Iowa alerts

Benton County, Iowa weather alerts

1 National Weather Service alert is in force for Benton County: a flood warning.

Checked Sun, Sep 20, 2026, 8:16 PM CDT. Times are Central Daylight Time.

Benton County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Benton County, Iowa. Open it for the live map, where it pans and zooms.

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

Flood Warning

Severe

Flood Warning issued September 20 at 7:31PM CDT until September 21 at 3:00PM CDT by NWS Quad Cities IA IL

Issued Until 18 hr 44 min left

Areas Benton, IA; Iowa, IA

Full text

...The Flood Warning continues for the following rivers in Iowa... Iowa River at Marengo affecting Benton and Iowa Counties. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River at Marengo. * WHEN...Until Monday afternoon. * IMPACTS...At 15.0 feet, Water reaches the bottom of the levee surrounding Marengo. Water affects low lying agricultural land along the river * ADDITIONAL DETAILS... - At 6:15 PM CDT Sunday the stage was 14.5 feet. - Forecast...The river is expected to rise to a crest of 15.0 feet tomorrow morning. - Flood stage is 15.0 feet.

What to do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. The next statement will be issued by Monday afternoon.

NWS Quad Cities IA ILShare this alert

The past year in Benton County

In the past year the National Weather Service issued 122 alerts for Benton County, including 24 severe thunderstorm warnings, 7 flood warnings, 4 winter storm warnings and 3 flash flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning24Sep 8, 2026
Flood Warning7Sep 20, 2026
Winter Storm Warning4Feb 19, 2026
Flash Flood Warning3Sep 20, 2026
Freeze Warning3Apr 20, 2026
Blizzard Warning2Mar 15, 2026
Extreme Heat Warning2Jul 26, 2026
High Wind Warning2Mar 15, 2026
Red Flag Warning2Mar 28, 2026
Extreme Cold Warning1Jan 22, 2026
Tornado Warning1Apr 17, 2026
Severe Thunderstorm Watch10Aug 13, 2026
Flood Watch9Sep 19, 2026
Tornado Watch7Jul 20, 2026
Extreme Heat Watch2Jul 26, 2026
High Wind Watch2Mar 15, 2026
Winter Storm Watch2Mar 15, 2026
Extreme Cold Watch1Jan 23, 2026
Fire Weather Watch1Feb 18, 2026
Dense Fog Advisory14Sep 17, 2026
Winter Weather Advisory8Mar 16, 2026
Wind Advisory6Mar 12, 2026
Cold Weather Advisory4Jan 25, 2026
Frost Advisory3May 7, 2026
Heat Advisory2Sep 1, 2026

Warnings issued

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

The 40 most recent of 122.

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 Benton 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.