Jefferson County weather alerts
There are no active weather alerts for Jefferson County, OH right now.
Since 2016 the National Weather Service has issued about 789 alerts that included Jefferson County, roughly 79 a year. The most common is the severe thunderstorm warning (267 from 2016 to 2025). The last tornado warning was issued on August 16, 2026. 7 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 Harrison County, Carroll County, Brooke County, Belmont 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 | 267 | 41 | October 14, 2026 |
| Severe Thunderstorm Watch | 70 | 14 | September 9, 2026 |
| Winter Weather Advisory | 58 | 1 | March 16, 2026 |
| Flood Advisory | 47 | 0 | August 17, 2024 |
| Flood Warning | 45 | 6 | September 20, 2026 |
| Flood Watch | 41 | 14 | September 20, 2026 |
| Dense Fog Advisory | 36 | 8 | August 21, 2026 |
| Flash Flood Warning | 35 | 16 | September 20, 2026 |
| Frost Advisory | 32 | 4 | October 22, 2026 |
| Wind Advisory | 32 | 2 | March 16, 2026 |
| Freeze Warning | 17 | 4 | October 18, 2026 |
| Tornado Warning | 15 | 2 | August 16, 2026 |
| Tornado Watch | 15 | 3 | March 26, 2026 |
| Cold Weather Advisory | 13 | 8 | February 7, 2026 |
| Freeze Watch | 12 | 3 | October 18, 2026 |
| Heat Advisory | 10 | 3 | September 2, 2026 |
| Winter Storm Warning | 9 | 1 | January 25, 2026 |
| Winter Storm Watch | 7 | 1 | January 25, 2026 |
| Snow Squall Warning | 7 | 10 | February 7, 2026 |
| High Wind Watch | 5 | 0 | December 23, 2022 |
| Red Flag Warning | 4 | 0 | March 19, 2025 |
| High Wind Warning | 4 | 1 | March 13, 2026 |
| Extreme Heat Watch | 3 | 0 | June 22, 2025 |
| Extreme Cold Watch | 2 | 1 | January 27, 2026 |
| Extreme Heat Warning | 1 | 1 | June 30, 2026 |
| Extreme Cold Warning | 1 | 2 | January 31, 2026 |
| Fire Weather Watch | 1 | 0 | March 19, 2025 |
Tornado history in Jefferson County
7 tornadoes have been recorded in Jefferson County since 1950, injuring 1 people. That ranks 74 of 88 counties in Ohio. The most recent was on October 21, 2021 (rated EF1).
Strongest tornadoes in Jefferson County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 27, 1954 | F2 | Jefferson County | 1 mi | 10 yd | 0 | 1 |
| June 2, 2010 | EF1 | Carroll County | 3.8 mi | 300 yd | 0 | 0 |
| July 29, 2021 | EF1 | Jefferson County | 2.3 mi | 300 yd | 0 | 0 |
| July 29, 2021 | EF1 | Jefferson County | 2.2 mi | 300 yd | 0 | 0 |
| June 6, 1980 | F1 | Jefferson County | 0.8 mi | 77 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| October 21, 2021 | EF1 | Jefferson County | 0.4 mi | 70 yd | 0 | 0 |
| July 29, 2021 | EF1 | Jefferson County | 2.3 mi | 300 yd | 0 | 0 |
| July 29, 2021 | EF1 | Jefferson County | 2.2 mi | 300 yd | 0 | 0 |
| June 2, 2010 | EF1 | Carroll County | 3.8 mi | 300 yd | 0 | 0 |
| May 23, 2000 | F0 | Jefferson County | 2 mi | 50 yd | 0 | 0 |
About Jefferson County
- Population: 63,900 (2024 estimate)
- State: Ohio
- NOAA Weather Radio SAME code: 039081 (how to use it)