Calhoun County weather alerts
There are no active weather alerts for Calhoun County, IA right now.
Since 2016 the National Weather Service has issued about 834 alerts that included Calhoun County, roughly 83 a year. The most common is the severe thunderstorm warning (152 from 2016 to 2025). The last tornado warning was issued on May 18, 2026. 41 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 Calhoun County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Webster County, Carroll County, Greene County, Pocahontas County.
Calhoun County alert history
Alert events that included Calhoun County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 152 | 27 | October 9, 2026 |
| Winter Weather Advisory | 97 | 5 | March 16, 2026 |
| Wind Advisory | 88 | 4 | June 17, 2026 |
| Dense Fog Advisory | 81 | 6 | September 17, 2026 |
| Severe Thunderstorm Watch | 68 | 13 | August 18, 2026 |
| Cold Weather Advisory | 53 | 4 | March 16, 2026 |
| Heat Advisory | 33 | 4 | August 31, 2026 |
| Flood Watch | 29 | 5 | September 30, 2026 |
| Winter Storm Watch | 28 | 1 | March 15, 2026 |
| Tornado Watch | 24 | 3 | May 18, 2026 |
| Winter Storm Warning | 22 | 0 | December 6, 2025 |
| Red Flag Warning | 22 | 4 | March 28, 2026 |
| Tornado Warning | 19 | 3 | May 18, 2026 |
| Freeze Warning | 17 | 2 | October 17, 2026 |
| Blizzard Warning | 14 | 1 | March 15, 2026 |
| Frost Advisory | 14 | 1 | May 2, 2026 |
| Extreme Cold Warning | 12 | 1 | January 23, 2026 |
| High Wind Warning | 11 | 3 | March 15, 2026 |
| Fire Weather Watch | 11 | 2 | March 28, 2026 |
| Extreme Heat Watch | 8 | 2 | July 27, 2026 |
| Extreme Heat Warning | 7 | 2 | July 26, 2026 |
| Flash Flood Warning | 7 | 2 | October 1, 2026 |
| Freeze Watch | 4 | 1 | October 17, 2026 |
| High Wind Watch | 4 | 2 | March 15, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Flood Warning | 3 | 0 | March 16, 2019 |
| Ice Storm Warning | 2 | 0 | January 3, 2023 |
Tornado history in Calhoun County
41 tornadoes have been recorded in Calhoun County since 1950, killing 4 people and injuring 26. That ranks 30 of 99 counties in Iowa. The most recent was on April 16, 2024 (rated unknown).
Strongest tornadoes in Calhoun County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 28, 1979 | F4 | Pocahontas County | 14.9 mi | 33 yd | 3 | 26 |
| June 9, 1954 | F4 | Calhoun County | 9.9 mi | 440 yd | 1 | 0 |
| May 27, 1995 | F4 | Carroll County | 36 mi | 400 yd | 0 | 0 |
| May 5, 1965 | F4 | Calhoun County | 9.9 mi | 200 yd | 0 | 0 |
| June 7, 1953 | F3 | Calhoun County | 30.7 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 16, 2024 | ? | Calhoun County | 0.6 mi | 30 yd | 0 | 0 |
| April 16, 2024 | EF1 | Calhoun County | 5.2 mi | 75 yd | 0 | 0 |
| May 13, 2023 | EF0 | Calhoun County | 1.4 mi | 50 yd | 0 | 0 |
| May 13, 2023 | ? | Calhoun County | 0.6 mi | 30 yd | 0 | 0 |
| December 15, 2021 | EF2 | Calhoun County | 18 mi | 80 yd | 0 | 0 |
About Calhoun County
- Population: 9,711 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019025 (how to use it)