Williams County weather alerts
There are no active weather alerts for Williams County, OH right now.
Since 2016 the National Weather Service has issued about 624 alerts that included Williams County, roughly 62 a year. The most common is the flood warning (89 from 2016 to 2025). The last tornado warning was issued on August 9, 2026. 6 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 Williams County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Defiance County, Hillsdale County, Steuben County, DeKalb County.
Williams County alert history
Alert events that included Williams County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 89 | 8 | July 18, 2026 |
| Severe Thunderstorm Warning | 89 | 16 | September 5, 2026 |
| Dense Fog Advisory | 75 | 9 | October 24, 2026 |
| Winter Weather Advisory | 63 | 1 | February 2, 2026 |
| Severe Thunderstorm Watch | 52 | 16 | September 5, 2026 |
| Wind Advisory | 51 | 5 | June 17, 2026 |
| Frost Advisory | 32 | 4 | October 19, 2026 |
| Flood Advisory | 27 | 9 | August 9, 2026 |
| Heat Advisory | 27 | 7 | September 3, 2026 |
| Freeze Warning | 18 | 3 | October 18, 2026 |
| Flood Watch | 13 | 5 | August 11, 2026 |
| Cold Weather Advisory | 12 | 6 | February 7, 2026 |
| Winter Storm Watch | 11 | 0 | November 29, 2025 |
| Winter Storm Warning | 10 | 1 | January 25, 2026 |
| Tornado Watch | 9 | 2 | June 12, 2026 |
| High Wind Watch | 7 | 1 | March 13, 2026 |
| Extreme Heat Watch | 7 | 1 | June 29, 2026 |
| Extreme Heat Warning | 7 | 1 | June 29, 2026 |
| Freeze Watch | 6 | 3 | October 18, 2026 |
| High Wind Warning | 4 | 1 | March 13, 2026 |
| Tornado Warning | 4 | 2 | August 9, 2026 |
| Red Flag Warning | 2 | 0 | October 14, 2022 |
| Flash Flood Warning | 2 | 0 | July 7, 2019 |
| Extreme Cold Watch | 2 | 0 | January 20, 2025 |
| Extreme Cold Warning | 2 | 0 | January 15, 2024 |
| Ice Storm Warning | 1 | 0 | February 12, 2019 |
| Fire Weather Watch | 1 | 0 | April 12, 2023 |
| Snow Squall Warning | 1 | 1 | January 19, 2026 |
Tornado history in Williams County
6 tornadoes have been recorded in Williams County since 1950, injuring 1 people. That ranks 78 of 88 counties in Ohio. The most recent was on May 26, 2001 (rated F0).
Strongest tornadoes in Williams County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 25, 1965 | F2 | Williams County | 9.4 mi | 880 yd | 0 | 1 |
| July 4, 1957 | F2 | Williams County | 2.7 mi | 10 yd | 0 | 0 |
| August 22, 1964 | F2 | Williams County | 0.1 mi | 10 yd | 0 | 0 |
| April 29, 1959 | F1 | Williams County | 0.1 mi | 10 yd | 0 | 0 |
| April 17, 1969 | F1 | Williams County | 0.1 mi | 300 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 26, 2001 | F0 | Williams County | 0.1 mi | 10 yd | 0 | 0 |
| April 17, 1969 | F1 | Williams County | 0.1 mi | 300 yd | 0 | 0 |
| August 25, 1965 | F2 | Williams County | 9.4 mi | 880 yd | 0 | 1 |
| August 22, 1964 | F2 | Williams County | 0.1 mi | 10 yd | 0 | 0 |
| April 29, 1959 | F1 | Williams County | 0.1 mi | 10 yd | 0 | 0 |
About Williams County
- Population: 36,554 (2024 estimate)
- State: Ohio
- NOAA Weather Radio SAME code: 039171 (how to use it)