Illinois alerts

Will County, Illinois weather alerts

1 National Weather Service alert is in force for Will County: a special weather statement.

Checked Sun, Sep 27, 2026, 7:08 AM CDT. Times are Central Daylight Time.

Will County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Will 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 Will 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 Will County, worst first, with its full text.

Special Weather Statement

Moderate

Special Weather Statement issued September 27 at 7:04AM CDT by NWS Chicago IL

Issued Until 2 hr 22 min left

Areas Boone, IL; McHenry, IL; Lake, IL; De Kalb, IL; Kane, IL; DuPage, IL; Kendall, IL; Grundy, IL; Kankakee, IL; Northern Cook, IL; Southern Cook, IL; Northern Will, IL; Southern Will, IL; Eastern Will, IL; Lake, IN; Porter, IN

Full text

Locally dense fog will reduce visibilities down to one quarter mile or less early this morning over portions of northeast Illinois and northwets Indiana outside of Chicago. Fog will gradually erode through mid-morning. Increase following distance and use your low beams if dense fog is encountered while driving this morning.

NWS Chicago ILShare this alert

The past year in Will County

In the past year the National Weather Service issued 232 alerts for Will County, including 51 severe thunderstorm warnings, 16 flood warnings, 12 flash flood warnings and 12 tornado warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning51Aug 12, 2026
Flood Warning16Aug 2, 2026
Flash Flood Warning12Aug 12, 2026
Tornado Warning12Aug 11, 2026
Extreme Heat Warning2Jul 27, 2026
Freeze Warning2Apr 20, 2026
High Wind Warning2Jun 11, 2026
Winter Storm Warning2Nov 29, 2025
Extreme Cold Warning1Jan 23, 2026
Red Flag Warning1Feb 18, 2026
Snow Squall Warning1Jan 14, 2026
Severe Thunderstorm Watch20Aug 21, 2026
Flood Watch16Sep 20, 2026
Tornado Watch3Jun 11, 2026
High Wind Watch2Mar 15, 2026
Winter Storm Watch2Nov 29, 2025
Extreme Cold Watch1Jan 23, 2026
Fire Weather Watch1Feb 18, 2026
Freeze Watch1Apr 20, 2026
Flood Advisory43Sep 20, 2026
Dense Fog Advisory12Sep 10, 2026
Winter Weather Advisory8Mar 16, 2026
Wind Advisory7Apr 27, 2026
Heat Advisory5Sep 4, 2026
Cold Weather Advisory4Jan 26, 2026
Frost Advisory3May 7, 2026
Blowing Dust Advisory2May 12, 2026

Warnings issued

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

And 42 earlier warnings.

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

The 40 most recent of 232.

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 links to the alert's own page, with its text, map, radar and sounding.

Every alert in Will County since 1986

Nearby

The counties around Will 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.

Follow these alerts

Alerts for Will County in your reader or calendar.

The alerts on this page as a feed, updated every minute, for a feed reader or an app that reads Atom or RSS, and as a calendar where each alert runs from when it takes effect to when it ends. A feed or a calendar is not a warning siren: for warnings, keep a weather radio or your phone's emergency alerts on.

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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.