Mahaska County weather alerts
There are no active weather alerts for Mahaska County, IA right now.
Since 2016 the National Weather Service has issued about 815 alerts that included Mahaska County, roughly 82 a year. The most common is the severe thunderstorm warning (147 from 2016 to 2025). The last tornado warning was issued on June 11, 2026. 27 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 Mahaska County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Wapello County, Marion County, Poweshiek County, Keokuk County.
Mahaska County alert history
Alert events that included Mahaska County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 147 | 28 | October 9, 2026 |
| Dense Fog Advisory | 104 | 5 | September 17, 2026 |
| Winter Weather Advisory | 83 | 1 | March 16, 2026 |
| Severe Thunderstorm Watch | 74 | 10 | August 13, 2026 |
| Wind Advisory | 71 | 3 | April 8, 2026 |
| Heat Advisory | 45 | 3 | August 31, 2026 |
| Cold Weather Advisory | 40 | 3 | January 26, 2026 |
| Flood Watch | 36 | 7 | September 30, 2026 |
| Tornado Watch | 32 | 11 | July 20, 2026 |
| Tornado Warning | 27 | 2 | June 11, 2026 |
| Freeze Warning | 22 | 2 | October 17, 2026 |
| Winter Storm Warning | 18 | 0 | November 28, 2025 |
| Winter Storm Watch | 17 | 1 | March 15, 2026 |
| Red Flag Warning | 14 | 3 | March 28, 2026 |
| Flood Warning | 13 | 1 | June 12, 2026 |
| Frost Advisory | 13 | 1 | May 2, 2026 |
| Flash Flood Warning | 9 | 0 | July 20, 2025 |
| Extreme Heat Watch | 8 | 2 | July 27, 2026 |
| Fire Weather Watch | 8 | 2 | March 28, 2026 |
| Extreme Heat Warning | 7 | 2 | July 26, 2026 |
| Freeze Watch | 6 | 1 | October 17, 2026 |
| Extreme Cold Warning | 6 | 1 | January 23, 2026 |
| High Wind Warning | 5 | 3 | May 17, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| High Wind Watch | 3 | 2 | March 15, 2026 |
| Blizzard Warning | 2 | 1 | March 15, 2026 |
| Ice Storm Warning | 1 | 0 | December 14, 2024 |
Tornado history in Mahaska County
27 tornadoes have been recorded in Mahaska County since 1950, injuring 29 people. That ranks 73 of 99 counties in Iowa. The most recent was on July 19, 2018 (rated EF0).
Strongest tornadoes in Mahaska County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 19, 2018 | EF3 | Marion County | 9.2 mi | 800 yd | 0 | 13 |
| September 30, 2007 | EF2 | Marion County | 21.9 mi | 1,250 yd | 0 | 0 |
| May 30, 2008 | EF2 | Marion County | 19.2 mi | 900 yd | 0 | 10 |
| August 18, 1956 | F2 | Mahaska County | 11.5 mi | 10 yd | 0 | 0 |
| June 27, 1953 | F2 | Mahaska County | 7.8 mi | 100 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 19, 2018 | EF0 | Mahaska County | 1.2 mi | 60 yd | 0 | 0 |
| July 19, 2018 | EF0 | Mahaska County | 1.2 mi | 60 yd | 0 | 0 |
| July 19, 2018 | EF3 | Marion County | 9.2 mi | 800 yd | 0 | 13 |
| November 28, 2016 | EF0 | Mahaska County | 4.5 mi | 40 yd | 0 | 0 |
| November 11, 2015 | EF2 | Mahaska County | 6.6 mi | 150 yd | 0 | 0 |
About Mahaska County
- Population: 22,034 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019123 (how to use it)