Active Weather Alerts
Coastal Flood Advisory
Issued: 7:12 PM Jun. 15, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT TUESDAY... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.9 to 5.1 feet Mean Lower Low Water). * WHERE...Nantucket MA County. * WHEN...Until 2 AM EDT Tuesday. * 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. 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. 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 -------- --------- --------- --------- ------- -------- 16/01 AM 4.7/ 5.2 1.2/ 1.7 0.4/ 0.9 3 Minor 16/02 PM 3.4/ 3.9 -0.2/ 0.2 0.4/ 0.9 2 None 17/02 AM 4.7/ 5.2 1.1/ 1.6 0.4/ 0.9 2 None 17/03 PM 3.2/ 3.7 -0.3/ 0.2 0.2/ 0.8 2 None 18/03 AM 4.5/ 5.0 0.9/ 1.4 0.2/ 0.8 2-3 None &&
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