National Weather ServiceMassachusettsFlood WarningArchive to October 1, 2026
Flood Warnings in Massachusetts
The National Weather Service issued 12 flood warnings for Massachusetts in 2025 and 39 a year on average in 2008-2025; in 2021-2025 it had the 35th most of any state. 2026 through September: 12, 61% below the average of 31 for those months in 2008-2025. Middlesex was covered most often (229 times since 2008).
How many flood warnings does Massachusetts get?
Every flood warning that covered part of Massachusetts. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 12 |
| 2025 | 12 |
| 2024 | 40 |
| 2023 | 81 |
| 2022 | 5 |
| 2021 | 51 |
| 2020 | 28 |
| 2019 | 46 |
| 2018 | 67 |
| 2017 | 36 |
| 2016 | 17 |
| 2015 | 25 |
| 2014 | 45 |
| 2013 | 18 |
| 2012 | 1 |
| 2011 | 67 |
| 2010 | 85 |
| 2009 | 8 |
| 2008 | 63 |
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 |
|---|---|---|---|
| Middlesex | 229 | 40 | September 27, 2026 |
| Worcester | 196 | 34 | September 28, 2026 |
| Hampden | 148 | 32 | July 29, 2026 |
| Norfolk | 130 | 25 | September 28, 2026 |
| Hampshire | 130 | 26 | July 29, 2026 |
| Bristol | 116 | 24 | September 28, 2026 |
| Plymouth | 115 | 23 | September 28, 2026 |
| Essex | 109 | 19 | May 11, 2025 |
| Franklin | 88 | 20 | July 29, 2026 |
| Suffolk | 70 | 8 | September 27, 2026 |
| Berkshire | 67 | 15 | July 29, 2026 |
| Barnstable | 19 | 0 | September 9, 2021 |
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.
The latest flood warnings for Massachusetts in AreaZine's record
NWS Boston/NortonWarningSeptember 29, 2026
Flood Warning: Bristol and Plymouth, MA
Expired 2:00 a.m. EDT, September 30, 2026
NWS Boston/NortonWarningSeptember 28, 2026
Flood Warning: Bristol, Norfolk, Plymouth and 2 more, MA and RI
Expired 1:45 p.m. EDT, September 28, 2026
NWS Boston/NortonWarningSeptember 27, 2026
Flood Warning: Middlesex, Norfolk, Suffolk and 1 more, MA
Expired 2:30 p.m. EDT, September 27, 2026
NWS Boston/NortonWarningSeptember 27, 2026
Flood Warning: Bristol, Norfolk, Plymouth and 1 more, MA
Expired 1:00 p.m. EDT, September 27, 2026
NWS Boston/NortonWarningJuly 29, 2026
Flood Warning: Franklin, Hampden, Hampshire and 1 more, MA
Expired 8:00 p.m. EDT, July 29, 2026
NWS AlbanyWarningJuly 29, 2026
Flood Warning: Berkshire, Columbia and Rensselaer, MA and NY
Expired 5:45 p.m. EDT, July 29, 2026
NWS AlbanyWarningJuly 29, 2026
Flood Warning: Berkshire, MA
Expired 12:41 p.m. EDT, July 30, 2026
NWS Boston/NortonWarningJune 23, 2026
Flood Warning: Bristol, Kent, Providence and 1 more, MA and RI
Expired 6:15 a.m. EDT, June 23, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a flood warning?
A flood warning means flooding is happening or about to happen. The NWS issues it both for rivers at forecast points (river flood warnings) and for areas where water ponds or runs off (areal flood warnings); AreaZine counts both. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Massachusetts.