Lyon County weather alerts
There are no active weather alerts for Lyon County, KS right now.
Since 2016 the National Weather Service has issued about 1,329 alerts that included Lyon County, roughly 133 a year. The most common is the severe thunderstorm warning (285 from 2016 to 2025). The last tornado warning was issued on June 11, 2026. 50 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 Lyon County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Greenwood County, Chase County, Osage County, Morris County.
Lyon County alert history
Alert events that included Lyon County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 285 | 56 | September 15, 2026 |
| Flood Warning | 156 | 9 | October 2, 2026 |
| Severe Thunderstorm Watch | 106 | 10 | October 13, 2026 |
| Wind Advisory | 100 | 6 | June 17, 2026 |
| Dense Fog Advisory | 78 | 3 | August 26, 2026 |
| Winter Weather Advisory | 77 | 0 | December 1, 2025 |
| Heat Advisory | 71 | 10 | September 2, 2026 |
| Red Flag Warning | 69 | 5 | March 28, 2026 |
| Flood Advisory | 64 | 10 | September 16, 2026 |
| Flash Flood Warning | 44 | 4 | October 1, 2026 |
| Flood Watch | 43 | 8 | October 13, 2026 |
| Fire Weather Watch | 37 | 4 | March 28, 2026 |
| Tornado Watch | 32 | 9 | September 30, 2026 |
| Freeze Warning | 25 | 0 | April 8, 2025 |
| Tornado Warning | 23 | 9 | June 11, 2026 |
| Frost Advisory | 19 | 1 | October 17, 2026 |
| Cold Weather Advisory | 17 | 1 | January 23, 2026 |
| Winter Storm Watch | 14 | 1 | January 24, 2026 |
| Winter Storm Warning | 13 | 1 | January 24, 2026 |
| Freeze Watch | 11 | 0 | April 8, 2025 |
| High Wind Warning | 10 | 1 | March 15, 2026 |
| Extreme Heat Warning | 9 | 4 | September 3, 2026 |
| Extreme Heat Watch | 6 | 2 | July 28, 2026 |
| Extreme Cold Watch | 6 | 0 | February 18, 2025 |
| Extreme Cold Warning | 5 | 0 | February 18, 2025 |
| High Wind Watch | 5 | 1 | March 15, 2026 |
| Ice Storm Warning | 2 | 0 | February 20, 2018 |
| Blizzard Warning | 2 | 0 | January 5, 2025 |
Tornado history in Lyon County
50 tornadoes have been recorded in Lyon County since 1950, killing 7 people and injuring 203. That ranks 39 of 105 counties in Kansas. The most recent was on June 28, 2024 (rated unknown).
Strongest tornadoes in Lyon County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 8, 1974 | F4 | Lyon County | 37.5 mi | 1,760 yd | 6 | 177 |
| May 21, 2011 | EF3 | Lyon County | 10.1 mi | 700 yd | 1 | 5 |
| April 2, 1956 | F3 | Marion County | 127 mi | 790 yd | 0 | 4 |
| May 10, 1953 | F3 | Chase County | 52.2 mi | 10 yd | 0 | 0 |
| March 13, 1973 | F2 | Lyon County | 10.2 mi | 220 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 28, 2024 | ? | Lyon County | 2.4 mi | 30 yd | 0 | 0 |
| May 14, 2020 | EF0 | Lyon County | 1.6 mi | 50 yd | 0 | 0 |
| May 14, 2020 | ? | Lyon County | 2.7 mi | 25 yd | 0 | 0 |
| May 2, 2018 | EF0 | Lyon County | 0 mi | 20 yd | 0 | 0 |
| May 19, 2017 | EF0 | Lyon County | 0 mi | 25 yd | 0 | 0 |
About Lyon County
- Population: 32,520 (2024 estimate)
- State: Kansas
- NOAA Weather Radio SAME code: 020111 (how to use it)