Coastal Flood Watch

Locations Affected

Boston, MA ∙ Cambridge, MA ∙ Lynn, MA ∙ Quincy, MA ∙ Revere, MA ∙ Weymouth, MA ∙ Peabody, MA ∙ Gloucester, MA ∙ Braintree, MA ∙ Norwell, MA

Full Alert Message

Coastal Hazard Message National Weather Service Boston/Norton MA 1257 PM EST Fri Jan 30 2026 ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY AFTERNOON... * WHAT...Minor to perhaps moderate coastal flooding possible around high tide. Water could be as deep as 1 to 2 feet. * WHERE...Eastern Massachusetts coast including Cape Cod, Marthas Vineyard and Nantucket. * WHEN...From Sunday morning through Monday afternoon. * IMPACTS...Expect at least shallow flooding less than one foot deep along much of the eastern Massachusetts coastline, resulting in temporary closure of more vulnerable coastal roads around high tide Sunday morning, Sunday evening, and midday Monday. * ADDITIONAL DETAILS...Moderate flooding, should it occur, is more likely along the Bay side of Cape Cod, in Nantucket Harbor, and in Edgartown, Vineyard Haven, and Oak Bluffs on Marthas Vineyard. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && && 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.1/ 8.6 -1.6/-1.1 -0.2/ 0.3 3 None 31/09 AM 10.1/10.6 0.5/ 1.0 0.0/ 0.5 1-2 None 31/10 PM 8.7/ 9.2 -1.0/-0.5 0.1/ 0.6 1-3 None 01/10 AM 11.4/11.9 1.8/ 2.2 1.1/ 1.6 5-8 Minor 01/11 PM 11.1/11.6 1.5/ 2.0 2.2/ 2.7 10-11 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 -------- --------- --------- --------- ------- -------- 30/09 PM 7.2/ 7.7 -2.3/-1.9 -0.2/ 0.3 2-3 None 31/10 AM 9.2/ 9.7 -0.3/ 0.2 0.0/ 0.5 1 None 31/10 PM 7.8/ 8.3 -1.8/-1.3 0.1/ 0.6 1-2 None 01/11 AM 10.5/11.0 1.0/ 1.5 1.2/ 1.7 4-5 None 01/11 PM 10.2/10.7 0.7/ 1.1 2.2/ 2.7 6-7 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.8/ 9.3 -1.6/-1.1 -0.2/ 0.3 2 None 31/09 AM 10.7/11.2 0.4/ 0.9 0.0/ 0.5 1 None 31/10 PM 9.5/10.0 -0.9/-0.4 0.2/ 0.7 1-2 None 01/10 AM 12.2/12.7 1.9/ 2.3 1.3/ 1.8 2 None 01/11 PM 11.8/12.3 1.5/ 2.0 2.2/ 2.7 2 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.6/ 9.1 -1.4/-0.9 -0.2/ 0.3 2 None 31/10 AM 10.5/11.0 0.6/ 1.1 0.0/ 0.5 1 None 31/10 PM 9.3/ 9.8 -0.7/-0.2 0.1/ 0.6 1-2 None 01/10 AM 12.0/12.5 2.1/ 2.6 1.2/ 1.7 2 None 01/11 PM 11.8/12.3 1.9/ 2.3 2.2/ 2.7 2 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.5/ 9.0 -1.5/-1.0 0.0/ 0.5 2-3 None 31/10 AM 10.5/11.0 0.6/ 1.1 0.0/ 0.5 1-2 None 31/10 PM 9.1/ 9.6 -0.9/-0.4 0.2/ 0.7 1-3 None 01/11 AM 12.2/12.7 2.2/ 2.7 1.6/ 2.0 4-7 Minor 01/11 PM 11.7/12.2 1.8/ 2.2 2.5/ 3.0 9 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.5/ 9.0 -1.3/-0.8 -0.2/ 0.3 3 None 31/10 AM 10.5/11.0 0.8/ 1.3 0.0/ 0.5 1-2 None 31/10 PM 9.1/ 9.6 -0.7/-0.2 0.2/ 0.7 1-2 None 01/11 AM 12.1/12.6 2.3/ 2.8 1.5/ 2.0 5-7 Minor 01/11 PM 11.7/12.2 2.0/ 2.5 2.3/ 2.8 10 Minor 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 -------- --------- --------- --------- ------- -------- 30/06 PM 1.1/ 1.6 -1.0/-0.5 -0.5/ 0.0 3 None 31/07 AM 2.2/ 2.7 0.2/ 0.8 -0.2/ 0.3 1-2 None 31/07 PM 1.7/ 2.2 -0.3/ 0.2 0.1/ 0.6 1 None 01/07 AM 3.2/ 3.7 1.2/ 1.7 0.8/ 1.3 3-4 None 01/07 PM 3.5/ 4.0 1.5/ 2.0 1.8/ 2.2 4 None 02/08 AM 4.2/ 4.7 2.2/ 2.7 1.8/ 2.2 3 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 -------- --------- --------- --------- ------- -------- 30/10 PM 4.4/ 4.9 -0.9/-0.4 -0.2/ 0.3 3 None 31/10 AM 