National Weather ServiceLouisianaFlash Flood WatchArchive to October 1, 2026
Flash Flood Watches in Louisiana
The National Weather Service issued 0 flash flood watches for Louisiana in 2025 and 25 a year on average in 2008-2025; in 2021-2025 it had the 12th most of any state. 2026 through September: 0, 100% below the average of 21 for those months in 2008-2025. East Carroll was covered most often (111 times since 2008).
How many flash flood watches does Louisiana get?
Every flash flood watch that covered part of Louisiana. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 0 |
| 2025 | 0 |
| 2024 | 0 |
| 2023 | 0 |
| 2022 | 0 |
| 2021 | 35 |
| 2020 | 34 |
| 2019 | 38 |
| 2018 | 27 |
| 2017 | 33 |
| 2016 | 27 |
| 2015 | 45 |
| 2014 | 28 |
| 2013 | 32 |
| 2012 | 34 |
| 2011 | 15 |
| 2010 | 11 |
| 2009 | 50 |
| 2008 | 36 |
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 |
|---|---|---|---|
| East Carroll | 111 | 0 | August 30, 2021 |
| Madison | 111 | 0 | August 30, 2021 |
| Upper Jefferson | 108 | 0 | September 14, 2021 |
| Upper Plaquemines | 108 | 0 | September 14, 2021 |
| Upper St. Bernard | 108 | 0 | September 14, 2021 |
| St. Charles | 107 | 0 | September 14, 2021 |
| St. John The Baptist | 106 | 0 | September 14, 2021 |
| St. James | 104 | 0 | September 14, 2021 |
| Upper Lafourche | 104 | 0 | September 14, 2021 |
| Upper Terrebonne | 104 | 0 | September 14, 2021 |
| West Carroll | 103 | 0 | August 30, 2021 |
| Tensas | 102 | 0 | August 30, 2021 |
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 flash flood watch?
A flash flood watch means the rain or conditions that lead to flash flooding are possible in the coming hours. Since 2022 most NWS offices issue a flood watch in its place: the national count fell from 692 in 2021 to 76 in 2022, while flood watches rose from 203 to 715 (IEM archive), so compare the two together. 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 Louisiana.