Jefferson County weather alerts
There are no active weather alerts for Jefferson County, TN right now.
Since 2016 the National Weather Service has issued about 717 alerts that included Jefferson County, roughly 72 a year. The most common is the severe thunderstorm warning (211 from 2016 to 2025). The last tornado warning was issued on February 7, 2025. 10 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Jefferson County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Cocke County, Grainger County, Sevier County, Hamblen County.
Jefferson County alert history
Alert events that included Jefferson County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 211 | 14 | September 18, 2026 |
| Flood Advisory | 102 | 19 | October 3, 2026 |
| Dense Fog Advisory | 55 | 6 | November 6, 2026 |
| Wind Advisory | 54 | 2 | October 10, 2026 |
| Freeze Warning | 45 | 0 | November 2, 2023 |
| Flood Warning | 40 | 0 | February 16, 2025 |
| Flood Watch | 33 | 8 | August 12, 2026 |
| Frost Advisory | 30 | 0 | April 7, 2024 |
| Flash Flood Warning | 26 | 4 | August 13, 2026 |
| Severe Thunderstorm Watch | 25 | 4 | August 17, 2026 |
| Winter Weather Advisory | 24 | 0 | November 10, 2025 |
| Freeze Watch | 20 | 0 | November 1, 2023 |
| Tornado Watch | 12 | 0 | May 20, 2025 |
| Winter Storm Warning | 7 | 1 | January 30, 2026 |
| Winter Storm Watch | 6 | 2 | January 30, 2026 |
| Heat Advisory | 6 | 2 | September 2, 2026 |
| Cold Weather Advisory | 6 | 4 | February 2, 2026 |
| Tornado Warning | 5 | 0 | February 7, 2025 |
| Red Flag Warning | 3 | 0 | March 1, 2025 |
| Extreme Cold Watch | 2 | 0 | January 20, 2025 |
| High Wind Watch | 2 | 0 | September 27, 2024 |
| High Wind Warning | 2 | 0 | September 27, 2024 |
| Extreme Cold Warning | 1 | 0 | December 23, 2022 |
| Ice Storm Warning | 0 | 1 | January 24, 2026 |
Tornado history in Jefferson County
10 tornadoes have been recorded in Jefferson County since 1950. That ranks 66 of 95 counties in Tennessee. The most recent was on January 12, 2023 (rated EF0).
Strongest tornadoes in Jefferson County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 25, 1955 | F2 | Jefferson County | 16.3 mi | 1,760 yd | 0 | 0 |
| June 13, 2013 | EF1 | Jefferson County | 2 mi | 120 yd | 0 | 0 |
| April 4, 1974 | F0 | Jefferson County | 4.5 mi | 27 yd | 0 | 0 |
| April 27, 2011 | EF0 | Jefferson County | 3.3 mi | 50 yd | 0 | 0 |
| January 12, 2023 | EF0 | Jefferson County | 1.1 mi | 100 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| January 12, 2023 | EF0 | Jefferson County | 1.1 mi | 100 yd | 0 | 0 |
| January 12, 2023 | EF0 | Jefferson County | 0.4 mi | 30 yd | 0 | 0 |
| June 13, 2013 | EF1 | Jefferson County | 2 mi | 120 yd | 0 | 0 |
| April 27, 2011 | EF0 | Sevier County | 1.1 mi | 200 yd | 0 | 0 |
| April 27, 2011 | EF0 | Jefferson County | 0.8 mi | 50 yd | 0 | 0 |
About Jefferson County
- Population: 59,217 (2024 estimate)
- State: Tennessee
- NOAA Weather Radio SAME code: 047089 (how to use it)