Clarke County weather alerts
There are no active weather alerts for Clarke County, IA right now.
Since 2016 the National Weather Service has issued about 814 alerts that included Clarke County, roughly 81 a year. The most common is the severe thunderstorm warning (158 from 2016 to 2025). The last tornado warning was issued on June 6, 2026. 19 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 Clarke County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Warren County, Union County, Madison County, Decatur County.
Clarke County alert history
Alert events that included Clarke County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 158 | 13 | June 11, 2026 |
| Dense Fog Advisory | 109 | 6 | September 17, 2026 |
| Severe Thunderstorm Watch | 81 | 10 | September 6, 2026 |
| Winter Weather Advisory | 72 | 2 | April 7, 2026 |
| Wind Advisory | 70 | 3 | April 8, 2026 |
| Heat Advisory | 48 | 3 | August 31, 2026 |
| Flood Watch | 42 | 8 | September 30, 2026 |
| Tornado Watch | 36 | 10 | September 14, 2026 |
| Cold Weather Advisory | 35 | 3 | January 26, 2026 |
| Freeze Warning | 20 | 1 | October 17, 2026 |
| Winter Storm Watch | 19 | 0 | November 29, 2025 |
| Red Flag Warning | 18 | 5 | March 28, 2026 |
| Winter Storm Warning | 18 | 0 | November 28, 2025 |
| Tornado Warning | 15 | 4 | June 6, 2026 |
| Frost Advisory | 12 | 1 | May 2, 2026 |
| Extreme Heat Watch | 9 | 2 | July 27, 2026 |
| Extreme Heat Warning | 7 | 2 | July 26, 2026 |
| Freeze Watch | 7 | 1 | October 17, 2026 |
| Fire Weather Watch | 7 | 2 | March 28, 2026 |
| Extreme Cold Warning | 6 | 1 | January 23, 2026 |
| High Wind Warning | 5 | 3 | May 17, 2026 |
| Flash Flood Warning | 4 | 2 | August 5, 2026 |
| Blizzard Warning | 4 | 1 | March 15, 2026 |
| Flood Warning | 4 | 0 | March 14, 2019 |
| Extreme Cold Watch | 3 | 1 | January 23, 2026 |
| High Wind Watch | 3 | 2 | March 15, 2026 |
| Ice Storm Warning | 1 | 0 | January 15, 2017 |
| Snow Squall Warning | 1 | 0 | January 11, 2024 |
Tornado history in Clarke County
19 tornadoes have been recorded in Clarke County since 1950. That ranks 90 of 99 counties in Iowa. The most recent was on May 6, 2024 (rated EF0).
Strongest tornadoes in Clarke County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 22, 1964 | F2 | Clarke County | 12.8 mi | 400 yd | 0 | 0 |
| May 7, 1975 | F2 | Clarke County | 10 mi | 10 yd | 0 | 0 |
| June 9, 1967 | F2 | Clarke County | 7.8 mi | 300 yd | 0 | 0 |
| April 26, 2024 | EF2 | Clarke County | 5.8 mi | 75 yd | 0 | 0 |
| September 20, 1965 | F2 | Clarke County | 3.3 mi | 150 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 6, 2024 | EF0 | Clarke County | 2 mi | 80 yd | 0 | 0 |
| May 6, 2024 | EF1 | Clarke County | 6.2 mi | 80 yd | 0 | 0 |
| April 26, 2024 | EF2 | Clarke County | 5.8 mi | 75 yd | 0 | 0 |
| October 8, 2018 | EF1 | Clarke County | 4.9 mi | 250 yd | 0 | 0 |
| March 27, 2014 | EF0 | Clarke County | 0.7 mi | 75 yd | 0 | 0 |
About Clarke County
- Population: 9,524 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019039 (how to use it)