Johnson County weather alerts
There are no active weather alerts for Johnson County, IN right now.
Since 2016 the National Weather Service has issued about 865 alerts that included Johnson County, roughly 87 a year. The most common is the flood warning (182 from 2016 to 2025). The last tornado warning was issued on June 18, 2026. 24 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 Johnson County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Shelby County, Brown County, Marion County, Morgan County.
Johnson County alert history
Alert events that included Johnson County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 182 | 25 | August 21, 2026 |
| Severe Thunderstorm Warning | 152 | 36 | September 16, 2026 |
| Wind Advisory | 61 | 6 | April 2, 2026 |
| Flood Advisory | 55 | 18 | August 20, 2026 |
| Severe Thunderstorm Watch | 53 | 17 | November 11, 2026 |
| Dense Fog Advisory | 48 | 7 | October 12, 2026 |
| Winter Weather Advisory | 48 | 1 | March 2, 2026 |
| Flood Watch | 36 | 11 | September 18, 2026 |
| Freeze Warning | 36 | 2 | April 20, 2026 |
| Tornado Watch | 29 | 5 | June 21, 2026 |
| Frost Advisory | 27 | 5 | October 19, 2026 |
| Heat Advisory | 27 | 4 | September 1, 2026 |
| Flash Flood Warning | 26 | 1 | August 12, 2026 |
| Freeze Watch | 15 | 2 | April 20, 2026 |
| Cold Weather Advisory | 15 | 7 | February 1, 2026 |
| Winter Storm Watch | 10 | 1 | January 24, 2026 |
| Winter Storm Warning | 10 | 1 | January 24, 2026 |
| Red Flag Warning | 7 | 0 | April 20, 2023 |
| High Wind Watch | 6 | 0 | January 12, 2024 |
| Tornado Warning | 6 | 8 | June 18, 2026 |
| High Wind Warning | 5 | 1 | March 15, 2026 |
| Extreme Heat Watch | 3 | 0 | August 27, 2024 |
| Extreme Heat Warning | 3 | 1 | June 30, 2026 |
| Extreme Cold Watch | 2 | 0 | January 20, 2025 |
| Ice Storm Warning | 1 | 0 | November 15, 2018 |
| Extreme Cold Warning | 1 | 2 | January 28, 2026 |
| Fire Weather Watch | 1 | 0 | October 14, 2022 |
Tornado history in Johnson County
24 tornadoes have been recorded in Johnson County since 1950, killing 2 people and injuring 185. That ranks 31 of 92 counties in Indiana. The most recent was on June 25, 2023 (rated EF2).
Strongest tornadoes in Johnson County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| October 11, 1954 | F3 | Johnson County | 4.7 mi | 100 yd | 2 | 0 |
| September 20, 2002 | F3 | Monroe County | 112 mi | 150 yd | 0 | 127 |
| March 10, 1986 | F3 | Morgan County | 35 mi | 440 yd | 0 | 22 |
| July 30, 1992 | F3 | Johnson County | 7 mi | 200 yd | 0 | 25 |
| March 31, 2023 | EF3 | Johnson County | 5.5 mi | 316 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 25, 2023 | EF2 | Johnson County | 5.4 mi | 400 yd | 0 | 0 |
| March 31, 2023 | EF3 | Johnson County | 5.5 mi | 316 yd | 0 | 0 |
| March 31, 2023 | EF0 | Johnson County | 1.9 mi | 25 yd | 0 | 0 |
| May 21, 2022 | EF0 | Johnson County | 0.1 mi | 25 yd | 0 | 0 |
| December 23, 2015 | EF1 | Johnson County | 0.3 mi | 40 yd | 0 | 0 |
About Johnson County
- Population: 170,614 (2024 estimate)
- State: Indiana
- NOAA Weather Radio SAME code: 018081 (how to use it)