National Weather ServiceMarylandCoastal Flood WatchArchive to October 1, 2026
Coastal Flood Watches in Maryland
The National Weather Service issued 9 coastal flood watches for Maryland in 2025 and 8 a year on average in 2008-2025; in 2021-2025 it had the 1st most of any state. 2026 through September: 4, 30% below the average of 6 for those months in 2008-2025. Anne Arundel was covered most often (90 times since 2008).
How many coastal flood watches does Maryland get?
Every coastal flood watch that covered part of Maryland. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 4 |
| 2025 | 9 |
| 2024 | 22 |
| 2023 | 14 |
| 2022 | 7 |
| 2021 | 9 |
| 2020 | 12 |
| 2019 | 13 |
| 2018 | 15 |
| 2017 | 3 |
| 2016 | 2 |
| 2015 | 6 |
| 2014 | 3 |
| 2013 | 5 |
| 2012 | 6 |
| 2011 | 10 |
| 2010 | 5 |
| 2009 | 6 |
| 2008 | 3 |
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 Maryland 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 Maryland?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Anne Arundel | 90 | 28 | September 27, 2026 |
| St. Marys | 79 | 20 | September 24, 2026 |
| Southern Baltimore | 37 | 2 | April 12, 2024 |
| Calvert | 31 | 3 | October 29, 2025 |
| Dorchester | 29 | 15 | September 23, 2026 |
| Somerset | 28 | 14 | September 23, 2026 |
| Wicomico | 28 | 14 | September 23, 2026 |
| Inland Worcester | 24 | 4 | September 23, 2026 |
| Maryland Beaches | 24 | 4 | September 23, 2026 |
| Charles | 21 | 2 | January 9, 2024 |
| Harford | 21 | 0 | May 1, 2014 |
| Prince Georges | 18 | 1 | January 9, 2024 |
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 watch?
A coastal flood watch means significant coastal flooding is possible. A watch means the conditions for the hazard are possible or favourable, but it is not yet happening: be ready to act if a warning follows. The national record · Every warning type in Maryland.