National Weather ServiceMassachusettsCoastal Flood AdvisoryArchive to October 1, 2026
Coastal Flood Advisories in Massachusetts
The National Weather Service issued 10 coastal flood advisories for Massachusetts in 2025 and 13 a year on average in 2008-2025; in 2021-2025 it had the 19th most of any state. 2026 through September: 9, in line with the average of 9 for those months in 2008-2025. Eastern Plymouth was covered most often (173 times since 2008).
How many coastal flood advisories does Massachusetts get?
Every coastal flood advisory that covered part of Massachusetts. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 9 |
| 2025 | 10 |
| 2024 | 13 |
| 2023 | 15 |
| 2022 | 9 |
| 2021 | 12 |
| 2020 | 15 |
| 2019 | 12 |
| 2018 | 24 |
| 2017 | 16 |
| 2016 | 16 |
| 2015 | 13 |
| 2014 | 18 |
| 2013 | 6 |
| 2012 | 15 |
| 2011 | 7 |
| 2010 | 22 |
| 2009 | 10 |
| 2008 | 7 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Massachusetts get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Massachusetts?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Eastern Plymouth | 173 | 24 | September 27, 2026 |
| Eastern Essex | 161 | 24 | September 27, 2026 |
| Barnstable | 159 | 25 | September 27, 2026 |
| Eastern Norfolk | 159 | 24 | September 27, 2026 |
| Nantucket | 159 | 33 | September 27, 2026 |
| Suffolk | 158 | 24 | September 27, 2026 |
| Dukes | 69 | 27 | September 27, 2026 |
| Southern Bristol | 53 | 13 | September 25, 2026 |
| Southern Plymouth | 35 | 9 | September 25, 2026 |
| Southeast Middlesex | 5 | 0 | January 30, 2018 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a coastal flood advisory?
A coastal flood advisory covers minor coastal flooding at high tide, such as water on shore roads and low parking lots. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Massachusetts.