Ohio alerts

Hardin County, Ohio weather alerts

1 National Weather Service alert is in force for Hardin County: a flood watch.

Checked Sun, Sep 20, 2026, 6:25 PM EDT. Times are Eastern Daylight Time.

Hardin County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Hardin County, Ohio. Open it for the live map, where it pans and zooms.

Every watch, warning and advisory the National Weather Service has in force over Hardin County, Ohio Open the live map with warnings and watches

Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.

Alerts in force1

Every product in force for Hardin County, worst first, with its full text.

Flood Watch

Severe

Flood Watch issued September 20 at 1:07PM EDT until September 21 at 8:00AM EDT by NWS Wilmington OH

Begins Until 13 hr 35 min left

Areas Wayne, IN; Fayette, IN; Union, IN; Franklin, IN; Ripley, IN; Dearborn, IN; Hardin, OH; Mercer, OH; Auglaize, OH; Darke, OH; Shelby, OH; Logan, OH; Union, OH; Delaware, OH; Miami, OH; Champaign, OH; Clark, OH; Madison, OH; Franklin, OH; Licking, OH; Preble, OH; Montgomery, OH; Greene, OH; Fayette, OH; Pickaway, OH; Fairfield, OH; Butler, OH; Warren, OH; Clinton, OH; Ross, OH; Hocking, OH; Hamilton, OH; Clermont, OH; Brown, OH; Highland, OH; Adams, OH; Pike, OH; Scioto, OH

Full text

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Indiana, including the following counties, Dearborn, Fayette, Franklin, Ripley, Union and Wayne and Ohio, including the following counties, Adams, Auglaize, Brown, Butler, Champaign, Clark, Clermont, Clinton, Darke, Delaware, Fairfield, Fayette, Franklin, Greene, Hamilton, Hardin, Highland, Hocking, Licking, Logan, Madison, Mercer, Miami, Montgomery, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Union and Warren. * WHEN...From 7 PM EDT this evening through Monday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Showers and thunderstorms producing heavy rain will impact the area overnight. Rainfall totals of 1 to 3 inches are expected with locally higher amounts. The heavy rain combined with saturated ground will lead to potential flash flooding.

What to do

People in the watch area should keep an eye on the weather and be prepared for immediate action should heavy rains and flooding occur or a Flash Flood Warning be issued. Avoid low-lying areas and be careful when approaching highway dips and underpasses.

NWS Wilmington OHShare this alert

The past year in Hardin County

In the past year the National Weather Service issued 103 alerts for Hardin County, including 13 severe thunderstorm warnings, 5 freeze warnings, 3 extreme cold warnings and 2 flash flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning13Sep 5, 2026
Freeze Warning5Apr 20, 2026
Extreme Cold Warning3Jan 30, 2026
Flash Flood Warning2Aug 20, 2026
Flood Warning2Aug 20, 2026
High Wind Warning2Mar 15, 2026
Extreme Heat Warning1Jun 30, 2026
Winter Storm Warning1Jan 24, 2026
Severe Thunderstorm Watch15Sep 5, 2026
Flood Watch5Sep 20, 2026
Freeze Watch3Apr 20, 2026
Tornado Watch2Mar 26, 2026
Extreme Cold Watch1Jan 26, 2026
High Wind Watch1Mar 13, 2026
Winter Storm Watch1Jan 24, 2026
Dense Fog Advisory10Sep 13, 2026
Cold Weather Advisory9Feb 7, 2026
Wind Advisory8Mar 15, 2026
Heat Advisory6Sep 1, 2026
Winter Weather Advisory6Feb 23, 2026
Frost Advisory4May 3, 2026
Flood Advisory2Aug 10, 2026
Blowing Dust Advisory1Mar 13, 2026

Warnings issued

  1. Severe Thunderstorm Warning
  2. Severe Thunderstorm Warning
  3. Flood Warning
  4. Flash Flood Warning
  5. Flood Warning
  6. Flash Flood Warning
  7. Severe Thunderstorm Warning
  8. Severe Thunderstorm Warning
  9. Extreme Heat Warning
  10. Severe Thunderstorm Warning
  11. Freeze Warning
  12. Severe Thunderstorm Warning
  13. Freeze Warning
  14. Freeze Warning
  15. Severe Thunderstorm Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Warning
  18. Severe Thunderstorm Warning
  19. Severe Thunderstorm Warning
  20. High Wind Warning
  21. High Wind Warning
  22. Severe Thunderstorm Warning
  23. Severe Thunderstorm Warning
  24. Extreme Cold Warning
  25. Extreme Cold Warning
  26. Extreme Cold Warning
  27. Winter Storm Warning
  28. Freeze Warning
  29. Freeze Warning
Every alert, most recent first
  1. Flood Watch
  2. Flood Watch
  3. Dense Fog Advisory
  4. Severe Thunderstorm Warning
  5. Severe Thunderstorm Watch
  6. Severe Thunderstorm Warning
  7. Heat Advisory
  8. Flood Warning
  9. Flash Flood Warning
  10. Flood Watch
  11. Flood Watch
  12. Severe Thunderstorm Watch
  13. Flood Warning
  14. Flash Flood Warning
  15. Flood Advisory
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Watch
  18. Severe Thunderstorm Watch
  19. Flood Watch
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Watch
  22. Heat Advisory
  23. Severe Thunderstorm Watch
  24. Heat Advisory
  25. Extreme Heat Warning
  26. Heat Advisory
  27. Severe Thunderstorm Watch
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Watch
  30. Heat Advisory
  31. Heat Advisory
  32. Severe Thunderstorm Watch
  33. Dense Fog Advisory
  34. Flood Advisory
  35. Severe Thunderstorm Watch
  36. Frost Advisory
  37. Frost Advisory
  38. Freeze Warning
  39. Freeze Watch
  40. Severe Thunderstorm Warning

The 40 most recent of 103.

From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.

Nearby

The counties around Hardin County, with what is in force in each.

What this means

Warning
The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
Watch
Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
Advisory
A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
Statement
Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.

Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.

Sources

Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.