Active Weather Alerts
Small Craft Advisory
Issued: 11:49 AM Sep. 28, 2026 – National Weather Service
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Southeast winds 10 to 15 kt with gusts up to 25 kt and seas 2 to 4 feet. * WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Coastal Flood Advisory
Issued: 6:07 AM Sep. 28, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (3.1 to 12.5 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...Until midnight EDT tonight. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. 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 -------- --------- --------- --------- ------- -------- 28/01 AM 10.6/11.1 1.0/ 1.5 1.2/ 1.7 8 None 28/01 PM 11.2/11.7 1.6/ 2.0 1.1/ 1.6 7-8 None 29/01 AM 10.1/10.6 0.5/ 1.0 0.7/ 1.1 5 None 29/01 PM 11.0/11.5 1.4/ 1.9 0.8/ 1.3 4 None 30/02 AM 10.1/10.6 0.5/ 1.0 0.8/ 1.3 3-4 None 30/02 PM 11.2/11.7 1.6/ 2.0 0.8/ 1.3 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 -------- --------- --------- --------- ------- -------- 28/01 AM 9.7/10.2 0.2/ 0.7 1.1/ 1.6 6 None 28/01 PM 10.1/10.6 0.6/ 1.1 1.0/ 1.5 5-6 None 29/02 AM 9.3/ 9.8 -0.2/ 0.2 0.9/ 1.4 4 None 29/02 PM 10.2/10.7 0.7/ 1.1 0.9/ 1.4 3 None 30/02 AM 9.2/ 9.7 -0.3/ 0.2 0.9/ 1.4 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 -------- --------- --------- --------- ------- -------- 28/01 AM 11.6/12.1 1.3/ 1.8 1.4/ 1.9 2 None 28/01 PM 12.2/12.7 1.9/ 2.3 1.3/ 1.8 2 None 29/01 AM 11.0/11.5 0.7/ 1.1 0.8/ 1.3 2 None 29/02 PM 11.9/12.4 1.6/ 2.0 0.9/ 1.4 1 None 30/02 AM 10.9/11.4 0.6/ 1.1 0.9/ 1.4 1 None 30/02 PM 11.9/12.4 1.6/ 2.0 0.9/ 1.4 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 -------- --------- --------- --------- ------- -------- 28/01 AM 11.3/11.8 1.4/ 1.9 1.3/ 1.8 2 None 28/01 PM 11.8/12.3 1.9/ 2.3 1.2/ 1.7 2 None 29/01 AM 10.6/11.1 0.7/ 1.1 0.7/ 1.1 1 None 29/02 PM 11.5/12.0 1.6/ 2.0 0.8/ 1.3 1 None 30/02 AM 10.6/11.1 0.7/ 1.1 0.8/ 1.3 1 None 30/02 PM 11.6/12.1 1.7/ 2.2 0.8/ 1.3 1 None 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 -------- --------- --------- --------- ------- -------- 28/01 AM 10.9/11.4 1.0/ 1.5 1.3/ 1.8 5 None 28/01 PM 11.4/11.9 1.5/ 2.0 1.2/ 1.7 4-5 Minor 29/01 AM 10.2/10.7 0.2/ 0.8 0.7/ 1.1 3-4 None 29/02 PM 11.2/11.7 1.3/ 1.8 0.8/ 1.3 3 None 30/02 AM 10.2/10.7 0.2/ 0.8 0.8/ 1.3 2 None 30/02 PM 11.3/11.8 1.4/ 1.9 0.8/ 1.3 2 Minor 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 -------- --------- --------- --------- ------- -------- 28/01 AM 10.5/11.0 0.8/ 1.3 1.1/ 1.6 6-7 None 28/01 PM 11.2/11.7 1.5/ 2.0 1.1/ 1.6 6 None 29/01 AM 10.2/10.7 0.5/ 1.0 0.8/ 1.3 4-5 None 29/02 PM 11.0/11.5 1.3/ 1.8 0.8/ 1.3 3-4 None 30/02 AM 10.1/10.6 0.4/ 0.9 0.8/ 1.3 3 None 30/02 PM 11.1/11.6 1.4/ 1.9 0.8/ 1.3 3 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 -------- --------- --------- --------- ------- -------- 27/09 PM 3.2/ 3.7 1.2/ 1.7 1.1/ 1.6 3 None 28/10 AM 3.7/ 4.2 1.8/ 2.2 1.1/ 1.6 2 None 28/10 PM 2.6/ 3.1 0.6/ 1.1 0.6/ 1.1 2 None 29/11 AM 3.4/ 3.9 1.4/ 1.9 0.7/ 1.1 2 None 29/11 PM 2.6/ 3.1 0.6/ 1.1 0.7/ 1.1 1 None 30/11 AM 3.2/ 3.7 1.3/ 1.8 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 6.5/ 7.0 1.3/ 1.8 1.2/ 1.7 5-6 None 28/02 PM 6.8/ 7.3 1.6/ 2.0 0.9/ 1.4 4-5 None 29/02 AM 5.7/ 6.2 0.6/ 1.1 0.5/ 1.0 4 None 29/02 PM 6.8/ 7.3 1.6/ 2.0 0.7/ 1.1 3 None 30/03 AM 5.7/ 6.2 0.6/ 1.1 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 4.7/ 5.2 0.2/ 0.8 0.9/ 1.4 4-5 None 28/01 PM 5.2/ 5.7 0.8/ 1.3 0.8/ 1.3 4 None 29/02 AM 4.6/ 5.1 0.1/ 0.6 0.7/ 1.1 3 None 29/02 PM 5.2/ 5.7 0.8/ 1.3 0.7/ 1.1 3 None 30/03 AM 4.6/ 5.1 0.1/ 0.6 0.7/ 1.1 3 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 -------- --------- --------- --------- ------- -------- 28/02 AM 4.4/ 4.9 0.6/ 1.1 1.0/ 1.5 3 None 28/02 PM 4.7/ 5.2 0.9/ 1.4 0.8/ 1.3 2 None 29/02 AM 4.0/ 4.5 0.2/ 0.7 0.7/ 1.1 2 None 29/02 PM 4.7/ 5.2 0.9/ 1.4 0.7/ 1.1 2 None 30/03 AM 3.9/ 4.4 0.1/ 0.6 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 11.4/11.9 1.3/ 1.8 1.2/ 1.7 6 None 28/01 PM 11.7/12.2 1.6/ 2.0 1.0/ 1.5 5 None 29/01 AM 10.7/11.2 0.6/ 1.1 0.7/ 1.1 4 None 29/02 PM 11.6/12.1 1.5/ 2.0 0.8/ 1.3 3 None 30/02 AM 10.7/11.2 0.6/ 1.1 0.8/ 1.3 3 None 30/02 PM 11.5/12.0 1.4/ 1.9 0.8/ 1.3 3 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 -------- --------- --------- --------- ------- -------- 28/01 AM 11.8/12.3 1.3/ 1.8 1.3/ 1.8 3-4 None 28/01 PM 12.3/12.8 1.8/ 2.2 1.1/ 1.6 3 None 29/01 AM 11.1/11.6 0.6/ 1.1 0.7/ 1.1 2 None 29/02 PM 12.1/12.6 1.6/ 2.0 0.8/ 1.3 2 None 30/02 AM 11.1/11.6 0.6/ 1.1 0.8/ 1.3 2 None 30/02 PM 12.1/12.6 1.6/ 2.0 0.8/ 1.3 2 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 -------- --------- --------- --------- ------- -------- 28/01 AM 10.1/10.6 -0.2/ 0.2 1.4/ 1.9 3 None 28/01 PM 10.6/11.1 0.2/ 0.8 1.2/ 1.7 2 None 29/01 AM 9.4/ 9.9 -1.0/-0.5 0.8/ 1.3 2 None 29/02 PM 10.3/10.8 0.0/ 0.5 0.9/ 1.4 2 None 30/02 AM 9.4/ 9.9 -1.0/-0.5 0.9/ 1.4 1 None 30/02 PM 10.4/10.9 0.1/ 0.6 0.9/ 1.4 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 -------- --------- --------- --------- ------- -------- 27/09 PM 5.0/ 5.5 0.6/ 1.1 0.9/ 1.4 3 None 28/10 AM 5.7/ 6.2 1.3/ 1.8 1.0/ 1.5 2 None 28/10 PM 4.7/ 5.2 0.2/ 0.8 0.6/ 1.1 1-2 None 29/11 AM 5.4/ 5.9 1.0/ 1.5 0.7/ 1.1 1-2 None 29/11 PM 4.6/ 5.1 0.2/ 0.7 0.7/ 1.1 1 None 30/11 AM 5.2/ 5.7 0.9/ 1.4 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 2.8/ 3.4 0.2/ 0.7 1.0/ 1.5 3-4 None 28/11 AM 3.4/ 3.9 0.7/ 1.1 0.9/ 1.4 3 None 29/02 AM 2.5/ 3.0 -0.2/ 0.2 0.7/ 1.1 3 None 29/12 PM 3.2/ 3.7 0.6/ 1.1 0.7/ 1.1 2 None 30/03 AM 2.5/ 3.0 -0.2/ 0.2 0.7/ 1.1 2 None 30/01 PM 3.4/ 3.9 0.7/ 1.1 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 2.7/ 3.2 0.8/ 1.3 1.1/ 1.6 3 None 28/12 PM 2.8/ 3.4 0.9/ 1.4 1.0/ 1.5 2 None 29/02 AM 2.1/ 2.6 0.1/ 0.6 0.5/ 1.0 2 None 29/01 PM 2.7/ 3.2 0.7/ 1.1 0.7/ 1.1 2 None 30/03 AM 2.2/ 2.7 0.2/ 0.8 0.7/ 1.1 1 None 30/02 PM 2.7/ 3.2 0.7/ 1.1 0.7/ 1.1 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 -------- --------- --------- --------- ------- -------- 28/01 AM 4.2/ 4.7 0.7/ 1.1 1.1/ 1.6 5 None 28/01 PM 4.6/ 5.1 1.0/ 1.5 0.9/ 1.4 4 None 29/02 AM 3.6/ 4.1 0.0/ 0.5 0.5/ 1.0 4 None 29/02 PM 4.6/ 5.1 1.0/ 1.5 0.7/ 1.1 3 None 30/03 AM 3.7/ 4.2 0.2/ 0.7 0.7/ 1.1 3 None &&
Flood Watch
Issued: 5:45 AM Sep. 28, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Massachusetts, including the following areas, Barnstable MA, Central Middlesex MA, Dukes MA, Eastern Essex MA, Eastern Norfolk MA, Eastern Plymouth MA, Nantucket MA, Northern Bristol MA, Northern Middlesex MA, Northern Worcester MA, Southeast Middlesex MA, Southern Bristol MA, Southern Plymouth MA, Southern Worcester MA, Suffolk MA, Western Essex MA, Western Norfolk MA and Western Plymouth MA and Rhode Island, including the following areas, Block Island RI, Bristol RI, Eastern Kent RI, Newport RI, Northwest Providence RI, Southeast Providence RI, Washington RI and Western Kent RI. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Periods of rain will continue across the region through Monday. Additional rainfall amount of up to 1 to 1.5" are possible. Potential for both urban and small river/stream flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. &&
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