6.0/ 6.5 0.8/ 1.3 0.0/ 0.5 2 None 31/11 PM 4.9/ 5.4 -0.3/ 0.2 0.1/ 0.6 1-3 None 01/11 AM 7.1/ 7.6 1.9/ 2.3 1.0/ 1.5 6-8 None 02/12 AM 7.0/ 7.5 1.8/ 2.2 2.0/ 2.5 11-12 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 -------- --------- --------- --------- ------- -------- 30/10 PM 3.2/ 3.7 -1.3/-0.8 -0.2/ 0.3 2-3 None 31/11 AM 4.7/ 5.2 0.2/ 0.8 0.0/ 0.5 1-2 None 31/11 PM 3.7/ 4.2 -0.9/-0.4 0.1/ 0.6 1-3 None 01/12 PM 5.9/ 6.4 1.4/ 1.9 1.1/ 1.6 6-8 None 02/12 AM 5.7/ 6.2 1.3/ 1.8 2.1/ 2.6 10 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 -------- --------- --------- --------- ------- -------- 30/10 PM 2.7/ 3.2 -1.1/-0.6 0.0/ 0.5 2 None 31/10 AM 4.2/ 4.7 0.5/ 1.0 0.1/ 0.6 1 None 31/11 PM 3.2/ 3.7 -0.7/-0.2 0.2/ 0.8 1-3 None 01/12 PM 5.7/ 6.2 1.9/ 2.3 1.6/ 2.0 4-5 Minor 02/12 AM 5.7/ 6.2 1.9/ 2.3 2.6/ 3.1 6 Minor 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.7/ 9.2 -1.5/-1.0 0.0/ 0.5 3-4 None 31/09 AM 10.6/11.1 0.5/ 1.0 0.1/ 0.6 2 None 31/10 PM 9.3/ 9.8 -0.9/-0.4 0.2/ 0.7 1-2 None 01/10 AM 12.0/12.5 1.9/ 2.3 1.3/ 1.8 5-9 None 01/11 PM 11.9/12.4 1.8/ 2.2 2.5/ 3.0 13 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 -------- --------- --------- --------- ------- -------- 30/09 PM 9.5/10.0 -1.1/-0.6 0.2/ 0.7 2-3 None 31/09 AM 11.3/11.8 0.8/ 1.3 0.2/ 0.7 1-2 None 31/10 PM 10.0/10.5 -0.6/-0.1 0.2/ 0.8 1-2 None 01/10 AM 13.1/13.6 2.6/ 3.1 1.8/ 2.2 4-6 Minor 01/11 PM 13.0/13.5 2.5/ 3.0 3.0/ 3.5 8 Minor 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 -------- --------- --------- --------- ------- -------- 30/09 PM 8.1/ 8.6 -2.2/-1.8 0.2/ 0.7 2-3 None 31/09 AM 10.0/10.5 -0.3/ 0.2 0.2/ 0.8 1-2 None 31/10 PM 8.8/ 9.3 -1.6/-1.1 0.5/ 1.0 1-3 None 01/10 AM 11.6/12.1 1.3/ 1.8 1.8/ 2.2 4-5 None 01/11 PM 11.4/11.9 1.1/ 1.6 2.8/ 3.4 8 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 -------- --------- --------- --------- ------- -------- 30/06 PM 2.7/ 3.2 -1.8/-1.3 -0.9/-0.4 2-3 None 31/07 AM 4.0/ 4.5 -0.5/ 0.0 -0.5/ 0.0 1 None 31/07 PM 3.2/ 3.7 -1.1/-0.7 -0.5/ 0.0 1 None 01/08 AM 4.7/ 5.2 0.2/ 0.8 0.2/ 0.8 3 None 01/08 PM 5.2/ 5.7 0.9/ 1.4 1.3/ 1.8 4 None 02/08 AM 5.9/ 6.4 1.5/ 2.0 1.5/ 2.0 3 None Edgartown MLLW Categories - Minor 4.0 ft, Moderate 5.0 ft, Major 7.0 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 4.3 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 30/10 PM 1.7/ 2.2 -1.1/-0.6 -0.2/ 0.2 2-3 None 31/10 AM 3.1/ 3.6 0.4/ 0.9 0.0/ 0.5 1-2 None 31/11 PM 2.2/ 2.7 -0.6/-0.1 0.2/ 0.7 1-3 None 01/11 AM 4.2/ 4.7 1.6/ 2.0 1.3/ 1.8 4-5 Minor 02/12 AM 4.4/ 4.9 1.7/ 2.2 2.2/ 2.7 5 Minor Vineyard Haven MLLW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.0 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 30/10 PM 1.2/ 1.7 -0.9/-0.4 -0.2/ 0.2 2-3 None 31/09 AM 2.0/ 2.5 0.0/ 0.5 0.0/ 0.5 1 None 31/10 PM 1.7/ 2.2 -0.3/ 0.2 0.2/ 0.7 1-2 None 01/10 AM 3.2/ 3.7 1.2/ 1.7 1.2/ 1.7 3-4 None 01/11 PM 3.7/ 4.2 1.8/ 2.2 2.2/ 2.7 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 -------- --------- --------- --------- ------- -------- 30/12 PM 4.2/ 4.7 0.7/ 1.1 1.7/ 2.2 4-5 None 30/10 PM 2.5/ 3.0 -1.1/-0.7 -0.2/ 0.3 3-4 None 31/10 AM 3.9/ 4.4 0.2/ 0.8 0.0/ 0.5 2 None 31/11 PM 2.8/ 3.4 -0.8/-0.2 0.2/ 0.7 1-3 None 01/12 PM 5.6/ 6.1 2.0/ 2.5 1.7/ 2.2 6-8 Minor 02/12 AM 5.2/ 5.7 1.7/ 2.2 2.5/ 3.0 9 Minor

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