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197 WHUS41 KBOX 051746CFWBOXCoastal Hazard MessageNational Weather Service Boston/Norton MA146 PM EDT Sat Sep 5 2026MAZ022>024-061200-/O.NEW.KBOX.CF.Y.0006.260905T2100Z-260906T0300Z//O.CON.KBOX.RP.S.0012.260906T0600Z-260907T0000Z/Barnstable MA-Dukes MA-Nantucket MA-146 PM EDT Sat Sep 5 2026...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO11 PM EDT THIS EVENING......HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM LATE TONIGHTTHROUGH 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 beclosed. Do not drive around barricades or through water ofunknown depth. Take the necessary actions to protect flood-proneproperty.Swim near a lifeguard. If caught in a rip current, relax andfloat. Don't swim against the current. If able, swim in adirection following the shoreline. If unable to escape, face theshore and call or wave for help.&&&&Time of high total tides are approximate to the nearest hour.Buzzards Bay at Woods HoleMLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ftMHHW 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 NoneChatham MA - East CoastMLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ftMHHW 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 NoneChatham - South sideMLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ftMHHW 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 NoneHyannis HarborMLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ftMHHW 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 NoneProvincetown HarborMLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ftMHHW 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 NoneDennis - Sesuit HarborMLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ftMHHW 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 NoneSandwich HarborMLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ftMHHW 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 NoneWings NeckMLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ftMHHW 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 NoneEdgartownMLLW Categories - Minor 4.0 ft, Moderate 5.0 ft, Major 7.0 ftMHHW 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 NoneVineyard HavenMLLW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ftMHHW 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 NoneNantucket HarborMLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ftMHHW 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&&$$MAZ007-014>016-019-061200-/O.CON.KBOX.RP.S.0012.260906T0600Z-260907T0000Z/Eastern Essex MA-Southeast Middlesex MA-Suffolk MA-Eastern Norfolk MA-Eastern Plymouth MA-146 PM EDT Sat Sep 5 2026...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM LATE TONIGHTTHROUGH SUNDAY EVENING...* WHAT...Dangerous rip currents expected.* WHERE...Eastern Essex MA, Southeast Middlesex MA, Suffolk MA, Eastern Norfolk MA and Eastern Plymouth MA Counties.* WHEN...From late tonight through Sunday evening.* IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.PRECAUTIONARY/PREPAREDNESS ACTIONS...Swim near a lifeguard. If caught in a rip current, relax andfloat. Don't swim against the current. If able, swim in adirection following the shoreline. If unable to escape, face theshore and call or wave for help.&&$$