Clayton County weather alerts
There are no active weather alerts for Clayton County, IA right now.
Since 2016 the National Weather Service has issued about 772 alerts that included Clayton County, roughly 77 a year. The most common is the winter weather advisory (99 from 2016 to 2025). The last tornado warning was issued on July 2, 2026. 15 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Clayton County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Delaware County, Fayette County, Dubuque County, Crawford County.
Clayton County alert history
Alert events that included Clayton County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 99 | 5 | March 16, 2026 |
| Flood Warning | 87 | 5 | September 19, 2026 |
| Severe Thunderstorm Warning | 84 | 15 | October 13, 2026 |
| Dense Fog Advisory | 80 | 4 | August 7, 2026 |
| Severe Thunderstorm Watch | 65 | 12 | August 21, 2026 |
| Cold Weather Advisory | 47 | 3 | January 26, 2026 |
| Wind Advisory | 46 | 3 | May 12, 2026 |
| Flood Watch | 39 | 3 | September 19, 2026 |
| Heat Advisory | 29 | 3 | September 4, 2026 |
| Flash Flood Warning | 25 | 1 | September 19, 2026 |
| Winter Storm Watch | 25 | 1 | March 15, 2026 |
| Winter Storm Warning | 25 | 1 | February 20, 2026 |
| Frost Advisory | 23 | 4 | May 11, 2026 |
| Tornado Watch | 19 | 3 | July 20, 2026 |
| Freeze Warning | 17 | 2 | October 17, 2026 |
| Flood Advisory | 12 | 0 | July 11, 2025 |
| Tornado Warning | 9 | 4 | July 2, 2026 |
| Red Flag Warning | 9 | 2 | March 28, 2026 |
| Extreme Heat Warning | 6 | 2 | July 26, 2026 |
| Extreme Cold Warning | 6 | 1 | January 23, 2026 |
| Extreme Heat Watch | 4 | 2 | July 27, 2026 |
| High Wind Warning | 3 | 1 | March 13, 2026 |
| Freeze Watch | 3 | 1 | October 17, 2026 |
| High Wind Watch | 2 | 1 | March 13, 2026 |
| Extreme Cold Watch | 2 | 1 | January 23, 2026 |
| Blizzard Warning | 2 | 1 | March 15, 2026 |
| Fire Weather Watch | 2 | 1 | February 18, 2026 |
| Ice Storm Warning | 2 | 0 | December 14, 2024 |
Tornado history in Clayton County
15 tornadoes have been recorded in Clayton County since 1950, injuring 3 people. That ranks 95 of 99 counties in Iowa. The most recent was on March 31, 2023 (rated EF1).
Strongest tornadoes in Clayton County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 30, 1954 | F4 | Linn County | 80.4 mi | 200 yd | 0 | 0 |
| May 10, 1953 | F3 | Clayton County | 6.6 mi | 400 yd | 0 | 0 |
| June 13, 1990 | F2 | Clayton County | 8 mi | 67 yd | 0 | 0 |
| August 25, 1965 | F2 | Clayton County | 4.7 mi | 100 yd | 0 | 0 |
| March 31, 2007 | EF1 | Delaware County | 11.9 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 31, 2023 | EF1 | Delaware County | 11.1 mi | 90 yd | 0 | 0 |
| September 12, 2019 | EF0 | Clayton County | 4.2 mi | 40 yd | 0 | 0 |
| July 19, 2017 | EF1 | Clayton County | 5.8 mi | 400 yd | 0 | 2 |
| March 31, 2007 | EF1 | Delaware County | 11.9 mi | 200 yd | 0 | 0 |
| May 10, 2001 | F0 | Clayton County | 1 mi | 75 yd | 0 | 0 |
About Clayton County
- Population: 16,931 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019043 (how to use it)