Active Weather Alerts
Coastal Flood Advisory
Issued: 9:36 AM May. 22, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 6 PM TO 11 PM EDT THIS EVENING... * WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (3.7 to 12.2 feet Mean Lower Low Water). * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...From 6 PM to 11 PM EDT this 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. 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 -------- --------- --------- --------- ------- -------- 22/08 AM 9.5/10.0 -0.2/ 0.3 0.6/ 1.1 4-6 None 22/08 PM 11.1/11.6 1.5/ 2.0 1.8/ 2.2 8-11 None 23/08 AM 9.7/10.2 0.1/ 0.6 0.7/ 1.1 8-10 None 23/09 PM 10.3/10.8 0.7/ 1.1 0.4/ 0.9 5 None 24/09 AM 9.4/ 9.9 -0.2/ 0.2 0.2/ 0.8 3 None 24/10 PM 10.6/11.1 1.0/ 1.5 0.2/ 0.8 3 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 -------- --------- --------- --------- ------- -------- 22/08 AM 9.3/ 9.8 -0.2/ 0.2 0.7/ 1.1 3-4 None 22/08 PM 10.8/11.3 1.3/ 1.8 1.9/ 2.3 6-7 Minor 23/09 AM 9.4/ 9.9 -0.2/ 0.3 0.6/ 1.1 6-7 None 23/09 PM 9.9/10.4 0.4/ 0.9 0.4/ 0.9 3-4 None 24/10 AM 9.1/ 9.6 -0.5/ 0.0 0.2/ 0.8 2 None 24/10 PM 10.3/10.8 0.8/ 1.3 0.2/ 0.8 2 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 -------- --------- --------- --------- ------- -------- 22/07 AM 10.3/10.8 0.0/ 0.5 0.8/ 1.3 2 None 22/08 PM 12.0/12.5 1.7/ 2.2 2.1/ 2.6 2 None 23/08 AM 10.2/10.7 -0.2/ 0.3 0.6/ 1.1 2 None 23/09 PM 10.9/11.4 0.6/ 1.1 0.4/ 0.9 1 None 24/09 AM 10.1/10.6 -0.2/ 0.2 0.2/ 0.8 1-2 None 24/10 PM 11.3/11.8 1.0/ 1.5 0.2/ 0.8 1 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 -------- --------- --------- --------- ------- -------- 22/07 AM 10.0/10.5 0.1/ 0.6 0.7/ 1.1 2 None 22/08 PM 11.7/12.2 1.8/ 2.2 2.0/ 2.5 2 None 23/08 AM 9.9/10.4 0.0/ 0.5 0.5/ 1.0 2 None 23/09 PM 10.7/11.2 0.8/ 1.3 0.4/ 0.9 1 None 24/09 AM 9.8/10.3 -0.2/ 0.3 0.2/ 0.8 1 None 24/10 PM 11.0/11.5 1.1/ 1.6 0.2/ 0.8 1 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 -------- --------- --------- --------- ------- -------- 22/08 AM 9.7/10.2 0.0/ 0.5 0.7/ 1.1 4-5 None 22/08 PM 11.2/11.7 1.5/ 2.0 1.9/ 2.3 7-8 None 23/08 AM 9.6/10.1 -0.2/ 0.3 0.6/ 1.1 7 None 23/09 PM 10.3/10.8 0.6/ 1.1 0.4/ 0.9 4-5 None 24/10 AM 9.5/10.0 -0.2/ 0.2 0.2/ 0.8 3 None 24/10 PM 10.7/11.2 1.0/ 1.5 0.2/ 0.8 2 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 -------- --------- --------- --------- ------- -------- 22/04 AM 2.5/ 3.0 0.5/ 1.0 0.7/ 1.1 2-3 None 22/06 PM 3.7/ 4.2 1.7/ 2.2 1.7/ 2.2 4 None 23/05 AM 2.0/ 2.5 0.0/ 0.5 0.2/ 0.7 3 None 23/06 PM 2.7/ 3.2 0.8/ 1.3 0.2/ 0.8 2 None 24/06 AM 2.0/ 2.5 0.0/ 0.5 0.2/ 0.7 2 None 24/07 PM 2.8/ 3.4 0.9/ 1.4 0.2/ 0.7 2 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 -------- --------- --------- --------- ------- -------- 22/08 AM 6.8/ 7.3 1.6/ 2.0 0.6/ 1.1 4-5 None 22/08 PM 8.0/ 8.5 2.7/ 3.2 1.8/ 2.2 7-8 None 23/09 AM 6.6/ 7.1 1.4/ 1.9 0.2/ 0.8 6 None 23/09 PM 6.7/ 7.2 1.5/ 2.0 0.2/ 0.7 4 None 24/10 AM 6.5/ 7.0 1.3/ 1.8 0.2/ 0.7 3 None 24/10 PM 7.4/ 7.9 2.2/ 2.7 0.2/ 0.7 2-3 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 -------- --------- --------- --------- ------- -------- 22/08 AM 4.7/ 5.2 0.2/ 0.8 0.7/ 1.1 3-4 None 22/08 PM 6.0/ 6.5 1.5/ 2.0 1.8/ 2.2 6-7 None 23/10 AM 4.2/ 4.7 -0.2/ 0.2 0.2/ 0.8 5 None 23/09 PM 4.9/ 5.4 0.4/ 0.9 0.2/ 0.8 3 None 24/10 AM 4.2/ 4.7 -0.3/ 0.2 0.2/ 0.7 3 None 24/11 PM 5.2/ 5.7 0.7/ 1.1 0.2/ 0.7 2 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 -------- --------- --------- --------- ------- -------- 22/08 AM 10.0/10.5 -0.2/ 0.3 0.5/ 1.0 4-5 None 22/08 PM 11.6/12.1 1.5/ 2.0 1.7/ 2.2 7-8 None 23/08 AM 10.3/10.8 0.2/ 0.7 0.7/ 1.1 6-7 None 23/09 PM 10.9/11.4 0.8/ 1.3 0.4/ 0.9 4 None 24/09 AM 10.0/10.5 -0.2/ 0.3 0.2/ 0.8 3 None 24/10 PM 11.2/11.7 1.1/ 1.6 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 -------- --------- --------- --------- ------- -------- 22/08 AM 10.0/10.5 -0.6/-0.1 0.5/ 1.0 3 None 22/08 PM 11.7/12.2 1.2/ 1.7 1.7/ 2.2 5 None 23/09 AM 10.4/10.9 -0.2/ 0.3 0.7/ 1.1 4 None 23/09 PM 10.9/11.4 0.4/ 0.9 0.4/ 0.9 2 None 24/10 AM 10.1/10.6 -0.5/ 0.0 0.2/ 0.8 2 None 24/10 PM 11.3/11.8 0.8/ 1.3 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 22/08 AM 9.4/ 9.9 -1.0/-0.5 0.7/ 1.1 3 None 22/08 PM 11.1/11.6 0.8/ 1.3 2.0/ 2.5 4-5 None 23/08 AM 9.4/ 9.9 -1.0/-0.5 0.6/ 1.1 3-4 None 23/09 PM 10.1/10.6 -0.2/ 0.2 0.4/ 0.9 2 None 24/09 AM 9.3/ 9.8 -1.1/-0.6 0.2/ 0.8 1-2 None 24/10 PM 10.5/11.0 0.2/ 0.7 0.2/ 0.8 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 -------- --------- --------- --------- ------- -------- 22/04 AM 4.2/ 4.7 -0.2/ 0.3 0.7/ 1.1 2-3 None 22/05 PM 5.1/ 5.6 0.7/ 1.1 0.9/ 1.4 4 None 23/04 AM 4.2/ 4.7 -0.2/ 0.2 0.8/ 1.3 3 None 23/06 PM 5.1/ 5.6 0.7/ 1.1 0.5/ 1.0 1-2 None 24/06 AM 4.2/ 4.7 -0.2/ 0.2 0.2/ 0.8 1 None 24/07 PM 5.2/ 5.7 0.8/ 1.3 0.2/ 0.8 1 None Edgartown MLLW Categories - Minor 4.0 ft, Moderate 5.0 ft, Major 7.0 ft MHHW Categories - Minor 3.2 ft, Moderate 4.2 ft, Major 6.2 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/08 AM 3.1/ 3.6 2.2/ 2.7 0.9/ 1.4 3-4 None 22/06 PM 4.0/ 4.5 3.2/ 3.7 1.8/ 2.2 5-6 Minor 23/09 AM 2.2/ 2.7 1.4/ 1.9 0.1/ 0.6 3-4 None 23/09 PM 2.8/ 3.4 2.1/ 2.6 0.2/ 0.7 3 None 24/10 AM 2.2/ 2.7 1.4/ 1.9 0.1/ 0.6 3 None 24/10 PM 3.0/ 3.5 2.2/ 2.7 0.1/ 0.6 2 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 -------- --------- --------- --------- ------- -------- 22/08 AM 2.5/ 3.0 0.5/ 1.0 0.9/ 1.4 3 None 22/06 PM 3.5/ 4.0 1.5/ 2.0 1.8/ 2.2 4 None 23/09 AM 1.8/ 2.2 -0.2/ 0.2 0.2/ 0.7 2-3 None 23/09 PM 2.2/ 2.7 0.2/ 0.7 0.2/ 0.7 2 None 24/10 AM 1.7/ 2.2 -0.3/ 0.2 0.2/ 0.7 2 None 24/09 PM 2.2/ 2.7 0.2/ 0.8 0.2/ 0.7 2 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 -------- --------- --------- --------- ------- -------- 22/08 AM 4.0/ 4.5 0.4/ 0.9 0.7/ 1.1 4-5 None 22/08 PM 5.2/ 5.7 1.6/ 2.0 1.7/ 2.2 6-7 Minor 23/09 AM 3.5/ 4.0 -0.2/ 0.3 0.2/ 0.8 5-6 None 23/09 PM 4.0/ 4.5 0.4/ 0.9 0.2/ 0.7 4 None 24/10 AM 3.2/ 3.7 -0.5/ 0.0 0.1/ 0.6 3 None 24/10 PM 4.0/ 4.5 0.5/ 1.0 0.1/ 0.6 3 None &&
Gale Warning
Issued: 6:17 AM May. 22, 2025 – National Weather Service
...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 11 PM EDT THIS EVENING... * WHAT...East winds 20 to 30 kt with gusts up to 45 kt and seas 4 to 7 feet expected. * WHERE...Portions of Massachusetts coastal waters and Rhode Island coastal waters. * WHEN...From 9 AM this morning to 11 PM EDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Wind Advisory
Issued: 6:13 AM May. 22, 2025 – National Weather Service
...WIND ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM EDT THIS EVENING... * WHAT...East winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Barnstable, Dukes, and Nantucket Counties. * WHEN...From 11 AM this morning to 11 PM EDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and some power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. &&
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