Jasper County weather alerts
There are no active weather alerts for Jasper County, IA right now.
Since 2016 the National Weather Service has issued about 912 alerts that included Jasper County, roughly 91 a year. The most common is the severe thunderstorm warning (216 from 2016 to 2025). The last tornado warning was issued on August 13, 2026. 47 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 Jasper County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Marshall County, Mahaska County, Marion County, Poweshiek County.
Jasper County alert history
Alert events that included Jasper County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 216 | 38 | September 8, 2026 |
| Dense Fog Advisory | 107 | 6 | September 17, 2026 |
| Winter Weather Advisory | 97 | 3 | March 16, 2026 |
| Severe Thunderstorm Watch | 73 | 11 | August 13, 2026 |
| Wind Advisory | 73 | 3 | April 8, 2026 |
| Heat Advisory | 42 | 3 | August 31, 2026 |
| Cold Weather Advisory | 42 | 3 | January 26, 2026 |
| Flood Watch | 33 | 7 | September 30, 2026 |
| Tornado Watch | 31 | 9 | July 20, 2026 |
| Tornado Warning | 31 | 5 | August 13, 2026 |
| Winter Storm Watch | 22 | 1 | March 15, 2026 |
| Freeze Warning | 20 | 2 | October 17, 2026 |
| Winter Storm Warning | 16 | 0 | November 28, 2025 |
| Red Flag Warning | 14 | 3 | March 28, 2026 |
| Frost Advisory | 13 | 1 | May 2, 2026 |
| Flash Flood Warning | 12 | 5 | July 21, 2026 |
| Extreme Heat Watch | 9 | 2 | July 27, 2026 |
| Extreme Cold Warning | 8 | 1 | January 23, 2026 |
| Flood Warning | 8 | 4 | October 4, 2026 |
| Extreme Heat Warning | 7 | 2 | July 26, 2026 |
| Freeze Watch | 7 | 1 | October 17, 2026 |
| Snow Squall Warning | 7 | 0 | December 28, 2025 |
| High Wind Warning | 6 | 4 | May 17, 2026 |
| High Wind Watch | 4 | 1 | March 15, 2026 |
| Fire Weather Watch | 4 | 2 | March 28, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Blizzard Warning | 4 | 1 | March 15, 2026 |
| Ice Storm Warning | 2 | 0 | December 14, 2024 |
Tornado history in Jasper County
47 tornadoes have been recorded in Jasper County since 1950, killing 12 people and injuring 60. That ranks 18 of 99 counties in Iowa. The most recent was on June 25, 2024 (rated unknown).
Strongest tornadoes in Jasper County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 5, 2022 | EF4 | Madison County | 70.6 mi | 900 yd | 6 | 5 |
| September 28, 1986 | F4 | Polk County | 20 mi | 250 yd | 0 | 0 |
| September 16, 1978 | F3 | Marshall County | 31.8 mi | 200 yd | 6 | 45 |
| April 8, 1999 | F3 | Lucas County | 39 mi | 0 yd | 0 | 5 |
| October 14, 1966 | F3 | Jasper County | 29.5 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 25, 2024 | ? | Jasper County | 0.6 mi | 50 yd | 0 | 0 |
| June 25, 2024 | ? | Jasper County | 0.3 mi | 30 yd | 0 | 0 |
| May 7, 2024 | EF0 | Jasper County | 0.1 mi | 30 yd | 0 | 0 |
| April 26, 2024 | ? | Jasper County | 1.7 mi | 50 yd | 0 | 0 |
| April 26, 2024 | EF1 | Jasper County | 4.1 mi | 80 yd | 0 | 1 |
About Jasper County
- Population: 38,107 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019099 (how to use it)