Alert archive / Tennessee / Severe Thunderstorm Warnings / 2026
Severe Thunderstorm Warnings in Tennessee, September 2026
23 severe thunderstorm warnings in September 2026. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in September 2026. Tap one for its archive.
- Severe Thunderstorm Warnings
- 23
- Busiest day
- September 21, 20266 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 5:05 PM CDT | Severe Thunderstorm Warning | MRX | Hancock | 40 min |
| Sep 5, 10:16 AM CDT | Severe Thunderstorm Warning | MRX | Carter, Greene, Hancock, Hawkins, Sullivan, Washington | 74 min |
| Sep 5, 11:27 AM CDT | Severe Thunderstorm Warning | MRX | Carter, Cocke, Greene, Jefferson, Unicoi, Washington | 48 min |
| Sep 5, 12:03 PM CDT | Severe Thunderstorm Warning | MRX | Anderson, Knox, Loudon, Morgan, Roane | 57 min |
| Sep 5, 5:43 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lincoln | 20 min |
| Sep 5, 6:39 PM CDT | Severe Thunderstorm Warning | OHX | Wilson | 23 min |
| Sep 5, 7:14 PM CDT | Severe Thunderstorm Warning | MRX | Knox, Sevier | 23 min |
| Sep 11, 6:36 PM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Madison | 39 min |
| Sep 18, 6:03 PM CDT | Severe Thunderstorm Warning | MRX | Grainger, Hamblen, Jefferson | 29 min |
| Sep 18, 7:01 PM CDT | Severe Thunderstorm Warning | MRX | Sevier | 30 min |
| Sep 19, 12:46 PM CDT | Severe Thunderstorm Warning | MRX | Hamilton, Marion, Sequatchie | 59 min |
| Sep 20, 4:37 PM CDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne, Union | 38 min |
| Sep 20, 5:05 PM CDT | Severe Thunderstorm Warning | MRX | Bledsoe, Sequatchie | 40 min |
| Sep 20, 5:41 PM CDT | Severe Thunderstorm Warning | MRX | Hamilton, Marion, Sequatchie | 49 min |
| Sep 21, 1:26 PM CDT | Severe Thunderstorm Warning | MRX | Morgan | 49 min |
| Sep 21, 2:02 PM CDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne | 43 min |
| Sep 21, 2:55 PM CDT | Severe Thunderstorm Warning | MRX | Hamilton, Marion | 35 min |
| Sep 21, 4:19 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lincoln | 41 min |
| Sep 21, 5:08 PM CDT | Severe Thunderstorm Warning | MRX | Sullivan | 52 min |
| Sep 21, 6:37 PM CDT | Severe Thunderstorm Warning | HUN | Lincoln | 38 min |
| Sep 21, 7:02 PM CDT | Severe Thunderstorm Warning | HUN | Lincoln | 43 min |
| Sep 21, 8:41 PM CDT | Severe Thunderstorm Warning | OHX | Putnam, White | 31 min |
| Sep 21, 10:45 PM CDT | Severe Thunderstorm Warning | MRX | Claiborne, Hancock | 28 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lincoln County4
- Hancock County3
- Hamilton County3
- Marion County3
- Sequatchie County3
- Claiborne County3
- Carter County2
- Greene County2
- Sullivan County2
- Washington County2
- Jefferson County2
- Knox County2
- Morgan County2
- Franklin County2
- Sevier County2
- Campbell County2
- Hawkins County1
- Cocke County1
- Unicoi County1
- Anderson County1
- Loudon County1
- Roane County1
- Wilson County1
- Fayette County1
- Hardeman County1
- Haywood County1
- Madison County1
- Grainger County1
- Hamblen County1
- Union County1
- Bledsoe County1
- Putnam County1
- White County1
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.