Active Weather Alerts
Coastal Flood Advisory
Issued: 5:46 PM Sep. 5, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 PM EDT THIS EVENING... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (2.9 to 11.4 feet Mean Lower Low Water). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 11 PM EDT this evening. For the High Rip Current Risk, from late tonight through Sunday evening. * 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. Rip currents can sweep even the best swimmers away from shore into deeper water. 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. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && && Time of high total tides are approximate to the nearest hour. 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 -------- --------- --------- --------- ------- -------- 05/04 PM 3.1/ 3.6 1.1/ 1.6 0.7/ 1.1 2 None 06/04 AM 2.5/ 3.0 0.5/ 1.0 0.8/ 1.3 1 None 06/05 PM 3.2/ 3.7 1.3/ 1.8 0.8/ 1.3 1 None 07/05 AM 2.3/ 2.8 0.4/ 0.9 0.6/ 1.1 1 None 07/06 PM 3.2/ 3.7 1.2/ 1.7 0.7/ 1.1 1 None 08/06 AM 2.1/ 2.6 0.1/ 0.6 0.1/ 0.6 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 -------- --------- --------- --------- ------- -------- 05/07 PM 6.4/ 6.9 1.2/ 1.7 0.8/ 1.3 3 None 06/08 AM 5.2/ 5.7 0.0/ 0.5 0.9/ 1.4 3 None 06/08 PM 6.2/ 6.8 1.1/ 1.6 0.7/ 1.1 3 None 07/09 AM 5.1/ 5.6 -0.2/ 0.3 0.7/ 1.1 3 None 07/09 PM 5.9/ 6.4 0.7/ 1.1 0.2/ 0.8 2 None 08/10 AM 5.0/ 5.5 -0.2/ 0.2 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 05/07 PM 5.4/ 5.9 0.9/ 1.4 0.7/ 1.1 2 None 06/08 AM 4.2/ 4.7 -0.2/ 0.2 0.8/ 1.3 3 None 06/08 PM 5.5/ 6.0 1.0/ 1.5 0.8/ 1.3 2-3 None 07/10 AM 4.2/ 4.7 -0.2/ 0.2 0.7/ 1.1 2 None 07/09 PM 5.1/ 5.6 0.6/ 1.1 0.4/ 0.9 2 None 08/10 AM 3.9/ 4.4 -0.7/-0.2 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/07 PM 4.7/ 5.2 1.0/ 1.5 0.7/ 1.1 1-2 Minor 06/08 AM 3.7/ 4.2 -0.2/ 0.3 0.8/ 1.3 2 None 06/08 PM 5.0/ 5.5 1.2/ 1.7 0.8/ 1.3 1 Minor 07/10 AM 3.7/ 4.2 -0.2/ 0.3 0.7/ 1.1 1 None 07/09 PM 4.6/ 5.1 0.8/ 1.3 0.4/ 0.9 1 None 08/10 AM 3.4/ 3.9 -0.5/ 0.0 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/06 PM 10.7/11.2 0.6/ 1.1 0.7/ 1.1 2 None 06/07 AM 9.3/ 9.8 -0.9/-0.4 0.8/ 1.3 3 None 06/08 PM 10.8/11.3 0.7/ 1.1 0.7/ 1.1 3 None 07/08 AM 9.3/ 9.8 -0.9/-0.4 0.7/ 1.1 2 None 07/09 PM 10.5/11.0 0.4/ 0.9 0.2/ 0.8 2 None 08/09 AM 9.2/ 9.7 -1.0/-0.5 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 05/07 PM 11.2/11.7 0.7/ 1.1 0.7/ 1.1 2 None 06/07 AM 9.9/10.4 -0.7/-0.2 0.9/ 1.4 2 None 06/08 PM 11.3/11.8 0.8/ 1.3 0.7/ 1.1 2 None 07/08 AM 9.9/10.4 -0.7/-0.2 0.8/ 1.3 2 None 07/09 PM 11.2/11.7 0.7/ 1.1 0.2/ 0.8 1 None 08/09 AM 9.9/10.4 -0.7/-0.2 0.4/ 0.9 1 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 -------- --------- --------- --------- ------- -------- 05/06 PM 9.6/10.1 -0.8/-0.2 0.8/ 1.3 1-2 None 06/07 AM 8.4/ 8.9 -2.0/-1.5 1.0/ 1.5 2 None 06/08 PM 9.7/10.2 -0.7/-0.2 0.8/ 1.3 1-2 None 07/08 AM 8.3/ 8.8 -2.0/-1.6 0.8/ 1.3 1 None 07/09 PM 9.4/ 9.9 -1.0/-0.5 0.2/ 0.8 1 None 08/09 AM 8.3/ 