Lightning TrackerKnoxville storms: live alerts, hail & tornado history
Live watches and warnings for Knoxville, TN, the 48-hour thunderstorm outlook, and every hail, damaging-wind and tornado report within 25 miles since 2016.
Live alerts for Knoxville, TN
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Storm outlook, next 48 hours
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Severe weather in Knoxville by the numbers
Knoxville sits in one of the most active severe-weather areas in the country: since 2016, spotters and emergency managers have filed 559 severe-weather reports within 25 miles of the city — 101 hail reports, 454 damaging-wind reports and 4 tornado reports. On average that is 15.7 days a year with at least one report.
Storm season here peaks in May, July, August, when 51% of all reports were filed.
In the last 12 months there were 8 hail reports, 29 wind reports and 0 tornado reports around Knoxville; the largest hail was 1.00″ (quarter) on Aug 17, 2026.
Latest storm reports near Knoxville
| Date | Report | Where |
|---|---|---|
| Sep 5, 2026 | Damaging wind | 25 mi W · Roane Co. |
| Aug 17, 2026 | Damaging wind | 3 mi N · Knox Co. |
| Aug 17, 2026 | Hail 1.00″ | 15 mi S · Blount Co. |
| Aug 14, 2026 | Damaging wind | 7 mi NW · Knox Co. |
| Aug 13, 2026 | Damaging wind | 15 mi S · Blount Co. |
| Jul 28, 2026 | Damaging wind | 22 mi SE · Sevier Co. |
| Jul 5, 2026 | Damaging wind | 18 mi N · Anderson Co. |
| Jul 3, 2026 | Damaging wind | 14 mi S · Blount Co. |
| Jul 3, 2026 | Hail 1.00″ | 17 mi NW · Anderson Co. |
| Jun 1, 2026 | Damaging wind | 22 mi SW · Loudon Co. |
One line per day and type — the closest report that day. Distance and direction from the city centre. The latest SPC reports are preliminary until NOAA finalises them.
Storm reports by year
Storm season in Knoxville
All hail, wind and tornado reports within 25 miles, 2016–2026, by month.
Hail in Knoxville
Knoxville averages 4.0 days a year with hail reported nearby. The biggest stone on record since 2016 was 2.00 inches — about the size of a hen egg — reported 21 miles from the city centre on Mar 21, 2017. Hail of 1 inch (quarter size) or larger is what makes a thunderstorm severe; see the hail size chart.
Tornadoes near Knoxville
There have been 4 tornado reports within 25 miles of Knoxville since 2016; the strongest was rated EF2 (Aug 7, 2023, 13 miles from the city centre). A tornado warning means a tornado is occurring or imminent — take shelter immediately.
Storm alerts for Knoxville on your iPhone
Lightning Tracker shows storm risk around you, live severe-weather alerts and how close the storm is — free on the App Store.
Storm trackers near Knoxville
Questions about storms in Knoxville
Does Knoxville get a lot of severe storms?
Knoxville averages 15.7 days a year with at least one hail, damaging-wind or tornado report within 25 miles, based on NOAA Storm Prediction Center reports 2016–2025.
When is storm season in Knoxville?
Most severe-weather reports around Knoxville come in May, July, August.
What is the biggest hail recorded near Knoxville?
2.00 inches (hen egg size) on Mar 21, 2017, 21 miles from the city centre.
Have tornadoes hit near Knoxville?
Yes — 4 tornado reports within 25 miles since 2016, the strongest rated EF2 on Aug 7, 2023.
How do I get storm alerts for Knoxville?
The live panel on this page shows every active National Weather Service watch and warning for Knoxville, TN. For alerts on your phone, Lightning Tracker for iPhone shows storm risk and warnings for your location.
How this page works: storm reports are NOAA Storm Prediction Center local storm reports (final database 2016–2025, preliminary daily reports after that) within 25 miles of Knoxville, TN. They are reports of hail, damaging wind and tornadoes — not lightning strike counts, which no free public dataset provides at city level. Live alerts come from the National Weather Service API, the outlook from Open-Meteo forecast models. Updated Oct 7, 2026.