Coastal Flood Warning

Locations Affected

Shore Acres, MA ∙ Monument Beach, MA ∙ Centerville, MA ∙ Great Point, MA ∙ Accord, MA ∙ Kent Park, MA ∙ Oak Bluffs, MA ∙ West Yarmouth, MA ∙ South Orleans, MA ∙ Hanover, MA

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service Boston/Norton MA 203 PM EST Sat Feb 21 2026 ...COASTAL FLOOD WARNING IN EFFECT FROM 1 AM TO 7 AM EST MONDAY... * WHAT...Two to three feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (4.5 to 13.5 feet Mean Lower Low Water). * WHERE...Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...From 1 AM to 7 AM EST Monday. * IMPACTS...Many roads near Nantucket Harbor become impassable with 1 to 2 feet of water and affects access to the ferry terminals. This includes Easy Street, South Beach Street, Easton Street, Walsh Street, Willard Street, and Straight Wharf. Many coastal roads become impassable with flooding 1 to 3 feet deep. This includes the Chappy Ferry Dock and Dock Street near Edgartown Harbor. In Vineyard Haven, Five Corners, Beach Road, and Water Street become impassable. In Oak Bluffs, flooding affects East Chop Drive, the section of Lake Avenue near Oak Bluffs Harbor, and Sea View Avenue, where debris may also wash onto the roadway. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && && Time of high total tides are approximate to the nearest hour. 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 -------- --------- --------- --------- ------- -------- 21/02 PM 10.7/11.2 0.8/ 1.3 1.2/ 1.7 3 None 22/02 AM 11.0/11.5 1.1/ 1.6 1.0/ 1.5 2-3 None 22/03 PM 10.3/10.8 0.4/ 0.9 1.1/ 1.6 2 None 23/03 AM 12.6/13.1 2.7/ 3.2 2.5/ 3.0 5-8 Minor 23/04 PM 12.0/12.5 2.1/ 2.6 3.2/ 3.7 12-14 Minor 24/04 AM 11.4/11.9 1.5/ 2.0 1.4/ 1.9 8-9 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 -------- --------- --------- --------- ------- -------- 21/02 PM 10.6/11.1 0.9/ 1.4 1.0/ 1.5 4 None 22/02 AM 10.9/11.4 1.2/ 1.7 0.8/ 1.3 3 None 22/03 PM 10.2/10.7 0.5/ 1.0 1.0/ 1.5 3 None 23/03 AM 12.5/13.0 2.7/ 3.2 2.3/ 2.8 7-11 Minor 23/03 PM 12.0/12.5 2.2/ 2.7 3.4/ 3.9 16-18 Minor 24/04 AM 11.4/11.9 1.7/ 2.2 1.4/ 1.9 9-11 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 -------- --------- --------- --------- ------- -------- 21/11 PM 3.0/ 3.5 1.0/ 1.5 1.0/ 1.5 2 None 22/12 PM 2.3/ 2.8 0.4/ 0.9 1.0/ 1.5 1-2 None 23/01 AM 4.2/ 4.7 2.2/ 2.7 2.3/ 2.8 4-6 None 23/12 PM 3.4/ 3.9 1.4/ 1.9 2.2/ 2.7 7 None 24/01 AM 3.2/ 3.7 1.2/ 1.7 1.3/ 1.8 3-6 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 -------- --------- --------- --------- ------- -------- 21/03 PM 6.1/ 6.6 0.9/ 1.4 1.0/ 1.5 3-4 None 22/03 AM 6.4/ 6.9 1.2/ 1.7 0.7/ 1.1 3 None 22/03 PM 5.7/ 6.2 0.6/ 1.1 1.0/ 1.5 3 None 23/04 AM 8.3/ 8.8 3.1/ 3.6 2.6/ 3.1 8-13 None 23/04 PM 6.9/ 7.4 1.7/ 2.2 2.3/ 2.8 17-18 None 24/04 AM 6.9/ 7.4 1.7/ 2.2 1.4/ 1.9 9-11 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 -------- --------- --------- --------- ------- -------- 21/03 PM 4.9/ 5.4 0.4/ 0.9 1.1/ 1.6 3 None 22/03 AM 5.2/ 5.7 0.7/ 1.1 0.8/ 1.3 3 None 22/04 PM 4.7/ 5.2 0.2/ 0.7 1.0/ 1.5 2-3 None 23/04 