8.8 -2.0/-1.6 0.4/ 0.9 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 -------- --------- --------- --------- ------- -------- 05/04 PM 5.0/ 5.5 0.6/ 1.1 0.7/ 1.1 2 None 06/04 AM 4.2/ 4.7 -0.2/ 0.3 0.8/ 1.3 1 None 06/05 PM 5.2/ 5.7 0.8/ 1.3 0.9/ 1.4 1 None 07/05 AM 4.2/ 4.7 -0.2/ 0.2 0.6/ 1.1 1 None 07/06 PM 5.2/ 5.7 0.8/ 1.3 0.8/ 1.3 1 None 08/07 AM 4.0/ 4.5 -0.5/ 0.0 0.1/ 0.6 1 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 -------- --------- --------- --------- ------- -------- 05/07 PM 3.6/ 4.1 0.9/ 1.4 0.8/ 1.3 2 None 06/08 AM 2.6/ 3.1 -0.2/ 0.3 0.8/ 1.3 2 None 06/08 PM 3.6/ 4.1 0.9/ 1.4 0.8/ 1.3 1-2 None 07/09 AM 2.6/ 3.1 -0.2/ 0.3 0.6/ 1.1 1-2 None 07/09 PM 3.2/ 3.7 0.6/ 1.1 0.4/ 0.9 1 None 08/10 AM 2.2/ 2.7 -0.5/ 0.0 0.2/ 0.7 1 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 -------- --------- --------- --------- ------- -------- 05/07 PM 2.7/ 3.2 0.7/ 1.1 0.8/ 1.3 1-2 None 06/08 AM 2.2/ 2.7 0.2/ 0.8 0.8/ 1.3 1-2 None 06/07 PM 2.7/ 3.2 0.8/ 1.3 0.8/ 1.3 1 None 07/08 AM 2.2/ 2.7 0.2/ 0.7 0.6/ 1.1 1 None 07/08 PM 2.3/ 2.8 0.4/ 0.9 0.5/ 1.0 1 None 08/09 AM 1.9/ 2.3 -0.2/ 0.3 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/08 PM 4.7/ 5.2 1.2/ 1.7 0.8/ 1.3 2-3 Minor 06/08 AM 3.6/ 4.1 0.0/ 0.5 0.8/ 1.3 3 None 06/08 PM 4.7/ 5.2 1.1/ 1.6 0.8/ 1.3 2-3 None 07/09 AM 3.6/ 4.1 0.0/ 0.5 0.7/ 1.1 2-3 None 07/10 PM 4.2/ 4.7 0.7/ 1.1 0.2/ 0.8 2 None 08/10 AM 3.2/ 3.7 -0.5/ 0.0 0.2/ 0.7 2 None &&
Rip Current Statement
Issued: 5:46 PM Sep. 5, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 PM EDT THIS EVENING... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (2.9 to 11.4 feet Mean Lower Low Water). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 11 PM EDT this evening. For the High Rip Current Risk, from late tonight through Sunday evening. * 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. Rip currents can sweep even the best swimmers away from shore into deeper water. 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. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && && Time of high total tides are approximate to the nearest hour. 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 -------- --------- --------- --------- ------- -------- 05/04 PM 3.1/ 3.6 1.1/ 1.6 0.7/ 1.1 2 None 06/04 AM 2.5/ 3.0 0.5/ 1.0 0.8/ 1.3 1 None 06/05 PM 3.2/ 3.7 1.3/ 1.8 0.8/ 1.3 1 None 07/05 AM 2.3/ 2.8 0.4/ 0.9 0.6/ 1.1 1 None 07/06 PM 3.2/ 3.7 1.2/ 1.7 0.7/ 1.1 1 None 08/06 AM 2.1/ 2.6 0.1/ 0.6 0.1/ 0.6 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 -------- --------- --------- --------- ------- -------- 05/07 PM 6.4/ 6.9 1.2/ 1.7 0.8/ 1.3 3 None 06/08 AM 5.2/ 5.7 0.0/ 0.5 0.9/ 1.4 3 None 06/08 PM 6.2/ 6.8 1.1/ 1.6 0.7/ 1.1 3 None 07/09 AM 5.1/ 5.6 -0.2/ 0.3 0.7/ 1.1 3 None 07/09 PM 5.9/ 6.4 0.7/ 1.1 0.2/ 0.8 2 None 08/10 AM 5.0/ 5.5 -0.2/ 0.2 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 05/07 PM 5.4/ 5.9 0.9/ 1.4 0.7/ 1.1 2 None 06/08 AM 4.2/ 4.7 -0.2/ 0.2 0.8/ 1.3 3 None 