National Weather ServiceNew HampshireCoastal Flood WarningArchive to October 1, 2026
Coastal Flood Warnings in New Hampshire
The National Weather Service issued 0 coastal flood warnings for New Hampshire in 2025 and 4 a year on average in 2008-2025; in 2021-2025 it had the 16th most of any state. 2026 through September: 1, 69% below the average of 3 for those months in 2008-2025. Coastal Rockingham was covered most often (79 times since 2008).
How many coastal flood warnings does New Hampshire get?
Every coastal flood warning that covered part of New Hampshire. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 1 |
| 2025 | 0 |
| 2024 | 4 |
| 2023 | 1 |
| 2022 | 2 |
| 2021 | 3 |
| 2020 | 2 |
| 2019 | 2 |
| 2018 | 7 |
| 2017 | 1 |
| 2016 | 6 |
| 2015 | 5 |
| 2014 | 5 |
| 2013 | 6 |
| 2012 | 7 |
| 2011 | 7 |
| 2010 | 12 |
| 2009 | 7 |
| 2008 | 1 |
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 New Hampshire 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 New Hampshire?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Coastal Rockingham | 79 | 6 | February 23, 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.
What is a coastal flood warning?
A coastal flood warning means seawater flooding of coastal roads and property is happening or expected, usually at high tide. 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 New Hampshire.