Ohio alerts

Mercer County, Ohio weather alerts

No watches, warnings or advisories are in force for Mercer County.

Checked Sat, Sep 26, 2026, 1:43 AM EDT. Times are Eastern Daylight Time.

Mercer County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Mercer 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 Mercer 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 force

Nothing is in force for Mercer County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.

The past year in Mercer County

In the past year the National Weather Service issued 125 alerts for Mercer County, including 24 severe thunderstorm warnings, 5 freeze warnings, 4 flood warnings and 3 tornado warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning24Aug 12, 2026
Freeze Warning5Apr 20, 2026
Flood Warning4Sep 19, 2026
Tornado Warning3Jun 16, 2026
Extreme Cold Warning2Jan 27, 2026
Flash Flood Warning2Sep 17, 2026
High Wind Warning2Mar 15, 2026
Extreme Heat Warning1Jun 30, 2026
Winter Storm Warning1Jan 24, 2026
Severe Thunderstorm Watch16Sep 5, 2026
Flood Watch5Sep 20, 2026
Freeze Watch3Apr 20, 2026
Tornado Watch2Mar 26, 2026
Winter Storm Watch2Jan 24, 2026
Extreme Cold Watch1Jan 26, 2026
High Wind Watch1Mar 13, 2026
Cold Weather Advisory9Feb 7, 2026
Dense Fog Advisory9Sep 13, 2026
Flood Advisory8Sep 16, 2026
Wind Advisory8Mar 15, 2026
Heat Advisory6Sep 1, 2026
Frost Advisory5May 3, 2026
Winter Weather Advisory5Feb 23, 2026
Blowing Dust Advisory1Mar 13, 2026

Warnings issued

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

The 40 most recent of 125.

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 links to the alert's own page, with its text, map, radar and sounding.

Every alert in Mercer County since 1986

Nearby

The counties around Mercer 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.

Follow these alerts

Alerts for Mercer County in your reader or calendar.

The alerts on this page as a feed, updated every minute, for a feed reader or an app that reads Atom or RSS, and as a calendar where each alert runs from when it takes effect to when it ends. A feed or a calendar is not a warning siren: for warnings, keep a weather radio or your phone's emergency alerts on.

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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.