Illinois alerts

Perry County, Illinois weather alerts

1 National Weather Service alert is in force for Perry County: a heat advisory.

Checked Sun, Sep 20, 2026, 3:19 PM CDT. Times are Central Daylight Time.

Perry County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Perry 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 Perry 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 force1

Every product in force for Perry County, worst first, with its full text.

Heat Advisory

Moderate

Heat Advisory issued September 20 at 4:20AM CDT until September 20 at 7:00PM CDT by NWS Paducah KY

Issued Until 3 hr 40 min left

Areas Jefferson, IL; Wayne, IL; Edwards, IL; Wabash, IL; Perry, IL; Franklin, IL; Hamilton, IL; White, IL; Jackson, IL; Williamson, IL; Saline, IL; Gallatin, IL; Union, IL; Johnson, IL; Pope, IL; Hardin, IL; Alexander, IL; Pulaski, IL; Massac, IL; Gibson, IN; Pike, IN; Posey, IN; Vanderburgh, IN; Warrick, IN; Spencer, IN; Fulton, KY; Hickman, KY; Carlisle, KY; Ballard, KY; McCracken, KY; Graves, KY; Livingston, KY; Marshall, KY; Calloway, KY; Crittenden, KY; Lyon, KY; Trigg, KY; Caldwell, KY; Union, KY; Webster, KY; Hopkins, KY; Christian, KY; Henderson, KY; Daviess, KY; McLean, KY; Muhlenberg, KY; Todd, KY; Perry, MO; Bollinger, MO; Cape Girardeau, MO; Wayne, MO; Carter, MO; Ripley, MO; Butler, MO; Stoddard, MO; Scott, MO; Mississippi, MO; New Madrid, MO

Full text

* WHAT...Heat index values up to 102 degrees are expected. * WHERE...all of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...Until 7 PM CDT /8 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

What to do

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

NWS Paducah KYShare this alert

The past year in Perry County

In the past year the National Weather Service issued 89 alerts for Perry County, including 15 severe thunderstorm warnings, 5 extreme heat warnings, 3 tornado warnings and 2 flash flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning15Jul 10, 2026
Extreme Heat Warning5Sep 1, 2026
Tornado Warning3Jun 21, 2026
Flash Flood Warning2Jul 10, 2026
Extreme Cold Warning1Jan 26, 2026
Flood Warning1Jul 11, 2026
Freeze Warning1Mar 28, 2026
High Wind Warning1Mar 15, 2026
Red Flag Warning1Mar 29, 2026
Winter Storm Warning1Jan 24, 2026
Tornado Watch6Jun 21, 2026
Flood Watch5Jul 9, 2026
Severe Thunderstorm Watch5Jul 10, 2026
Extreme Heat Watch2Sep 1, 2026
Freeze Watch1Nov 2, 2025
Winter Storm Watch1Jan 24, 2026
Heat Advisory10Sep 15, 2026
Dense Fog Advisory8Mar 6, 2026
Wind Advisory7Jun 17, 2026
Flood Advisory6Aug 16, 2026
Cold Weather Advisory3Jan 30, 2026
Lake Wind Advisory2May 4, 2026
Frost Advisory1Oct 24, 2025
Winter Weather Advisory1Dec 1, 2025

Warnings issued

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

The 40 most recent of 89.

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 Perry 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.