Louisa County weather alerts
There are no active weather alerts for Louisa County, IA right now.
Since 2016 the National Weather Service has issued about 969 alerts that included Louisa County, roughly 97 a year. The most common is the flood warning (153 from 2016 to 2025). The last tornado warning was issued on August 19, 2026. 17 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 Louisa County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Henry County, Washington County, Muscatine County, Des Moines County.
Louisa County alert history
Alert events that included Louisa County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 153 | 32 | October 2, 2026 |
| Severe Thunderstorm Warning | 146 | 31 | September 20, 2026 |
| Dense Fog Advisory | 101 | 4 | September 11, 2026 |
| Winter Weather Advisory | 92 | 2 | March 16, 2026 |
| Wind Advisory | 71 | 3 | April 2, 2026 |
| Severe Thunderstorm Watch | 64 | 9 | August 13, 2026 |
| Heat Advisory | 50 | 6 | August 31, 2026 |
| Flood Watch | 47 | 10 | September 30, 2026 |
| Cold Weather Advisory | 35 | 3 | January 26, 2026 |
| Tornado Watch | 28 | 10 | July 20, 2026 |
| Freeze Warning | 22 | 1 | April 20, 2026 |
| Winter Storm Warning | 19 | 0 | November 29, 2025 |
| Frost Advisory | 18 | 2 | October 17, 2026 |
| Winter Storm Watch | 18 | 1 | March 16, 2026 |
| Flash Flood Warning | 17 | 4 | September 20, 2026 |
| Tornado Warning | 17 | 5 | August 19, 2026 |
| Red Flag Warning | 16 | 3 | March 28, 2026 |
| Extreme Heat Warning | 12 | 3 | September 2, 2026 |
| Extreme Heat Watch | 8 | 2 | July 27, 2026 |
| Freeze Watch | 7 | 0 | October 16, 2024 |
| Extreme Cold Warning | 5 | 1 | January 23, 2026 |
| High Wind Warning | 5 | 2 | March 15, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Fire Weather Watch | 4 | 2 | February 27, 2026 |
| High Wind Watch | 3 | 1 | March 15, 2026 |
| Blizzard Warning | 2 | 1 | March 15, 2026 |
| Ice Storm Warning | 2 | 0 | December 14, 2024 |
| Snow Squall Warning | 2 | 0 | February 19, 2022 |
| Flood Advisory | 1 | 0 | July 25, 2025 |
Tornado history in Louisa County
17 tornadoes have been recorded in Louisa County since 1950, injuring 10 people. That ranks 91 of 99 counties in Iowa. The most recent was on April 16, 2024 (rated EF2).
Strongest tornadoes in Louisa County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 1, 2007 | EF3 | Louisa County | 15.8 mi | 774 yd | 0 | 7 |
| April 30, 1954 | F2 | Lee County | 85.2 mi | 200 yd | 0 | 1 |
| April 16, 2024 | EF2 | Lee County | 41.7 mi | 600 yd | 0 | 0 |
| January 24, 1967 | F2 | Louisa County | 3 mi | 250 yd | 0 | 0 |
| January 24, 1967 | F2 | Louisa County | 2 mi | 150 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 16, 2024 | EF2 | Lee County | 41.7 mi | 600 yd | 0 | 0 |
| March 6, 2017 | EF2 | Louisa County | 0.3 mi | 150 yd | 0 | 0 |
| May 9, 2016 | EF0 | Louisa County | 0.1 mi | 10 yd | 0 | 0 |
| June 1, 2007 | EF3 | Louisa County | 15.8 mi | 774 yd | 0 | 7 |
| May 10, 2003 | F1 | Henry County | 27.9 mi | 200 yd | 0 | 0 |
About Louisa County
- Population: 10,630 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019115 (how to use it)