National Weather ServiceMassachusettsSevere Thunderstorm WarningArchive to October 1, 2026
Severe Thunderstorm Warnings in Massachusetts
The National Weather Service issued 80 severe thunderstorm warnings for Massachusetts in 2025 and 122 a year on average in 2008-2025; in 2021-2025 it had the 38th most of any state. 2026 through September: 58, 51% below the average of 118 for those months in 2008-2025. Worcester was covered most often (772 times since 2008).
How many severe thunderstorm warnings does Massachusetts get?
Every severe thunderstorm warning that covered part of Massachusetts. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 58 |
| 2025 | 80 |
| 2024 | 108 |
| 2023 | 89 |
| 2022 | 78 |
| 2021 | 151 |
| 2020 | 156 |
| 2019 | 134 |
| 2018 | 100 |
| 2017 | 80 |
| 2016 | 117 |
| 2015 | 97 |
| 2014 | 129 |
| 2013 | 97 |
| 2012 | 100 |
| 2011 | 141 |
| 2010 | 136 |
| 2009 | 108 |
| 2008 | 288 |
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 |
|---|---|---|---|
| Worcester | 772 | 123 | August 13, 2026 |
| Hampden | 516 | 103 | August 13, 2026 |
| Middlesex | 516 | 76 | August 8, 2026 |
| Hampshire | 494 | 84 | August 8, 2026 |
| Berkshire | 468 | 68 | August 8, 2026 |
| Franklin | 461 | 77 | August 8, 2026 |
| Norfolk | 368 | 53 | August 8, 2026 |
| Plymouth | 298 | 48 | August 13, 2026 |
| Bristol | 290 | 47 | August 13, 2026 |
| Essex | 231 | 33 | August 8, 2026 |
| Suffolk | 185 | 25 | May 19, 2026 |
| Barnstable | 111 | 15 | August 13, 2026 |
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 severe thunderstorm warnings for Massachusetts in AreaZine's record
NWS Boston/NortonWarningAugust 8, 2026
Severe Thunderstorm Warning: Hartford, Hampden and Hampshire, CT and MA
Expired 6:15 p.m. EDT, August 8, 2026
NWS AlbanyWarningAugust 8, 2026
Severe Thunderstorm Warning: Berkshire, Columbia and Rensselaer, MA and NY
Expired 5:15 p.m. EDT, August 8, 2026
NWS Boston/NortonWarningAugust 7, 2026
Severe Thunderstorm Warning: Tolland, Windham, Hampden and 3 more, CT and MA
Expired 9:45 p.m. EDT, August 7, 2026
NWS Boston/NortonWarningAugust 7, 2026
Severe Thunderstorm Warning: Hartford, Tolland, Windham and 1 more, CT and MA
Expired 9:45 p.m. EDT, August 7, 2026
NWS AlbanyWarningJuly 28, 2026
Severe Thunderstorm Warning: Berkshire, Columbia and Dutchess, MA and NY
Expired 3:45 p.m. EDT, July 28, 2026
NWS Boston/NortonWarningJuly 16, 2026
Severe Thunderstorm Warning: Essex, MA
Expired 6:45 p.m. EDT, July 16, 2026
NWS Boston/NortonWarningJuly 16, 2026
Severe Thunderstorm Warning: Essex, MA
Expired 5:45 p.m. EDT, July 16, 2026
NWS Boston/NortonWarningJuly 2, 2026
Severe Thunderstorm Warning: Tolland, Windham, Hampden and 2 more, CT and MA
Expired 12:30 a.m. EDT, July 3, 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 severe thunderstorm warning?
A severe thunderstorm warning means a storm is producing, or is about to produce, hail one inch across or larger and/or winds of 58 mph or more. 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.