Illinois alerts

Monroe County, Illinois weather alerts

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

Checked Sun, Sep 20, 2026, 5:21 PM CDT. Times are Central Daylight Time.

Monroe County forecastLive radar here

Warnings on the map

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

In the past year the National Weather Service issued 82 alerts for Monroe County, including 10 severe thunderstorm warnings, 4 extreme heat warnings, 3 flash flood warnings and 2 freeze warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning10Sep 9, 2026
Extreme Heat Warning4Sep 3, 2026
Flash Flood Warning3Jul 10, 2026
Freeze Warning2Mar 28, 2026
Tornado Warning2Mar 15, 2026
Extreme Cold Warning1Jan 26, 2026
Flood Warning1Apr 29, 2026
Red Flag Warning1Mar 29, 2026
Winter Storm Warning1Jan 24, 2026
Flood Watch7Aug 5, 2026
Severe Thunderstorm Watch7Jul 10, 2026
Tornado Watch6Jun 21, 2026
Extreme Heat Watch4Aug 31, 2026
Freeze Watch1Nov 2, 2025
Winter Storm Watch1Jan 24, 2026
Dense Fog Advisory9May 9, 2026
Heat Advisory6Sep 15, 2026
Wind Advisory6Jun 17, 2026
Cold Weather Advisory4Jan 26, 2026
Flood Advisory4Jul 31, 2026
Winter Weather Advisory2Dec 1, 2025

Warnings issued

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

The 40 most recent of 82.

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 Monroe 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.