National Weather ServiceTennesseeHeat AdvisoryArchive to October 1, 2026
Heat Advisories in Tennessee
The National Weather Service issued 26 heat advisories for Tennessee in 2025 and 21 a year on average in 2008-2025; in 2021-2025 it had the 18th most of any state. 2026 through September: 45, 111% above the average of 21 for those months in 2008-2025. Shelby was covered most often (225 times since 2008).
How many heat advisories does Tennessee get?
Every heat advisory that covered part of Tennessee. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 45 |
| 2025 | 26 |
| 2024 | 33 |
| 2023 | 43 |
| 2022 | 41 |
| 2021 | 23 |
| 2020 | 6 |
| 2019 | 22 |
| 2018 | 19 |
| 2017 | 10 |
| 2016 | 21 |
| 2015 | 17 |
| 2014 | 6 |
| 2013 | 4 |
| 2012 | 28 |
| 2011 | 21 |
| 2010 | 46 |
| 2009 | 5 |
| 2008 | 12 |
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 | 225 | 65 | September 14, 2026 |
| Tipton | 188 | 52 | September 14, 2026 |
| Lauderdale | 176 | 51 | September 14, 2026 |
| Dyer | 162 | 47 | September 14, 2026 |
| Fayette | 161 | 53 | September 14, 2026 |
| Lake | 153 | 44 | September 14, 2026 |
| Haywood | 151 | 49 | September 14, 2026 |
| Hardeman | 147 | 49 | September 14, 2026 |
| Obion | 147 | 42 | September 14, 2026 |
| Crockett | 140 | 47 | September 14, 2026 |
| McNairy | 135 | 46 | September 14, 2026 |
| Madison | 134 | 42 | September 14, 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 heat advisory?
A heat advisory means heat that can make people ill, especially those without cooling, below the office's extreme heat warning values. 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 Tennessee.