National Weather ServiceMarylandCoastal Flood WarningArchive to October 1, 2026
Coastal Flood Warnings in Maryland
The National Weather Service issued 15 coastal flood warnings for Maryland in 2025 and 13 a year on average in 2008-2025; in 2021-2025 it had the 1st most of any state. 2026 through September: 4, 54% below the average of 9 for those months in 2008-2025. Anne Arundel was covered most often (109 times since 2008).
How many coastal flood warnings does Maryland get?
Every coastal flood warning that covered part of Maryland. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 4 |
| 2025 | 15 |
| 2024 | 28 |
| 2023 | 18 |
| 2022 | 11 |
| 2021 | 10 |
| 2020 | 15 |
| 2019 | 19 |
| 2018 | 24 |
| 2017 | 12 |
| 2016 | 14 |
| 2015 | 6 |
| 2014 | 10 |
| 2013 | 2 |
| 2012 | 11 |
| 2011 | 13 |
| 2010 | 10 |
| 2009 | 7 |
| 2008 | 5 |
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 | 109 | 30 | September 24, 2026 |
| St. Marys | 97 | 31 | September 27, 2026 |
| Dorchester | 64 | 19 | September 23, 2026 |
| Wicomico | 53 | 17 | September 23, 2026 |
| Somerset | 52 | 16 | September 23, 2026 |
| Southern Baltimore | 43 | 5 | October 29, 2025 |
| Inland Worcester | 30 | 5 | September 23, 2026 |
| Maryland Beaches | 25 | 4 | September 23, 2026 |
| Calvert | 22 | 2 | October 29, 2025 |
| Harford | 17 | 0 | December 21, 2012 |
| Charles | 14 | 2 | October 29, 2025 |
| Kent | 12 | 3 | October 30, 2025 |
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 coastal flood warnings for Maryland in AreaZine's record
NWS Baltimore MD/WashingtonWarningSeptember 26, 2026
Coastal Flood Warning: St. Marys, MD
Expired 6:00 p.m. EDT, September 27, 2026
NWS WakefieldWarningSeptember 25, 2026
Coastal Flood Warning: Inland Worcester, MD
Expired 3:00 a.m. EDT, September 27, 2026
NWS Baltimore MD/WashingtonWarningSeptember 23, 2026
Coastal Flood Warning: Anne Arundel, MD
Expired 11:00 a.m. EDT, September 25, 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 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 Maryland.