Lewis County weather alerts
There are no active weather alerts for Lewis County, MO right now.
Since 2016 the National Weather Service has issued about 793 alerts that included Lewis County, roughly 79 a year. The most common is the flood warning (123 from 2016 to 2025). The last tornado warning was issued on April 17, 2026. 13 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 Lewis County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Shelby County, Marion County, Clark County, Adams County.
Lewis County alert history
Alert events that included Lewis County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 123 | 11 | October 2, 2026 |
| Severe Thunderstorm Warning | 121 | 13 | August 8, 2026 |
| Dense Fog Advisory | 78 | 2 | September 11, 2026 |
| Winter Weather Advisory | 66 | 3 | March 16, 2026 |
| Severe Thunderstorm Watch | 59 | 2 | July 10, 2026 |
| Wind Advisory | 54 | 4 | June 17, 2026 |
| Flood Watch | 35 | 8 | August 15, 2026 |
| Cold Weather Advisory | 29 | 3 | January 26, 2026 |
| Freeze Warning | 27 | 2 | November 7, 2026 |
| Heat Advisory | 27 | 7 | August 31, 2026 |
| Tornado Watch | 25 | 9 | June 17, 2026 |
| Flood Advisory | 24 | 4 | September 16, 2026 |
| Flash Flood Warning | 16 | 3 | June 11, 2026 |
| Frost Advisory | 15 | 1 | October 17, 2026 |
| Red Flag Warning | 15 | 1 | February 27, 2026 |
| Winter Storm Watch | 15 | 0 | November 29, 2025 |
| Winter Storm Warning | 14 | 0 | November 29, 2025 |
| Freeze Watch | 11 | 0 | November 2, 2025 |
| Tornado Warning | 11 | 3 | April 17, 2026 |
| Extreme Cold Warning | 7 | 0 | January 21, 2025 |
| Extreme Heat Warning | 6 | 3 | September 3, 2026 |
| Extreme Heat Watch | 4 | 1 | July 26, 2026 |
| Fire Weather Watch | 3 | 1 | February 27, 2026 |
| High Wind Warning | 3 | 0 | March 5, 2025 |
| Extreme Cold Watch | 2 | 0 | December 22, 2022 |
| Ice Storm Warning | 1 | 0 | January 13, 2017 |
| Blizzard Warning | 1 | 0 | November 25, 2018 |
| High Wind Watch | 1 | 0 | March 14, 2019 |
Tornado history in Lewis County
13 tornadoes have been recorded in Lewis County since 1950, injuring 11 people. That ranks 97 of 115 counties in Missouri. The most recent was on April 27, 2016 (rated EF1).
Strongest tornadoes in Lewis County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 10, 2003 | F2 | Lewis County | 20 mi | 200 yd | 0 | 6 |
| April 8, 1999 | F2 | Lewis County | 16 mi | 150 yd | 0 | 2 |
| May 21, 1957 | F2 | Lewis County | 7.4 mi | 400 yd | 0 | 2 |
| June 12, 1970 | F2 | Lewis County | 6.2 mi | 100 yd | 0 | 0 |
| April 30, 1997 | F1 | Lewis County | 15 mi | 100 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 27, 2016 | EF1 | Lewis County | 2 mi | 150 yd | 0 | 0 |
| May 30, 2008 | EF1 | Lewis County | 3.4 mi | 70 yd | 0 | 0 |
| August 8, 2007 | EF0 | Lewis County | 0.1 mi | 10 yd | 0 | 0 |
| May 10, 2003 | F0 | Lewis County | 4 mi | 50 yd | 0 | 0 |
| May 10, 2003 | F2 | Lewis County | 20 mi | 200 yd | 0 | 6 |
About Lewis County
- Population: 9,852 (2024 estimate)
- State: Missouri
- NOAA Weather Radio SAME code: 029111 (how to use it)