AM 6.6/ 7.1 2.1/ 2.6 2.1/ 2.6 7-11 None 23/04 PM 5.2/ 5.7 0.8/ 1.3 1.9/ 2.3 14-16 None 24/05 AM 6.2/ 6.7 1.7/ 2.2 1.6/ 2.0 8-9 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 -------- --------- --------- --------- ------- -------- 21/03 PM 4.7/ 5.2 0.9/ 1.4 1.6/ 2.0 2 None 22/03 AM 5.0/ 5.5 1.2/ 1.7 1.4/ 1.9 1 Minor 22/04 PM 4.2/ 4.7 0.5/ 1.0 1.4/ 1.9 1-2 None 23/04 AM 6.7/ 7.2 2.8/ 3.4 3.0/ 3.5 5-7 Moderate 23/05 PM 6.1/ 6.6 2.2/ 2.7 3.2/ 3.7 8 Minor 24/05 AM 5.0/ 5.5 1.2/ 1.7 1.2/ 1.7 4-5 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 -------- --------- --------- --------- ------- -------- 21/02 PM 11.1/11.6 1.0/ 1.5 1.1/ 1.6 4 None 22/02 AM 11.3/11.8 1.2/ 1.7 0.9/ 1.4 3 None 22/03 PM 10.5/11.0 0.4/ 0.9 0.9/ 1.4 3 None 23/03 AM 12.6/13.1 2.5/ 3.0 2.2/ 2.7 7-12 None 23/04 PM 12.3/12.8 2.2/ 2.7 3.2/ 3.7 18-20 None 24/04 AM 11.8/12.3 1.7/ 2.2 1.6/ 2.0 10-13 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 -------- --------- --------- --------- ------- -------- 21/02 PM 11.6/12.1 1.1/ 1.6 1.2/ 1.7 2 None 22/02 AM 11.8/12.3 1.3/ 1.8 1.0/ 1.5 2 None 22/03 PM 11.0/11.5 0.5/ 1.0 1.0/ 1.5 2 None 23/03 AM 13.3/13.8 2.7/ 3.2 2.3/ 2.8 5-7 Minor 23/04 PM 13.5/14.0 3.0/ 3.5 3.9/ 4.4 11-12 Minor 24/04 AM 12.6/13.1 2.1/ 2.6 1.8/ 2.2 6-7 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 -------- --------- --------- --------- ------- -------- 21/02 PM 10.8/11.3 0.5/ 1.0 2.1/ 2.6 2 None 22/02 AM 11.2/11.7 0.9/ 1.4 2.0/ 2.5 2 None 22/03 PM 10.4/10.9 0.1/ 0.6 2.1/ 2.6 2 None 23/03 AM 12.2/12.7 1.9/ 2.3 3.0/ 3.5 4-7 Minor 23/04 PM 11.9/12.4 1.6/ 2.0 4.0/ 4.5 10-11 Minor 24/04 AM 11.0/11.5 0.7/ 1.1 1.9/ 2.3 6-7 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 -------- --------- --------- --------- ------- -------- 21/11 PM 5.1/ 5.6 0.7/ 1.1 0.9/ 1.4 1 None 22/12 PM 4.5/ 5.0 0.1/ 0.6 1.0/ 1.5 1-2 None 23/01 AM 5.7/ 6.2 1.4/ 1.9 1.8/ 2.2 4-5 None 23/01 PM 5.4/ 5.9 1.0/ 1.5 2.1/ 2.6 5-6 None 24/01 AM 5.1/ 5.6 0.7/ 1.1 1.0/ 1.5 3-5 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 -------- --------- --------- --------- ------- -------- 21/03 PM 3.1/ 3.6 0.4/ 0.9 1.2/ 1.7 2 None 22/01 AM 3.6/ 4.1 0.9/ 1.4 1.1/ 1.6 2 None 22/04 PM 3.0/ 3.5 0.2/ 0.8 1.2/ 1.7 2-3 None 23/05 AM 6.2/ 6.7 3.5/ 4.0 3.7/ 4.2 6-8 Moderate 24/04 AM 4.0/ 4.5 1.3/ 1.8 1.4/ 1.9 4-5 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 -------- --------- --------- --------- ------- -------- 21/03 PM 2.7/ 3.2 0.8/ 1.3 1.4/ 1.9 2 None 22/03 AM 2.8/ 3.4 0.9/ 1.4 1.2/ 1.7 1-2 None 22/03 PM 2.5/ 3.0 0.5/ 1.0 1.2/ 1.7 1-2 None 23/05 AM 5.0/ 5.5 3.0/ 3.5 3.5/ 4.0 5-7 Minor 24/04 AM 3.0/ 3.5 1.0/ 1.5 1.3/ 1.8 3 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 -------- --------- --------- --------- ------- -------- 21/03 PM 4.0/ 4.5 0.4/ 0.9 1.0/ 1.5 3 None 22/03 AM 4.4/ 4.9 0.8/ 1.3 0.9/ 1.4 3 None 22/04 PM 3.7/ 4.2 0.2/ 0.7 1.0/ 1.5 3 None 23/05 AM 6.6/ 7.1 3.0/ 3.5 3.1/ 3.6 10-13 Moderate 23/05 PM 5.1/ 5.6 1.5/ 2.0 2.3/ 2.8 13-14 Minor 24/05 AM 4.9/ 5.4 1.3/ 1.8 1.3/ 1.8 7-8 Minor

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