WHUS41 KBOX 220817 CFWBOX URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service Boston/Norton MA 317 AM EST Sun Feb 22 2026 MAZ019-022>024-222130- /O.NEW.KBOX.CF.A.0003.260223T1800Z-260224T0100Z/ /O.CON.KBOX.CF.W.0002.260223T0600Z-260223T1200Z/ Eastern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA- 317 AM EST Sun Feb 22 2026 ...COASTAL FLOOD WARNING REMAINS IN EFFECT FROM 1 AM TO 7 AM EST MONDAY... ...COASTAL FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... * WHAT...For the Coastal Flood Warning, 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). For the Coastal Flood Watch, one to two feet of inundation above ground level possible in low-lying areas near shorelines and tidal waterways (3.6 to 13.7 feet Mean Lower Low Water). * WHERE...Eastern Plymouth, Barnstable, Dukes and Nantucket Counties. * WHEN...For the Coastal Flood Warning, from 1 AM to 7 AM EST Monday. For the Coastal Flood Watch, from Monday afternoon through Monday evening. * 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 -------- --------- --------- --------- ------- -------- 22/03 AM 10.7/11.2 0.8/ 1.3 1.0/ 1.5 2 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 4-8 Minor 23/04 PM 12.0/12.5 2.1/ 2.6 3.2/ 3.7 11-12 Minor 24/04 AM 11.4/11.9 1.5/ 2.0 1.4/ 1.9 8-10 Minor 24/05 PM 9.0/ 9.5 -1.0/-0.5 0.6/ 1.1 3-4 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 -------- --------- --------- --------- ------- -------- 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 5-9 Minor 23/03 PM 12.0/12.5 2.2/ 2.7 3.4/ 3.9 14-16 Minor 24/04 AM 11.4/11.9 1.7/ 2.2 1.4/ 1.9 9-11 Minor 24/05 PM 9.1/ 9.6 -0.7/-0.2 0.7/ 1.1 4-5 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 -------- --------- --------- --------- ------- -------- 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 3-5 None 23/01 PM 3.7/ 4.2 1.7/ 2.2 2.3/ 2.8 6 None 24/01 AM 3.4/ 3.9 1.4/ 1.9 1.5/ 2.0 3-4 None 24/01 PM 1.8/ 2.2 -0.2/ 0.2 0.6/ 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 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 -------- --------- --------- --------- ------- -------- 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 7-11 None 23/04 PM 7.2/ 7.7 2.0/ 2.5 2.7/ 3.2 14-15 None 24/04 AM 6.9/ 7.4 1.7/ 2.2 1.4/ 1.9 9-11 None 24/05 PM 5.1/ 5.6 -0.2/ 0.3 0.8/ 1.3 4-5 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 -------- --------- --------- --------- ------- -------- 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 6-10 None 23/04 PM 5.2/ 5.7 0.8/ 1.3 1.9/ 2.3 12 None 24/05 AM 6.2/ 6.7 1.7/ 2.2 1.6/ 2.0 7-9 None 24/06 PM 4.0/ 4.5 -0.5/ 0.0 0.7/ 1.1 4 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 -------- --------- --------- --------- ------- -------- 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 2-3 None 23/04 AM 6.7/ 7.2 2.8/ 3.4 3.0/ 3.5 4-7 Moderate 23/05 PM 6.2/ 6.7 2.3/ 2.8 3.4/ 3.9 7 Minor 24/05 AM 5.0/ 5.5 1.2/ 1.7 1.2/ 1.7 4-5 Minor 24/06 PM 3.1/ 3.6 -0.8/-0.2 0.4/ 0.9 2-3 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 -------- --------- --------- --------- ------- -------- 22/03 PM 10.5/11.0 0.4/ 0.9 0.9/ 1.4 2-3 None 23/03 AM 12.6/13.1 2.5/ 3.0 2.2/ 2.7 6-10 None 23/03 PM 12.3/12.8 2.2/ 2.7 3.5/ 4.0 16-17 None 24/04 AM 11.8/12.3 1.7/ 2.2 1.6/ 2.0 10-12 None 24/05 PM 9.4/ 9.9 -0.8/-0.2 0.8/ 1.3 4-5 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 -------- --------- --------- --------- ------- -------- 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 4-7 Minor 23/03 PM 13.5/14.0 3.0/ 3.5 4.2/ 4.7 9-10 Minor 24/04 AM 12.6/13.1 2.1/ 2.6 1.8/ 2.2 6-8 None 24/05 PM 10.1/10.6 -0.5/ 0.0 1.0/ 1.5 3-4 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 -------- --------- --------- --------- ------- -------- 22/03 AM 11.1/11.6 0.8/ 1.3 2.2/ 2.7 1-2 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 3-6 Minor 23/04 PM 12.0/12.5 1.7/ 2.2 4.0/ 4.5 8-9 Minor 24/04 AM 11.0/11.5 0.7/ 1.1 1.9/ 2.3 6-7 None 24/04 PM 8.4/ 8.9 -2.0/-1.5 1.0/ 1.5 3-4 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 -------- --------- --------- --------- ------- -------- 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 3-4 None 23/01 PM 5.4/ 5.9 1.0/ 1.5 2.1/ 2.6 4-5 None 24/02 AM 5.2/ 5.7 0.8/ 1.3 1.3/ 1.8 3-4 None 24/01 PM 3.4/ 3.9 -1.1/-0.6 0.2/ 0.8 2 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 -------- --------- --------- --------- ------- -------- 22/03 AM 3.5/ 4.0 0.8/ 1.3 1.0/ 1.5 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 24/05 PM 2.2/ 2.7 -0.6/-0.1 0.5/ 1.0 3 None 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 -------- --------- --------- --------- ------- -------- 22/03 AM 2.8/ 3.4 0.9/ 1.4 1.2/ 1.7 1 None 22/03 PM 2.5/ 3.0 0.5/ 1.0 1.2/ 1.7 2 None 23/05 AM 5.0/ 5.5 3.0/ 3.5 3.5/ 4.0 5-6 Minor 24/04 AM 3.0/ 3.5 1.0/ 1.5 1.3/ 1.8 3-4 None 24/04 PM 1.8/ 2.2 -0.2/ 0.2 0.7/ 1.1 2-3 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 -------- --------- --------- --------- ------- -------- 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 8-11 Moderate 23/04 PM 5.2/ 5.7 1.6/ 2.0 2.6/ 3.1 11-12 Minor 24/05 AM 4.9/ 5.4 1.3/ 1.8 1.3/ 1.8 7-8 Minor 24/06 PM 3.1/ 3.6 -0.6/-0.1 0.5/ 1.0 4-5 None && $$ MAZ007-015-016-222130- /O.UPG.KBOX.CF.A.0002.260223T0600Z-260224T1200Z/ /O.NEW.KBOX.CF.Y.0002.260223T0600Z-260223T1200Z/ Eastern Essex MA-Suffolk MA-Eastern Norfolk MA- 317 AM EST Sun Feb 22 2026 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 7 AM EST MONDAY... * WHAT...Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (11.3 to 13.2 feet Mean Lower Low Water). * WHERE...Eastern Essex, Suffolk and Eastern Norfolk Counties. * WHEN...From 1 AM to 7 AM EST Monday. * IMPACTS...Shallow pockets of flooding less than one foot deep affects the lowest lying areas along the coast, including Morrissey Boulevard in Boston. Most roads remain passable. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport. Rough surf will cause flooding on some coastal roads around the time of high tide due to splashover. 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 -------- --------- --------- --------- ------- -------- 22/03 PM 9.7/10.2 0.1/ 0.6 0.9/ 1.4 3 None 23/03 AM 11.9/12.4 2.2/ 2.7 2.1/ 2.6 6-11 Minor 23/03 PM 11.0/11.5 1.4/ 1.9 2.7/ 3.2 18-19 None 24/04 AM 10.9/11.4 1.3/ 1.8 1.2/ 1.7 9 None 24/04 PM 8.5/ 9.0 -1.1/-0.7 0.6/ 1.1 4-5 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 -------- --------- --------- --------- ------- -------- 22/03 AM 9.5/10.0 0.0/ 0.5 0.7/ 1.1 2 None 22/03 PM 9.0/ 9.5 -0.6/-0.1 0.9/ 1.4 2 None 23/04 AM 11.1/11.6 1.6/ 2.0 2.3/ 2.8 5-10 Minor 23/04 PM 10.1/10.6 0.6/ 1.1 2.3/ 2.8 12-13 None 24/04 AM 10.0/10.5 0.5/ 1.0 1.2/ 1.7 6-8 None 24/05 PM 7.8/ 8.4 -1.7/-1.2 0.5/ 1.0 3 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 -------- --------- --------- --------- ------- -------- 22/03 PM 10.5/11.0 0.2/ 0.7 1.0/ 1.5 2 None 23/03 AM 13.0/13.5 2.7/ 3.2 2.6/ 3.1 2 Minor 23/03 PM 11.7/12.2 1.4/ 1.9 2.7/ 3.2 2 None 24/04 AM 11.4/11.9 1.1/ 1.6 1.2/ 1.7 2 None 24/04 PM 9.2/ 9.7 -1.1/-0.7 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 22/02 PM 10.3/10.8 0.4/ 0.9 1.0/ 1.5 1-2 None 23/03 AM 12.6/13.1 2.7/ 3.2 2.3/ 2.8 2 Minor 23/03 PM 11.6/12.1 1.7/ 2.2 2.7/ 3.2 2 None 24/04 AM 11.1/11.6 1.2/ 1.7 1.1/ 1.6 2 None 24/04 PM 8.8/ 9.3 -1.1/-0.7 0.5/ 1.0 2 None && $$