Grainger County tornado history
4 tornadoes touched Grainger County, Tennessee between 1950 and 2025 — about 0.1 a year. The strongest was rated EF1 (May 8, 2009).
4tornadoes since 1950
EF1strongest rating
0killed · 2 injured
9.4 milongest path · 2009
(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only
By rating
(E)F01
(E)F13
(E)F20
(E)F30
(E)F40
(E)F50
By month
JFMAMJJASOND
Peak month: May.
By decade
’50’60’70’80’90’00’10’20
Strongest tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| May 8, 2009 | EF1 | 9.4 mi | 100 yd | 0 | 0 |
| Feb 6, 2025 | EF1 | 3.5 mi | 700 yd | 0 | 0 |
| May 10, 1973 | F1 | 0.1 mi | 10 yd | 0 | 0 |
| Oct 1, 1977 | F0 | 2 mi | 33 yd | 2 | 0 |
Most recent tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| Feb 6, 2025 | EF1 | 3.5 mi | 700 yd | 0 | 0 |
| May 8, 2009 | EF1 | 9.4 mi | 100 yd | 0 | 0 |
| Oct 1, 1977 | F0 | 2 mi | 33 yd | 2 | 0 |
| May 10, 1973 | F1 | 0.1 mi | 10 yd | 0 | 0 |
Nearby counties
Questions
How many tornadoes has Grainger County, Tennessee had?
4 tornadoes touched Grainger County, Tennessee between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.1 per year.
What was the strongest tornado in Grainger County?
The strongest rating recorded was EF1 on May 8, 2009, with a 9.4-mile path.
When is tornado season in Grainger County?
Most of its tornadoes happened in May (2 of 4). Tornadoes can occur in any month, so keep alerts on year-round.
Right now: live tornado warnings map · alerts for your location. Dates link to that day’s full storm reports where available.