National Weather ServiceTennesseeFlash Flood WarningArchive to October 1, 2026
Flash Flood Warnings in Tennessee
The National Weather Service issued 200 flash flood warnings for Tennessee in 2025 and 121 a year on average in 2008-2025; in 2021-2025 it had the 15th most of any state. 2026 through September: 162, 40% above the average of 116 for those months in 2008-2025. Shelby was covered most often (276 times since 2008).
How many flash flood warnings does Tennessee get?
Every flash flood warning that covered part of Tennessee. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 162 |
| 2025 | 200 |
| 2024 | 107 |
| 2023 | 102 |
| 2022 | 72 |
| 2021 | 152 |
| 2020 | 68 |
| 2019 | 106 |
| 2018 | 89 |
| 2017 | 80 |
| 2016 | 115 |
| 2015 | 85 |
| 2014 | 116 |
| 2013 | 128 |
| 2012 | 72 |
| 2011 | 149 |
| 2010 | 225 |
| 2009 | 234 |
| 2008 | 84 |
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 Tennessee 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 Tennessee?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Shelby | 276 | 52 | July 4, 2026 |
| Madison | 178 | 23 | August 8, 2026 |
| Fayette | 173 | 31 | July 4, 2026 |
| Henderson | 172 | 12 | April 6, 2025 |
| Decatur | 171 | 10 | April 6, 2025 |
| Carroll | 152 | 20 | July 5, 2026 |
| Gibson | 149 | 21 | June 13, 2026 |
| Hardeman | 149 | 15 | April 29, 2026 |
| Tipton | 147 | 26 | June 13, 2026 |
| Chester | 145 | 12 | April 6, 2025 |
| Davidson | 145 | 47 | August 12, 2026 |
| Hardin | 143 | 10 | April 6, 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 flash flood warnings for Tennessee in AreaZine's record
NWS MorristownWarningSeptember 23, 2026
Flash Flood Warning: Anderson and Knox, TN
Expired 10:45 p.m. EDT, September 23, 2026
NWS MorristownWarningSeptember 23, 2026
Flash Flood Warning: Knox, TN
Expired 9:30 p.m. EDT, September 23, 2026
NWS NashvilleWarningSeptember 21, 2026
Flash Flood Warning: Jackson and Overton, TN
Expired 12:30 a.m. CDT, September 22, 2026
NWS NashvilleWarningSeptember 21, 2026
Flash Flood Warning: Cumberland, TN
Expired 12:00 a.m. CDT, September 22, 2026
NWS NashvilleWarningSeptember 19, 2026
Flash Flood Warning: Cumberland, TN
Expired 4:00 p.m. CDT, September 19, 2026
NWS NashvilleWarningSeptember 8, 2026
Flash Flood Warning: Wayne, TN
Expired 5:00 p.m. CDT, September 8, 2026
NWS NashvilleWarningSeptember 6, 2026
Flash Flood Warning: Cumberland, TN
Expired 6:00 a.m. CDT, September 6, 2026
NWS NashvilleWarningAugust 20, 2026
Flash Flood Warning: Montgomery, TN
Expired 9:45 a.m. CDT, August 20, 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 flash flood warning?
A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. 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 Tennessee.