Marion County weather alerts
There are no active weather alerts for Marion County, OH right now.
Since 2016 the National Weather Service has issued about 627 alerts that included Marion County, roughly 63 a year. The most common is the flood warning (83 from 2016 to 2025). The last tornado warning was issued on April 4, 2026. 17 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 Marion County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Crawford County, Delaware County, Union County, Hardin County.
Marion County alert history
Alert events that included Marion County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 83 | 5 | August 21, 2026 |
| Severe Thunderstorm Warning | 76 | 19 | September 5, 2026 |
| Wind Advisory | 65 | 3 | April 28, 2026 |
| Flood Advisory | 55 | 5 | August 17, 2026 |
| Dense Fog Advisory | 47 | 8 | October 21, 2026 |
| Winter Weather Advisory | 47 | 1 | February 6, 2026 |
| Severe Thunderstorm Watch | 45 | 16 | September 9, 2026 |
| Frost Advisory | 32 | 4 | October 19, 2026 |
| Flood Watch | 29 | 4 | August 15, 2026 |
| Freeze Warning | 25 | 3 | October 18, 2026 |
| Cold Weather Advisory | 23 | 6 | February 7, 2026 |
| Heat Advisory | 15 | 7 | September 3, 2026 |
| Tornado Watch | 13 | 2 | March 26, 2026 |
| Freeze Watch | 12 | 3 | October 18, 2026 |
| High Wind Warning | 11 | 1 | March 13, 2026 |
| Tornado Warning | 11 | 2 | April 4, 2026 |
| Flash Flood Warning | 10 | 2 | August 16, 2026 |
| Extreme Heat Watch | 4 | 0 | June 22, 2025 |
| High Wind Watch | 4 | 1 | March 13, 2026 |
| Winter Storm Watch | 4 | 1 | January 25, 2026 |
| Winter Storm Warning | 4 | 1 | January 25, 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 |
| Ice Storm Warning | 1 | 0 | December 18, 2016 |
| Fire Weather Watch | 1 | 0 | May 1, 2018 |
| Snow Squall Warning | 1 | 0 | December 5, 2024 |
Tornado history in Marion County
17 tornadoes have been recorded in Marion County since 1950, injuring 17 people. That ranks 40 of 88 counties in Ohio. The most recent was on August 12, 2023 (rated EF1).
Strongest tornadoes in Marion County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 10, 1973 | F2 | Wyandot County | 58.2 mi | 267 yd | 0 | 14 |
| May 6, 1971 | F2 | Marion County | 7.4 mi | 150 yd | 0 | 3 |
| August 21, 1960 | F2 | Marion County | 4.5 mi | 880 yd | 0 | 0 |
| May 23, 2000 | F2 | Marion County | 3 mi | 200 yd | 0 | 0 |
| August 8, 1979 | F2 | Marion County | 1.2 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 12, 2023 | EF1 | Marion County | 0.1 mi | 75 yd | 0 | 0 |
| July 31, 2018 | EF0 | Marion County | 0.6 mi | 20 yd | 0 | 0 |
| November 10, 2002 | F0 | Marion County | 0.1 mi | 25 yd | 0 | 0 |
| May 23, 2000 | F2 | Marion County | 3 mi | 200 yd | 0 | 0 |
| August 25, 1998 | F0 | Marion County | 3 mi | 30 yd | 0 | 0 |
About Marion County
- Population: 64,976 (2024 estimate)
- State: Ohio
- NOAA Weather Radio SAME code: 039101 (how to use it)