Jefferson County weather alerts
There are no active weather alerts for Jefferson County, KY right now.
Since 2016 the National Weather Service has issued about 993 alerts that included Jefferson County, roughly 99 a year. The most common is the severe thunderstorm warning (194 from 2016 to 2025). The last tornado warning was issued on June 18, 2026. 29 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 Jefferson County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Hardin County, Shelby County, Floyd County, Clark County.
Jefferson County alert history
Alert events that included Jefferson County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 194 | 26 | August 16, 2026 |
| Flood Advisory | 150 | 22 | September 18, 2026 |
| Wind Advisory | 84 | 3 | March 15, 2026 |
| Winter Weather Advisory | 73 | 4 | March 17, 2026 |
| Flood Watch | 63 | 9 | August 11, 2026 |
| Severe Thunderstorm Watch | 60 | 6 | August 12, 2026 |
| Dense Fog Advisory | 49 | 5 | October 15, 2026 |
| Flash Flood Warning | 47 | 16 | July 21, 2026 |
| Flood Warning | 42 | 3 | July 21, 2026 |
| Tornado Watch | 39 | 7 | June 22, 2026 |
| Freeze Warning | 35 | 2 | November 8, 2026 |
| Frost Advisory | 31 | 7 | November 9, 2026 |
| Heat Advisory | 26 | 7 | September 15, 2026 |
| Freeze Watch | 19 | 1 | March 28, 2026 |
| Tornado Warning | 17 | 2 | June 18, 2026 |
| Winter Storm Warning | 13 | 1 | January 24, 2026 |
| Cold Weather Advisory | 10 | 4 | January 31, 2026 |
| High Wind Warning | 9 | 0 | September 27, 2024 |
| Winter Storm Watch | 9 | 1 | January 24, 2026 |
| Red Flag Warning | 8 | 0 | April 20, 2023 |
| Extreme Heat Warning | 6 | 1 | June 29, 2026 |
| Fire Weather Watch | 3 | 0 | April 20, 2023 |
| Extreme Heat Watch | 2 | 0 | August 21, 2023 |
| Ice Storm Warning | 1 | 0 | February 3, 2022 |
| Snow Squall Warning | 1 | 0 | January 28, 2022 |
| Extreme Cold Watch | 1 | 0 | December 23, 2022 |
| Extreme Cold Warning | 1 | 1 | January 27, 2026 |
Tornado history in Jefferson County
29 tornadoes have been recorded in Jefferson County since 1950, killing 3 people and injuring 238. That ranks 7 of 120 counties in Kentucky. The most recent was on April 2, 2025 (rated EF3).
Strongest tornadoes in Jefferson County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 3, 1974 | F4 | Jefferson County | 18.5 mi | 10 yd | 3 | 225 |
| May 28, 1996 | F4 | Jefferson County | 30 mi | 850 yd | 0 | 10 |
| April 2, 2025 | EF3 | Jefferson County | 9.7 mi | 350 yd | 0 | 0 |
| March 25, 1964 | F2 | Jefferson County | 38.4 mi | 10 yd | 0 | 1 |
| June 22, 2011 | EF2 | Jefferson County | 1.6 mi | 100 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 2, 2025 | EF3 | Jefferson County | 9.7 mi | 350 yd | 0 | 0 |
| March 30, 2025 | EF1 | Jefferson County | 5.4 mi | 30 yd | 0 | 1 |
| July 4, 2024 | EF1 | Jefferson County | 0.5 mi | 170 yd | 0 | 0 |
| April 5, 2023 | EF1 | Jefferson County | 0.9 mi | 100 yd | 0 | 0 |
| April 5, 2023 | EF1 | Jefferson County | 0.4 mi | 75 yd | 0 | 0 |
About Jefferson County
- Population: 793,881 (2024 estimate)
- State: Kentucky
- NOAA Weather Radio SAME code: 021111 (how to use it)
- Cities: Louisville