Indiana alerts

Johnson County, Indiana weather alerts

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

Checked Sun, Sep 20, 2026, 6:26 PM EDT. Times are Eastern Daylight Time.

Johnson County forecastLive radar here

Warnings on the map

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

Every watch, warning and advisory the National Weather Service has in force over Johnson County, Indiana 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 Johnson 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 Johnson County

In the past year the National Weather Service issued 182 alerts for Johnson County, including 41 severe thunderstorm warnings, 25 flood warnings, 8 tornado warnings and 3 freeze warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning41Sep 16, 2026
Flood Warning25Aug 21, 2026
Tornado Warning8Jun 17, 2026
Freeze Warning3Apr 20, 2026
Extreme Cold Warning2Jan 27, 2026
Winter Storm Warning2Jan 24, 2026
Extreme Heat Warning1Jun 30, 2026
Flash Flood Warning1Aug 12, 2026
High Wind Warning1Mar 15, 2026
Severe Thunderstorm Watch16Aug 16, 2026
Flood Watch11Sep 17, 2026
Tornado Watch6Jun 21, 2026
Freeze Watch3Apr 20, 2026
Winter Storm Watch1Jan 24, 2026
Flood Advisory18Aug 19, 2026
Dense Fog Advisory11Aug 13, 2026
Wind Advisory10Apr 2, 2026
Cold Weather Advisory8Feb 1, 2026
Winter Weather Advisory6Mar 2, 2026
Frost Advisory4May 3, 2026
Heat Advisory4Sep 1, 2026

Warnings issued

  1. Severe Thunderstorm Warning
  2. Severe Thunderstorm Warning
  3. Flood Warning
  4. Severe Thunderstorm Warning
  5. Severe Thunderstorm Warning
  6. Flood Warning
  7. Flood Warning
  8. Flood Warning
  9. Severe Thunderstorm Warning
  10. Flash Flood Warning
  11. Severe Thunderstorm Warning
  12. Severe Thunderstorm Warning
  13. Severe Thunderstorm Warning
  14. Severe Thunderstorm Warning
  15. Severe Thunderstorm Warning
  16. Flood Warning
  17. Flood Warning
  18. Severe Thunderstorm Warning
  19. Severe Thunderstorm Warning
  20. Extreme Heat Warning
  21. Severe Thunderstorm Warning
  22. Severe Thunderstorm Warning
  23. Flood Warning
  24. Flood Warning
  25. Severe Thunderstorm Warning
  26. Severe Thunderstorm Warning
  27. Tornado Warning
  28. Tornado Warning
  29. Severe Thunderstorm Warning
  30. Severe Thunderstorm Warning
  31. Severe Thunderstorm Warning
  32. Tornado Warning
  33. Severe Thunderstorm Warning
  34. Tornado Warning
  35. Tornado Warning
  36. Severe Thunderstorm Warning
  37. Severe Thunderstorm Warning
  38. Flood Warning
  39. Flood Warning
  40. Flood Warning
  41. Flood Warning
  42. Flood Warning
  43. Flood Warning
  44. Flood Warning
  45. Severe Thunderstorm Warning
  46. Flood Warning
  47. Flood Warning
  48. Tornado Warning
  49. Severe Thunderstorm Warning
  50. Tornado Warning
  51. Severe Thunderstorm Warning
  52. Severe Thunderstorm Warning
  53. Freeze Warning
  54. Freeze Warning
  55. Severe Thunderstorm Warning
  56. Severe Thunderstorm Warning
  57. Severe Thunderstorm Warning
  58. Severe Thunderstorm Warning
  59. Severe Thunderstorm Warning
  60. Severe Thunderstorm Warning

And 24 earlier warnings.

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

The 40 most recent of 182.

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 Johnson 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.