DeKalb County weather alerts
There are no active weather alerts for DeKalb County, MO right now.
Since 2016 the National Weather Service has issued about 884 alerts that included DeKalb County, roughly 88 a year. The most common is the severe thunderstorm warning (189 from 2016 to 2025). The last tornado warning was issued on June 10, 2026. 20 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 DeKalb County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Daviess County, Clinton County, Caldwell County, Gentry County.
DeKalb County alert history
Alert events that included DeKalb County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 189 | 41 | September 16, 2026 |
| Severe Thunderstorm Watch | 90 | 8 | October 13, 2026 |
| Dense Fog Advisory | 79 | 8 | September 11, 2026 |
| Winter Weather Advisory | 70 | 3 | March 15, 2026 |
| Wind Advisory | 64 | 4 | June 17, 2026 |
| Heat Advisory | 42 | 8 | September 8, 2026 |
| Flood Warning | 40 | 4 | June 11, 2026 |
| Tornado Watch | 36 | 7 | June 10, 2026 |
| Flood Watch | 35 | 10 | September 30, 2026 |
| Freeze Warning | 34 | 2 | October 17, 2026 |
| Red Flag Warning | 25 | 5 | March 28, 2026 |
| Flood Advisory | 24 | 3 | June 21, 2026 |
| Flash Flood Warning | 23 | 7 | September 14, 2026 |
| Cold Weather Advisory | 23 | 2 | January 26, 2026 |
| Frost Advisory | 19 | 3 | November 7, 2026 |
| Winter Storm Watch | 15 | 0 | February 12, 2025 |
| Winter Storm Warning | 11 | 0 | February 11, 2025 |
| Fire Weather Watch | 9 | 2 | March 28, 2026 |
| Tornado Warning | 9 | 6 | June 10, 2026 |
| Freeze Watch | 8 | 1 | October 17, 2026 |
| Extreme Heat Warning | 7 | 3 | September 3, 2026 |
| Extreme Cold Warning | 7 | 0 | February 20, 2025 |
| High Wind Warning | 7 | 1 | March 15, 2026 |
| Extreme Heat Watch | 5 | 2 | July 25, 2026 |
| Extreme Cold Watch | 4 | 0 | February 20, 2025 |
| Ice Storm Warning | 3 | 0 | February 6, 2019 |
| Blizzard Warning | 3 | 0 | March 5, 2025 |
| High Wind Watch | 3 | 1 | March 15, 2026 |
| Snow Squall Warning | 0 | 1 | January 16, 2026 |
Tornado history in DeKalb County
20 tornadoes have been recorded in DeKalb County since 1950, killing 3 people and injuring 13. That ranks 73 of 115 counties in Missouri. The most recent was on May 20, 2021 (rated EF0).
Strongest tornadoes in DeKalb County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 29, 2004 | F4 | DeKalb County | 22 mi | 800 yd | 3 | 6 |
| June 29, 1960 | F2 | Buchanan County | 25.1 mi | 100 yd | 0 | 0 |
| April 15, 2006 | F2 | DeKalb County | 13 mi | 100 yd | 0 | 0 |
| May 20, 1957 | F2 | DeKalb County | 9.8 mi | 200 yd | 0 | 0 |
| April 10, 1965 | F2 | DeKalb County | 9.6 mi | 50 yd | 0 | 7 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 20, 2021 | EF0 | DeKalb County | 0.9 mi | 50 yd | 0 | 0 |
| September 9, 2014 | EF0 | DeKalb County | 0.8 mi | 25 yd | 0 | 0 |
| June 7, 2009 | EF0 | DeKalb County | 0.1 mi | 25 yd | 0 | 0 |
| June 7, 2009 | EF0 | DeKalb County | 0.1 mi | 25 yd | 0 | 0 |
| April 15, 2006 | F2 | DeKalb County | 13 mi | 100 yd | 0 | 0 |
About DeKalb County
- Population: 9,884 (2024 estimate)
- State: Missouri
- NOAA Weather Radio SAME code: 029063 (how to use it)