, Moderate 12.5 FT, Major 14.0 FT
    MHHW Categories - Minor 1.5 FT, Moderate 3.0 FT, Major 4.5 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 10.1/10.6 0.6/ 1.1 0.2/ 0.8 7 None
    11/01 PM 9.3/ 9.8 -0.2/ 0.2 -0.2/ 0.2 6 None
    12/02 AM 9.3/ 9.8 -0.2/ 0.2 -0.2/ 0.2 4-5 None
    12/02 PM 9.3/ 9.8 -0.2/ 0.2 -0.2/ 0.2 4 None
    13/03 AM 9.0/ 9.5 -0.6/-0.1 -0.2/ 0.2 4 None
    Gloucester Harbor
    MLLW Categories - Minor 12.0 FT, Moderate 14.5 FT, Major 15.5 FT
    MHHW Categories - Minor 2.5 FT, Moderate 5.0 FT, Major 6.0 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 11.4/11.9 1.9/ 2.3 0.4/ 0.9 8 None
    11/01 PM 10.9/11.4 1.4/ 1.9 0.2/ 0.7 7 None
    12/01 AM 10.6/11.1 1.1/ 1.6 -0.2/ 0.3 5 None
    12/02 PM 10.4/10.9 0.9/ 1.4 -0.2/ 0.2 4 None
    13/02 AM 10.1/10.6 0.6/ 1.1 -0.2/ 0.2 4-5 None
    Boston Harbor
    MLLW Categories - Minor 12.5 FT, Moderate 15.0 FT, Major 16.0 FT
    MHHW Categories - Minor 2.4 FT, Moderate 4.9 FT, Major 5.9 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 12.1/12.6 2.0/ 2.5 0.5/ 1.0 2 Minor
    11/01 PM 11.0/11.5 0.9/ 1.4 -0.2/ 0.2 1-2 None
    12/02 AM 11.1/11.6 1.0/ 1.5 -0.2/ 0.2 1 None
    12/02 PM 10.9/11.4 0.8/ 1.3 -0.2/ 0.2 1 None
    13/02 AM 10.6/11.1 0.5/ 1.0 -0.2/ 0.2 1 None
    Revere
    MLLW Categories - Minor 12.5 FT, Moderate 15.0 FT, Major 16.5 FT
    MHHW Categories - Minor 2.6 FT, Moderate 5.1 FT, Major 6.6 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 11.9/12.4 2.0/ 2.5 0.5/ 1.0 7 None
    11/01 PM 11.3/11.8 1.4/ 1.9 0.2/ 0.7 5 None
    12/02 AM 11.0/11.5 1.1/ 1.6 -0.2/ 0.3 3-4 None
    12/02 PM 10.8/11.3 0.9/ 1.4 -0.2/ 0.2 3 None
    13/02 AM 10.5/11.0 0.6/ 1.1 -0.2/ 0.2 3 None
    Scituate
    MLLW Categories - Minor 11.5 FT, Moderate 14.0 FT, Major 16.0 FT
    MHHW Categories - Minor 1.8 FT, Moderate 4.3 FT, Major 6.3 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 11.1/11.6 1.4/ 1.9 0.1/ 0.6 7 None
    11/01 PM 10.5/11.0 0.8/ 1.3 -0.2/ 0.3 5 None
    12/02 AM 10.5/11.0 0.8/ 1.3 -0.2/ 0.2 3-4 None
    12/02 PM 10.4/10.9 0.7/ 1.1 -0.2/ 0.2 3 None
    13/02 AM 10.1/10.6 0.4/ 0.9 -0.2/ 0.2 3 None
    Sandwich / Dennis
    MLLW Categories - Minor 13.0 FT, Moderate 14.0 FT, Major 15.5 FT
    MHHW Categories - Minor 2.7 FT, Moderate 3.7 FT, Major 5.2 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 12.4/12.9 2.1/ 2.6 1.0/ 1.5 3-4 None
    11/01 PM 11.1/11.6 0.8/ 1.3 0.1/ 0.6 2 None
    12/01 AM 10.9/11.4 0.6/ 1.1 -0.2/ 0.3 1 None
    12/02 PM 10.8/11.3 0.5/ 1.0 -0.2/ 0.2 1 None
    13/02 AM 10.4/10.9 0.1/ 0.6 -0.2/ 0.2 1 None
    Provincetown Harbor
    MLLW Categories - Minor 12.5 FT, Moderate 13.5 FT, Major 15.0 FT
    MHHW Categories - Minor 2.4 FT, Moderate 3.4 FT, Major 4.9 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 12.6/13.1 2.5/ 3.0 0.8/ 1.3 3 None
    11/01 PM 11.5/12.0 1.4/ 1.9 0.1/ 0.6 2-3 None
    12/02 AM 11.4/11.9 1.3/ 1.8 -0.2/ 0.3 1 None
