National Weather ServiceLouisianaCoastal Flood AdvisoryArchive to October 1, 2026
Coastal Flood Advisories in Louisiana
The National Weather Service issued 18 coastal flood advisories for Louisiana in 2025 and 15 a year on average in 2008-2025; in 2021-2025 it had the 13th most of any state. 2026 through September: 12, 23% above the average of 10 for those months in 2008-2025. Lower St. Bernard was covered most often (117 times since 2008).
How many coastal flood advisories does Louisiana get?
Every coastal flood advisory that covered part of Louisiana. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 12 |
| 2025 | 18 |
| 2024 | 41 |
| 2023 | 24 |
| 2022 | 10 |
| 2021 | 21 |
| 2020 | 29 |
| 2019 | 22 |
| 2018 | 9 |
| 2017 | 18 |
| 2016 | 18 |
| 2015 | 12 |
| 2014 | 6 |
| 2013 | 14 |
| 2012 | 8 |
| 2011 | 3 |
| 2010 | 9 |
| 2009 | 6 |
| 2008 | 7 |
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 Louisiana 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 Louisiana?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Lower St. Bernard | 117 | 49 | June 3, 2026 |
| East Cameron | 108 | 33 | September 1, 2026 |
| Lower Plaquemines | 107 | 42 | July 23, 2026 |
| West Cameron | 106 | 30 | July 23, 2026 |
| Vermilion | 92 | 1 | January 24, 2023 |
| Iberia | 83 | 1 | January 24, 2023 |
| St. Mary | 83 | 1 | January 24, 2023 |
| Lower Lafourche | 77 | 24 | July 23, 2026 |
| St. John The Baptist | 72 | 26 | July 21, 2026 |
| Upper St. Bernard | 69 | 2 | December 24, 2023 |
| Lower Terrebonne | 65 | 21 | July 23, 2026 |
| Orleans | 64 | 0 | November 19, 2020 |
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 advisory?
A coastal flood advisory covers minor coastal flooding at high tide, such as water on shore roads and low parking lots. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Louisiana.