06/08 PM 5.5/ 6.0 1.0/ 1.5 0.8/ 1.3 2-3 None 07/10 AM 4.2/ 4.7 -0.2/ 0.2 0.7/ 1.1 2 None 07/09 PM 5.1/ 5.6 0.6/ 1.1 0.4/ 0.9 2 None 08/10 AM 3.9/ 4.4 -0.7/-0.2 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/07 PM 4.7/ 5.2 1.0/ 1.5 0.7/ 1.1 1-2 Minor 06/08 AM 3.7/ 4.2 -0.2/ 0.3 0.8/ 1.3 2 None 06/08 PM 5.0/ 5.5 1.2/ 1.7 0.8/ 1.3 1 Minor 07/10 AM 3.7/ 4.2 -0.2/ 0.3 0.7/ 1.1 1 None 07/09 PM 4.6/ 5.1 0.8/ 1.3 0.4/ 0.9 1 None 08/10 AM 3.4/ 3.9 -0.5/ 0.0 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/06 PM 10.7/11.2 0.6/ 1.1 0.7/ 1.1 2 None 06/07 AM 9.3/ 9.8 -0.9/-0.4 0.8/ 1.3 3 None 06/08 PM 10.8/11.3 0.7/ 1.1 0.7/ 1.1 3 None 07/08 AM 9.3/ 9.8 -0.9/-0.4 0.7/ 1.1 2 None 07/09 PM 10.5/11.0 0.4/ 0.9 0.2/ 0.8 2 None 08/09 AM 9.2/ 9.7 -1.0/-0.5 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 05/07 PM 11.2/11.7 0.7/ 1.1 0.7/ 1.1 2 None 06/07 AM 9.9/10.4 -0.7/-0.2 0.9/ 1.4 2 None 06/08 PM 11.3/11.8 0.8/ 1.3 0.7/ 1.1 2 None 07/08 AM 9.9/10.4 -0.7/-0.2 0.8/ 1.3 2 None 07/09 PM 11.2/11.7 0.7/ 1.1 0.2/ 0.8 1 None 08/09 AM 9.9/10.4 -0.7/-0.2 0.4/ 0.9 1 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 -------- --------- --------- --------- ------- -------- 05/06 PM 9.6/10.1 -0.8/-0.2 0.8/ 1.3 1-2 None 06/07 AM 8.4/ 8.9 -2.0/-1.5 1.0/ 1.5 2 None 06/08 PM 9.7/10.2 -0.7/-0.2 0.8/ 1.3 1-2 None 07/08 AM 8.3/ 8.8 -2.0/-1.6 0.8/ 1.3 1 None 07/09 PM 9.4/ 9.9 -1.0/-0.5 0.2/ 0.8 1 None 08/09 AM 8.3/ 8.8 -2.0/-1.6 0.4/ 0.9 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 -------- --------- --------- --------- ------- -------- 05/04 PM 5.0/ 5.5 0.6/ 1.1 0.7/ 1.1 2 None 06/04 AM 4.2/ 4.7 -0.2/ 0.3 0.8/ 1.3 1 None 06/05 PM 5.2/ 5.7 0.8/ 1.3 0.9/ 1.4 1 None 07/05 AM 4.2/ 4.7 -0.2/ 0.2 0.6/ 1.1 1 None 07/06 PM 5.2/ 5.7 0.8/ 1.3 0.8/ 1.3 1 None 08/07 AM 4.0/ 4.5 -0.5/ 0.0 0.1/ 0.6 1 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 -------- --------- --------- --------- ------- -------- 05/07 PM 3.6/ 4.1 0.9/ 1.4 0.8/ 1.3 2 None 06/08 AM 2.6/ 3.1 -0.2/ 0.3 0.8/ 1.3 2 None 06/08 PM 3.6/ 4.1 0.9/ 1.4 0.8/ 1.3 1-2 None 07/09 AM 2.6/ 3.1 -0.2/ 0.3 0.6/ 1.1 1-2 None 07/09 PM 3.2/ 3.7 0.6/ 1.1 0.4/ 0.9 1 None 08/10 AM 2.2/ 2.7 -0.5/ 0.0 0.2/ 0.7 1 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 -------- --------- --------- --------- ------- -------- 05/07 PM 2.7/ 3.2 0.7/ 1.1 0.8/ 1.3 1-2 None 06/08 AM 2.2/ 2.7 0.2/ 0.8 0.8/ 1.3 1-2 None 06/07 PM 2.7/ 3.2 0.8/ 1.3 0.8/ 1.3 1 None 07/08 AM 2.2/ 2.7 0.2/ 0.7 0.6/ 1.1 1 None 07/08 PM 2.3/ 2.8 0.4/ 0.9 0.5/ 1.0 1 None 08/09 AM 1.9/ 2.3 -0.2/ 0.3 0.2/ 0.7 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 -------- --------- --------- --------- ------- -------- 05/08 PM 4.7/ 5.2 1.2/ 1.7 0.8/ 1.3 2-3 Minor 06/08 AM 3.6/ 4.1 0.0/ 0.5 0.8/ 1.3 3 None 06/08 PM 4.7/ 5.2 1.1/ 1.6 0.8/ 1.3 2-3 None 07/09 AM 3.6/ 4.1 0.0/ 0.5 0.7/ 1.1 2-3 None 07/10 PM 4.2/ 4.7 0.7/ 1.1 0.2/ 0.8 2 None 08/10 AM 3.2/ 3.7 -0.5/ 0.0 0.2/ 0.7 2 None &&
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