Illinois alerts

Hancock County, Illinois weather alerts

2 National Weather Service alerts are in force for Hancock County: 2 flood watches.

Checked Sun, Sep 20, 2026, 4:23 PM CDT. Times are Central Daylight Time.

Hancock County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Hancock 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 Hancock 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 force2

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

Flood Watch

Severe

Flood Watch issued September 20 at 11:44AM CDT until September 26 at 2:00PM CDT by NWS Quad Cities IA IL

Begins Until 6 days left

Areas Hancock, IL; Clark, MO

Full text

...The Flood Watch continues for the following rivers in Missouri... Illinois... Mississippi River at Gregory Landing affecting Hancock and Clark Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Gregory Landing. * WHEN...From Tuesday afternoon to Saturday afternoon. * ADDITIONAL DETAILS... - At 11:30 AM CDT Sunday the stage was 7.8 feet and steady. - Forecast...Rises on the river are likely through the first half of this week. The river may reach flood stage. - Flood stage is 15.0 feet.

What to do

If you are in the watch area, remain alert to possible flooding. Residents and those with interests near the river should monitor rising water levels and be prepared for possible Flood Warnings. Additional information is available at www.weather.gov/quadcities. The next statement will be issued by Monday morning.

NWS Quad Cities IA ILShare this alert

Flood Watch

Severe

Flood Watch issued September 20 at 11:18AM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL

Begins Until 5 days left

Areas Des Moines, IA; Lee, IA; Henderson, IL; Hancock, IL

Full text

...The Flood Watch continues for the following rivers in Illinois... Iowa... Mississippi River at Keithsburg affecting Louisa, Des Moines, Mercer and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Mississippi River at Burlington affecting Hancock, Des Moines, Lee and Henderson Counties. .Additional rainfall from today through Monday night is expected to be considerably lighter than what fell Thursday through Saturday night. This helps provide higher confidence in these river forecasts compared to 24 hours ago. * WHAT...Flooding is possible. * WHERE...Mississippi River at Burlington. * WHEN...From Wednesday morning to Friday afternoon. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 10.0 feet and rising. - Forecast...Flood stage may be reached late Wednesday morning. - Flood stage is 15.0 feet.

What to do

If you are in the watch area, remain alert to possible flooding. Residents and those with interests near the river should monitor rising water levels and be prepared for possible Flood Warnings. The next statement will be issued by Monday morning.

NWS Quad Cities IA ILShare this alert

The past year in Hancock County

In the past year the National Weather Service issued 129 alerts for Hancock County, including 27 severe thunderstorm warnings, 9 flood warnings, 7 tornado warnings and 4 flash flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning27Aug 15, 2026
Flood Warning9Aug 15, 2026
Tornado Warning7Jun 11, 2026
Flash Flood Warning4Aug 15, 2026
Extreme Heat Warning3Sep 2, 2026
Red Flag Warning3Mar 28, 2026
Freeze Warning2Apr 20, 2026
Extreme Cold Warning1Jan 23, 2026
Winter Storm Warning1Nov 29, 2025
Flood Watch11Aug 16, 2026
Tornado Watch10Jun 17, 2026
Severe Thunderstorm Watch5Aug 13, 2026
Extreme Heat Watch2Jul 26, 2026
Extreme Cold Watch1Jan 23, 2026
Fire Weather Watch1Feb 27, 2026
Winter Storm Watch1Nov 29, 2025
Dense Fog Advisory14Sep 11, 2026
Wind Advisory8Apr 2, 2026
Heat Advisory7Aug 31, 2026
Winter Weather Advisory7Mar 16, 2026
Cold Weather Advisory4Jan 26, 2026
Frost Advisory1Oct 23, 2025

Warnings issued

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

The 40 most recent of 129.

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 Hancock 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.