Active Weather Alerts
Coastal Flood Advisory
Issued: 6:02 PM Jan. 31, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 AM SUNDAY TO 2 PM EST MONDAY... * WHAT...One to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (10.8 to 12.7 feet Mean Lower Low Water). * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA and Eastern Plymouth MA Counties. * WHEN...Multiple high tide cycles Sunday morning into Monday afternoon. * IMPACTS...Shallow pockets of flooding less than one foot deep affects the lowest lying areas along the coast, including Morrissey Boulevard in Boston. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport. Rough surf will cause flooding on some coastal roads around the time of high tide due to splashover. * ADDITIONAL DETAILS...Sub-freezing temperatures and cold road surfaces may allow for some of the storm surge to freeze. This would result in prolonged issues on those vulnerable roadways and also delay drainage. 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 -------- --------- --------- --------- ------- -------- 31/10 PM 8.7/ 9.2 -1.0/-0.5 0.1/ 0.6 1-3 None 01/10 AM 11.6/12.1 2.0/ 2.5 1.3/ 1.8 5-7 Minor 01/11 PM 11.2/11.7 1.6/ 2.0 2.2/ 2.7 10 None 02/11 AM 12.0/12.5 2.3/ 2.8 1.6/ 2.0 7-8 Minor 03/12 AM 9.8/10.3 0.2/ 0.7 0.7/ 1.1 4-5 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 -------- --------- --------- --------- ------- -------- 31/10 PM 7.8/ 8.3 -1.8/-1.3 0.1/ 0.6 1-3 None 01/11 AM 10.4/10.9 0.9/ 1.4 1.1/ 1.6 3-5 None 01/11 PM 10.3/10.8 0.8/ 1.3 2.2/ 2.7 6 None 02/11 AM 10.6/11.1 1.1/ 1.6 1.4/ 1.9 5 None 03/12 AM 8.9/ 9.4 -0.7/-0.2 0.7/ 1.1 3-4 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 -------- --------- --------- --------- ------- -------- 31/10 PM 9.5/10.0 -0.9/-0.4 0.2/ 0.7 1-2 None 01/10 AM 12.3/12.8 2.0/ 2.5 1.4/ 1.9 2 Minor 01/11 PM 11.8/12.3 1.5/ 2.0 2.2/ 2.7 2 None 02/11 AM 12.5/13.0 2.2/ 2.7 1.5/ 2.0 2 Minor 03/12 AM 10.4/10.9 0.1/ 0.6 0.6/ 1.1 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 -------- --------- --------- --------- ------- -------- 31/10 PM 9.3/ 9.8 -0.7/-0.2 0.1/ 0.6 1-2 None 01/10 AM 12.2/12.7 2.2/ 2.7 1.4/ 1.9 2 None 01/11 PM 11.8/12.3 1.9/ 2.3 2.2/ 2.7 2 None 02/11 AM 12.4/12.9 2.5/ 3.0 1.5/ 2.0 2 Minor 03/12 AM 10.3/10.8 0.4/ 0.9 0.5/ 1.0 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 -------- --------- --------- --------- ------- -------- 31/10 PM 9.2/ 9.7 -0.8/-0.2 0.2/ 0.8 1-3 None 01/10 AM 12.2/12.7 2.2/ 2.7 1.6/ 2.0 3-7 Minor 01/11 PM 11.8/12.3 1.9/ 2.3 2.6/ 3.1 8 Minor 02/11 AM 12.3/12.8 2.3/ 2.8 1.6/ 2.0 6 Minor 03/12 AM 10.3/10.8 0.4/ 0.9 0.8/ 1.3 4 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 -------- --------- --------- --------- ------- -------- 31/10 PM 9.1/ 9.6 -0.7/-0.2 0.2/ 0.7 1-2 None 01/11 AM 12.0/12.5 2.2/ 2.7 1.4/ 1.9 4-7 Minor 01/11 PM 11.8/12.3 2.1/ 2.6 2.5/ 3.0 9 Minor 02/11 AM 12.2/12.7 2.5/ 3.0 1.5/ 2.0 7-8 Minor 03/12 AM 10.2/10.7 0.5/ 1.0 0.7/ 1.1 4-5 None &&
Gale Warning
Issued: 4:47 PM Jan. 31, 2026 – National Weather Service
...GALE WARNING REMAINS IN EFFECT FROM 7 AM SUNDAY TO 1 AM EST MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 35 kt and waves around 2 feet expected. * WHERE...Boston Harbor. * WHEN...From 7 AM Sunday to 1 AM EST Monday. * IMPACTS...Strong winds will cause hazardous waves 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. &&
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