Illinois alerts

Knox County, Illinois weather alerts

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

Checked Sun, Sep 20, 2026, 5:23 PM CDT. Times are Central Daylight Time.

Knox County forecastLive radar here

Warnings on the map

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

Every watch, warning and advisory the National Weather Service has in force over Knox County, Illinois 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 Knox 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 Knox County

In the past year the National Weather Service issued 134 alerts for Knox County, including 26 severe thunderstorm warnings, 7 tornado warnings, 6 flash flood warnings and 5 flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning26Aug 12, 2026
Tornado Warning7Aug 9, 2026
Flash Flood Warning6Aug 19, 2026
Flood Warning5Aug 15, 2026
Extreme Heat Warning3Sep 2, 2026
Freeze Warning2Apr 20, 2026
Red Flag Warning2Feb 27, 2026
Blizzard Warning1Mar 15, 2026
Extreme Cold Warning1Jan 23, 2026
Winter Storm Warning1Nov 29, 2025
Flood Watch12Sep 16, 2026
Tornado Watch8Jun 17, 2026
Severe Thunderstorm Watch7Aug 21, 2026
Fire Weather Watch2Feb 27, 2026
Freeze Watch2Apr 20, 2026
Extreme Cold Watch1Jan 23, 2026
Winter Storm Watch1Nov 29, 2025
Dense Fog Advisory14Sep 11, 2026
Wind Advisory9Apr 2, 2026
Winter Weather Advisory6Mar 16, 2026
Heat Advisory5Aug 31, 2026
Cold Weather Advisory4Jan 26, 2026
Flood Advisory4Aug 12, 2026
Blowing Dust Advisory3May 12, 2026
Frost Advisory2Apr 19, 2026

Warnings issued

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

The 40 most recent of 134.

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 Knox 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.