Boone County weather alerts
There are no active weather alerts for Boone County, IA right now.
Since 2016 the National Weather Service has issued about 876 alerts that included Boone County, roughly 88 a year. The most common is the severe thunderstorm warning (174 from 2016 to 2025). The last tornado warning was issued on June 11, 2026. 58 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 Boone County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Webster County, Hamilton County, Polk County, Greene County.
Boone County alert history
Alert events that included Boone County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 174 | 33 | October 9, 2026 |
| Winter Weather Advisory | 101 | 3 | March 16, 2026 |
| Dense Fog Advisory | 89 | 6 | September 17, 2026 |
| Wind Advisory | 83 | 3 | April 8, 2026 |
| Severe Thunderstorm Watch | 75 | 12 | September 6, 2026 |
| Cold Weather Advisory | 51 | 4 | March 16, 2026 |
| Heat Advisory | 36 | 4 | August 31, 2026 |
| Flood Watch | 33 | 6 | September 30, 2026 |
| Tornado Watch | 31 | 6 | September 14, 2026 |
| Winter Storm Watch | 22 | 1 | March 15, 2026 |
| Tornado Warning | 22 | 2 | June 11, 2026 |
| Winter Storm Warning | 20 | 1 | February 19, 2026 |
| Freeze Warning | 19 | 3 | October 17, 2026 |
| Flood Warning | 17 | 1 | July 4, 2026 |
| Red Flag Warning | 17 | 4 | March 28, 2026 |
| Frost Advisory | 12 | 1 | May 2, 2026 |
| Flash Flood Warning | 11 | 2 | July 21, 2026 |
| Extreme Heat Watch | 9 | 2 | July 27, 2026 |
| Extreme Cold Warning | 9 | 1 | January 23, 2026 |
| High Wind Warning | 8 | 3 | March 15, 2026 |
| Blizzard Warning | 7 | 1 | March 15, 2026 |
| Extreme Heat Warning | 6 | 2 | July 26, 2026 |
| Freeze Watch | 6 | 1 | October 17, 2026 |
| Snow Squall Warning | 5 | 0 | December 28, 2025 |
| High Wind Watch | 4 | 2 | March 15, 2026 |
| Fire Weather Watch | 4 | 2 | March 28, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Ice Storm Warning | 1 | 0 | January 15, 2017 |
Tornado history in Boone County
58 tornadoes have been recorded in Boone County since 1950, killing 1 people and injuring 101. That ranks 7 of 99 counties in Iowa. The most recent was on July 19, 2025 (rated unknown).
Strongest tornadoes in Boone County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 13, 1976 | F5 | Boone County | 21.3 mi | 880 yd | 0 | 9 |
| May 10, 1959 | F4 | Adair County | 41.1 mi | 400 yd | 0 | 1 |
| November 12, 2005 | F3 | Boone County | 17.6 mi | 150 yd | 1 | 3 |
| June 13, 1976 | F3 | Dallas County | 17.9 mi | 100 yd | 0 | 0 |
| June 13, 1976 | F3 | Boone County | 0.1 mi | 333 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 19, 2025 | ? | Boone County | 4.5 mi | 40 yd | 0 | 0 |
| May 24, 2024 | EF0 | Boone County | 10.7 mi | 180 yd | 0 | 0 |
| April 23, 2022 | ? | Polk County | 3.9 mi | 60 yd | 0 | 0 |
| April 23, 2022 | EF1 | Polk County | 9.1 mi | 80 yd | 0 | 0 |
| December 15, 2021 | EF2 | Boone County | 16.3 mi | 125 yd | 0 | 0 |
About Boone County
- Population: 26,729 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019015 (how to use it)