Illinois alerts

Iroquois County, Illinois weather alerts

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

Checked Sun, Sep 20, 2026, 12:46 PM CDT. Times are Central Daylight Time.

Iroquois County forecastLive radar here

Warnings on the map

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

In the past year the National Weather Service issued 135 alerts for Iroquois County, including 20 severe thunderstorm warnings, 11 tornado warnings, 4 flash flood warnings and 3 flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning20Aug 12, 2026
Tornado Warning11Aug 10, 2026
Flash Flood Warning4Aug 15, 2026
Flood Warning3Aug 16, 2026
Extreme Heat Warning2Jul 27, 2026
Freeze Warning2Apr 20, 2026
Snow Squall Warning2Jan 14, 2026
High Wind Warning1Mar 15, 2026
Red Flag Warning1Feb 18, 2026
Winter Storm Warning1Nov 29, 2025
Severe Thunderstorm Watch19Aug 21, 2026
Flood Watch11Aug 19, 2026
Tornado Watch7Jun 17, 2026
Freeze Watch1Apr 20, 2026
High Wind Watch1Mar 15, 2026
Winter Storm Watch1Nov 29, 2025
Flood Advisory10Aug 19, 2026
Dense Fog Advisory9Aug 13, 2026
Heat Advisory7Sep 5, 2026
Wind Advisory7Apr 2, 2026
Cold Weather Advisory5Jan 26, 2026
Winter Weather Advisory5Mar 16, 2026
Frost Advisory3May 2, 2026
Blowing Dust Advisory2May 12, 2026

Warnings issued

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

The 40 most recent of 135.

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 Iroquois 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.