National Weather ServiceLouisianaFlood AdvisoryArchive to October 1, 2026
Flood Advisories in Louisiana
The National Weather Service issued 161 flood advisories for Louisiana in 2025 and 148 a year on average in 2008-2025; in 2021-2025 it had the 23rd most of any state. 2026 through September: 154, 17% above the average of 131 for those months in 2008-2025. Jefferson was covered most often (486 times since 2008).
How many flood advisories does Louisiana get?
Every flood advisory that covered part of Louisiana. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 154 |
| 2025 | 161 |
| 2024 | 165 |
| 2023 | 105 |
| 2022 | 155 |
| 2021 | 201 |
| 2020 | 126 |
| 2019 | 182 |
| 2018 | 176 |
| 2017 | 180 |
| 2016 | 208 |
| 2015 | 145 |
| 2014 | 114 |
| 2013 | 126 |
| 2012 | 177 |
| 2011 | 87 |
| 2010 | 142 |
| 2009 | 178 |
| 2008 | 44 |
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 |
|---|---|---|---|
| Jefferson | 486 | 150 | September 10, 2026 |
| Orleans | 436 | 139 | September 10, 2026 |
| St. Tammany | 328 | 76 | September 5, 2026 |
| East Baton Rouge | 298 | 89 | July 12, 2026 |
| St. Bernard | 293 | 93 | September 10, 2026 |
| St. Charles | 289 | 85 | September 10, 2026 |
| Livingston | 276 | 78 | September 10, 2026 |
| Plaquemines | 251 | 64 | September 10, 2026 |
| Iberville | 229 | 56 | June 16, 2026 |
| Ascension | 224 | 47 | September 1, 2026 |
| Lafourche | 215 | 47 | August 7, 2026 |
| Tangipahoa | 213 | 40 | September 10, 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 flood advisory?
A flood advisory covers flooding that is less serious than a warning, such as water on roads or in low-lying areas, that is still a hazard to drivers and walkers. 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.