    12/02 PM 11.2/11.7 1.1/ 1.6 -0.2/ 0.2 2 None
    13/02 AM 10.9/11.4 0.8/ 1.3 -0.2/ 0.2 2 None
    Chatham - East Coast
    MLLW Categories - Minor 9.5 FT, Moderate 12.0 FT, Major 13.0 FT
    MHHW Categories - Minor 1.8 FT, Moderate 4.3 FT, Major 5.3 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/02 AM 8.0/ 8.5 0.2/ 0.8 1.5/ 2.0 7-8 None
    11/02 PM 6.2/ 6.8 -1.5/-1.0 0.1/ 0.6 6 None
    12/02 AM 6.2/ 6.7 -1.6/-1.1 -0.2/ 0.3 4-5 None
    12/03 PM 6.0/ 6.5 -1.8/-1.3 -0.2/ 0.2 4 None
    13/03 AM 5.7/ 6.2 -2.0/-1.5 -0.2/ 0.2 5 None
    Chatham - South Coast
    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
    -------- --------- --------- --------- ------- --------
    11/02 AM 5.7/ 6.2 1.2/ 1.7 1.2/ 1.7 3 None
    11/02 PM 4.5/ 5.0 0.0/ 0.5 0.2/ 0.7 2 None
    12/03 AM 4.2/ 4.7 -0.3/ 0.2 -0.2/ 0.3 1 None
    12/03 PM 4.0/ 4.5 -0.5/ 0.0 -0.2/ 0.2 3 None
    13/03 AM 3.9/ 4.4 -0.7/-0.2 -0.2/ 0.2 3 None
    Buzzards Bay - 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
    -------- --------- --------- --------- ------- --------
    10/10 PM 3.7/ 4.2 1.7/ 2.2 0.7/ 1.1 3 None
    11/10 AM 3.6/ 4.1 1.6/ 2.0 0.4/ 0.9 2 None
    11/10 PM 2.8/ 3.4 0.9/ 1.4 0.0/ 0.5 1 None
    12/11 AM 2.8/ 3.4 0.9/ 1.4 -0.2/ 0.2 1-2 None
    12/11 PM 2.5/ 3.0 0.5/ 1.0 -0.2/ 0.2 2 None
    13/12 PM 2.7/ 3.2 0.7/ 1.1 -0.2/ 0.2 2-3 None
    Wings Neck
    MLLW Categories - Minor 6.5 FT, Moderate 9.0 FT, Major 11.5 FT
    MHHW Categories - Minor 2.2 FT, Moderate 4.7 FT, Major 7.2 FT
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    10/09 PM 6.5/ 7.0 2.2/ 2.7 1.3/ 1.8 1-2 None
    11/10 AM 5.7/ 6.2 1.5/ 2.0 0.5/ 1.0 2 None
    11/10 PM 5.1/ 5.6 0.8/ 1.3 0.1/ 0.6 1 None
    12/11 AM 4.9/ 5.4 0.6/ 1.1 -0.2/ 0.2 1 None
    12/11 PM 4.6/ 5.1 0.2/ 0.8 -0.2/ 0.3 1 None
    13/11 AM 4.7/ 5.2 0.5/ 1.0 -0.2/ 0.3 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
    -------- --------- --------- --------- ------- --------
    11/02 AM 4.2/ 4.7 0.6/ 1.1 0.5/ 1.0 3 None
    11/02 PM 3.7/ 4.2 0.1/ 0.6 0.1/ 0.6 2 None
    12/03 AM 3.5/ 4.0 -0.2/ 0.3 -0.2/ 0.3 1 None
    12/03 PM 3.4/ 3.9 -0.2/ 0.2 -0.2/ 0.2 3 None
    13/04 AM 3.2/ 3.7 -0.5/ 0.0 -0.2/ 0.2 4 None
    Nantucket East Coast - Erosion Impacts
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 4.7/ 5.2 0.7/ 1.1 0.6/ 1.1 6-7 None
    11/02 PM 4.0/ 4.5 0.0/ 0.5 0.1/ 0.6 5-6 None
    12/03 AM 3.7/ 4.2 -0.3/ 0.2 -0.2/ 0.2 4 None
    12/03 PM 3.9/ 4.4 -0.2/ 0.2 -0.2/ 0.2 4-5 None
    13/03 AM 3.7/ 4.2 -0.5/ 0.0 -0.2/ 0.2 6 None
    Nantucket - Madaket Area Erosion Impacts
    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    11/01 AM 3.2/ 3.7 1.8/ 2.2 0.4/ 0.9 5 None
    11/02 PM 2.8/ 3.4 1.5/ 2.0 0.2/ 0.7 4-5 None
    12/02 AM 2.6/ 3.1 1.2/ 1.7 -0.2/ 0.3 3-4 None
    12/03 PM 2.5/ 3.0 1.1/ 1.6 -0.2/ 0.2 4 None
    13/03 AM 2.3/ 2.8 1.0/ 1.5 -0.2/ 0.2 5-6 None
    &&