Iowa alerts

Clayton County, Iowa weather alerts

2 National Weather Service alerts are in force for Clayton County: 2 flood warnings.

Checked Sun, Sep 20, 2026, 1:41 PM CDT. Times are Central Daylight Time.

Clayton County forecastLive radar here

Warnings on the map

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

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

Flood Warning

Severe

Flood Warning issued September 20 at 12:56PM CDT until September 21 at 12:00AM CDT by NWS La Crosse WI

Issued Until 10 hr 18 min left

Areas Clayton, IA

Full text

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Southwestern Clayton County in northeastern Iowa along the Volga River... * WHEN...Until midnight CDT Tonight. * IMPACTS...Minor to moderate flooding along the Volga River. * ADDITIONAL DETAILS... - At 1253 PM CDT, flooding continues on the Volga River in southwestern Clayton County. The river has crested and is starting to fall, and is expected to fall below flood stage later tonight. Gauge reports indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. - Some locations that will experience flooding include... Volga, Highway 13 And County C 24, Osborne, Mederville, Communia and Littleport. - http://www.weather.gov/safety/flood

What to do

Be aware of your surroundings and do not drive on flooded roads.

NWS La Crosse WIShare this alert

Flood Warning

Severe

Flood Warning issued September 20 at 8:57AM CDT until September 21 at 1:30PM CDT by NWS La Crosse WI

Issued Until 23 hr 48 min left

Areas Clayton, IA

Full text

...The Flood Warning continues for the following rivers in Iowa... Turkey River at Garber affecting Clayton County. ...The Flood Warning is extended for the following rivers in Iowa... Turkey River at Spillville affecting Winneshiek County. Turkey River at Elkader affecting Clayton County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Turkey River at Garber. * WHEN...Until Monday afternoon. * ADDITIONAL DETAILS... - At 8:15 AM CDT Sunday the stage was 21.7 feet. - Bankfull stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:15 AM CDT Sunday was 22.3 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 8.0 feet Sunday, September 27. - Flood stage is 17.0 feet. - Flood History...This crest compares to a previous crest of 21.7 feet on 03/19/1948. - http://www.weather.gov/safety/flood

What to do

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional river and weather information is available at www.weather.gov/lacrosse. The next statement will be issued late tonight by midnight CDT.

NWS La Crosse WIShare this alert

The past year in Clayton County

In the past year the National Weather Service issued 99 alerts for Clayton County, including 15 severe thunderstorm warnings, 5 flood warnings, 4 tornado warnings and 2 extreme heat warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning15Sep 4, 2026
Flood Warning5Sep 19, 2026
Tornado Warning4Jul 2, 2026
Extreme Heat Warning2Jul 26, 2026
Freeze Warning2May 2, 2026
Red Flag Warning2Mar 28, 2026
Winter Storm Warning2Feb 19, 2026
Blizzard Warning1Mar 15, 2026
Extreme Cold Warning1Jan 22, 2026
Flash Flood Warning1Sep 19, 2026
High Wind Warning1Mar 13, 2026
Severe Thunderstorm Watch12Aug 21, 2026
Flood Watch5Sep 18, 2026
Tornado Watch3Jul 20, 2026
Extreme Heat Watch2Jul 26, 2026
Winter Storm Watch2Mar 15, 2026
Extreme Cold Watch1Jan 23, 2026
Fire Weather Watch1Feb 18, 2026
High Wind Watch1Mar 13, 2026
Winter Weather Advisory10Mar 16, 2026
Dense Fog Advisory9Aug 7, 2026
Frost Advisory5May 11, 2026
Wind Advisory5May 12, 2026
Cold Weather Advisory4Jan 26, 2026
Heat Advisory3Sep 4, 2026

Warnings issued

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

The 40 most recent of 99.

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 Clayton 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.