Knox County weather alerts
There are no active weather alerts for Knox County, OH right now.
Since 2016 the National Weather Service has issued about 575 alerts that included Knox County, roughly 58 a year. The most common is the severe thunderstorm warning (107 from 2016 to 2025). The last tornado warning was issued on March 27, 2026. 13 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 Knox County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Delaware County, Licking County, Holmes County, Richland County.
Knox County alert history
Alert events that included Knox County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 107 | 22 | September 17, 2026 |
| Severe Thunderstorm Watch | 55 | 18 | September 9, 2026 |
| Flood Advisory | 53 | 5 | September 17, 2026 |
| Wind Advisory | 51 | 2 | March 15, 2026 |
| Dense Fog Advisory | 45 | 7 | August 15, 2026 |
| Winter Weather Advisory | 45 | 1 | February 6, 2026 |
| Frost Advisory | 34 | 3 | October 19, 2026 |
| Flood Watch | 30 | 5 | August 15, 2026 |
| Freeze Warning | 24 | 4 | October 18, 2026 |
| Cold Weather Advisory | 21 | 6 | February 7, 2026 |
| Flood Warning | 20 | 2 | April 4, 2026 |
| Heat Advisory | 15 | 7 | September 3, 2026 |
| Tornado Watch | 14 | 2 | March 26, 2026 |
| Freeze Watch | 12 | 3 | October 18, 2026 |
| Tornado Warning | 10 | 1 | March 27, 2026 |
| High Wind Warning | 7 | 1 | March 13, 2026 |
| Flash Flood Warning | 6 | 3 | September 17, 2026 |
| Winter Storm Watch | 5 | 1 | January 25, 2026 |
| Winter Storm Warning | 4 | 1 | January 25, 2026 |
| Extreme Heat Watch | 3 | 0 | June 22, 2025 |
| High Wind Watch | 3 | 1 | March 13, 2026 |
| Extreme Cold Warning | 3 | 1 | January 27, 2026 |
| Red Flag Warning | 2 | 0 | November 19, 2020 |
| Extreme Heat Warning | 2 | 1 | June 30, 2026 |
| Extreme Cold Watch | 2 | 1 | January 27, 2026 |
| Fire Weather Watch | 1 | 0 | May 1, 2018 |
| Snow Squall Warning | 1 | 0 | December 5, 2024 |
Tornado history in Knox County
13 tornadoes have been recorded in Knox County since 1950, injuring 17 people. That ranks 58 of 88 counties in Ohio. The most recent was on June 5, 2024 (rated EF0).
Strongest tornadoes in Knox County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 8, 1981 | F2 | Knox County | 3.8 mi | 50 yd | 0 | 2 |
| April 2, 1970 | F2 | Knox County | 2 mi | 150 yd | 0 | 1 |
| March 31, 1982 | F2 | Knox County | 1 mi | 200 yd | 0 | 4 |
| April 3, 1982 | F2 | Knox County | 0.8 mi | 50 yd | 0 | 9 |
| June 11, 1957 | F2 | Knox County | 0.5 mi | 100 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 5, 2024 | EF0 | Knox County | 3.3 mi | 80 yd | 0 | 0 |
| June 13, 2022 | EF1 | Morrow County | 7.1 mi | 25 yd | 0 | 0 |
| August 3, 2006 | F0 | Knox County | 0.1 mi | 17 yd | 0 | 1 |
| September 20, 2000 | F1 | Knox County | 10 mi | 70 yd | 0 | 0 |
| June 27, 1998 | F0 | Knox County | 0.5 mi | 70 yd | 0 | 0 |
About Knox County
- Population: 63,848 (2024 estimate)
- State: Ohio
- NOAA Weather Radio SAME code: 039083 (how to use it)