Johnson County weather alerts
There are no active weather alerts for Johnson County, KS right now.
Since 2016 the National Weather Service has issued about 1,179 alerts that included Johnson County, roughly 118 a year. The most common is the severe thunderstorm warning (272 from 2016 to 2025). The last tornado warning was issued on April 27, 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 Johnson County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Miami County, Jackson County, Douglas County, Cass 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 |
|---|---|---|---|
| Severe Thunderstorm Warning | 272 | 64 | October 14, 2026 |
| Severe Thunderstorm Watch | 98 | 14 | October 13, 2026 |
| Flood Warning | 96 | 10 | July 31, 2026 |
| Dense Fog Advisory | 85 | 5 | September 11, 2026 |
| Flood Advisory | 75 | 16 | October 2, 2026 |
| Winter Weather Advisory | 74 | 1 | March 15, 2026 |
| Wind Advisory | 72 | 3 | June 17, 2026 |
| Heat Advisory | 65 | 6 | August 31, 2026 |
| Flash Flood Warning | 46 | 10 | September 16, 2026 |
| Red Flag Warning | 45 | 3 | March 28, 2026 |
| Flood Watch | 41 | 12 | October 14, 2026 |
| Freeze Warning | 34 | 1 | March 28, 2026 |
| Tornado Watch | 26 | 8 | June 13, 2026 |
| Frost Advisory | 20 | 3 | November 7, 2026 |
| Fire Weather Watch | 18 | 1 | March 28, 2026 |
| Extreme Heat Warning | 17 | 6 | September 7, 2026 |
| Cold Weather Advisory | 16 | 2 | January 26, 2026 |
| Winter Storm Watch | 14 | 1 | January 24, 2026 |
| Winter Storm Warning | 12 | 1 | January 24, 2026 |
| Tornado Warning | 11 | 6 | April 27, 2026 |
| High Wind Warning | 11 | 0 | March 19, 2025 |
| Freeze Watch | 9 | 0 | November 2, 2025 |
| Extreme Heat Watch | 6 | 2 | July 25, 2026 |
| Extreme Cold Warning | 4 | 0 | January 13, 2024 |
| Ice Storm Warning | 3 | 0 | February 6, 2019 |
| Blizzard Warning | 3 | 0 | March 5, 2025 |
| Extreme Cold Watch | 3 | 0 | February 20, 2025 |
| High Wind Watch | 3 | 0 | March 14, 2025 |
| Snow Squall Warning | 0 | 1 | January 16, 2026 |
Tornado history in Johnson County
47 tornadoes have been recorded in Johnson County since 1950, injuring 17 people. That ranks 48 of 105 counties in Kansas. The most recent was on May 19, 2024 (rated EF1).
Strongest tornadoes in Johnson County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 22, 1952 | F4 | Douglas County | 26.9 mi | 440 yd | 0 | 3 |
| May 4, 1977 | F3 | Douglas County | 31.6 mi | 300 yd | 0 | 1 |
| April 19, 1966 | F3 | Johnson County | 7.7 mi | 150 yd | 0 | 4 |
| May 27, 1955 | F2 | Anderson County | 27 mi | 10 yd | 0 | 0 |
| May 4, 1977 | F2 | Johnson County | 7.8 mi | 70 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 19, 2024 | EF1 | Johnson County | 2.6 mi | 150 yd | 0 | 0 |
| May 19, 2024 | EF1 | Johnson County | 1.6 mi | 105 yd | 0 | 0 |
| May 19, 2024 | EF1 | Johnson County | 0.9 mi | 75 yd | 0 | 0 |
| March 15, 2021 | EF0 | Johnson County | 1.4 mi | 50 yd | 0 | 0 |
| May 2, 2018 | EF1 | Johnson County | 4.7 mi | 25 yd | 0 | 0 |
About Johnson County
- Population: 632,276 (2024 estimate)
- State: Kansas
- NOAA Weather Radio SAME code: 020091 (how to use it)
- Cities: Overland Park, Olathe