Lake County weather alerts
There are no active weather alerts for Lake County, SD right now.
Since 2016 the National Weather Service has issued about 917 alerts that included Lake County, roughly 92 a year. The most common is the severe thunderstorm warning (151 from 2016 to 2025). The last tornado warning was issued on July 2, 2026. 28 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 Lake County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Minnehaha County, Miner County, Kingsbury County, Moody County.
Lake County alert history
Alert events that included Lake County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 151 | 19 | September 11, 2026 |
| Winter Weather Advisory | 118 | 7 | April 3, 2026 |
| Dense Fog Advisory | 117 | 13 | October 12, 2026 |
| Wind Advisory | 97 | 3 | June 17, 2026 |
| Severe Thunderstorm Watch | 75 | 10 | September 11, 2026 |
| Cold Weather Advisory | 61 | 4 | March 16, 2026 |
| Heat Advisory | 38 | 3 | July 25, 2026 |
| Winter Storm Watch | 33 | 1 | March 15, 2026 |
| Red Flag Warning | 33 | 9 | May 14, 2026 |
| Frost Advisory | 22 | 5 | May 20, 2026 |
| Winter Storm Warning | 20 | 0 | November 28, 2025 |
| Fire Weather Watch | 20 | 4 | May 15, 2026 |
| Extreme Cold Warning | 18 | 1 | January 23, 2026 |
| Freeze Warning | 17 | 3 | October 17, 2026 |
| Blizzard Warning | 12 | 2 | March 15, 2026 |
| High Wind Warning | 11 | 2 | March 12, 2026 |
| Flash Flood Warning | 10 | 0 | August 6, 2025 |
| Flood Warning | 10 | 0 | June 21, 2024 |
| Flood Watch | 9 | 0 | June 21, 2024 |
| Tornado Warning | 9 | 1 | July 2, 2026 |
| Tornado Watch | 8 | 3 | June 10, 2026 |
| Extreme Heat Warning | 7 | 1 | July 25, 2026 |
| Extreme Heat Watch | 6 | 0 | July 27, 2025 |
| Extreme Cold Watch | 5 | 1 | January 23, 2026 |
| Freeze Watch | 4 | 1 | October 17, 2026 |
| High Wind Watch | 4 | 1 | March 13, 2026 |
| Snow Squall Warning | 1 | 0 | April 9, 2020 |
| Ice Storm Warning | 1 | 0 | December 13, 2022 |
Tornado history in Lake County
28 tornadoes have been recorded in Lake County since 1950, injuring 6 people. That ranks 33 of 66 counties in South Dakota. The most recent was on May 24, 2021 (rated unknown).
Strongest tornadoes in Lake County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 7, 1993 | F4 | Lake County | 10 mi | 500 yd | 0 | 4 |
| June 7, 1993 | F3 | Lake County | 6 mi | 100 yd | 0 | 0 |
| June 7, 1993 | F3 | Lake County | 6 mi | 100 yd | 0 | 0 |
| June 15, 1970 | F3 | Lake County | 0.1 mi | 200 yd | 0 | 0 |
| June 29, 1956 | F2 | Lake County | 18.6 mi | 10 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 24, 2021 | ? | Lake County | 3.3 mi | 25 yd | 0 | 0 |
| September 15, 2017 | EF0 | Lake County | 0.1 mi | 100 yd | 0 | 0 |
| May 30, 2011 | EF0 | Lake County | 0.5 mi | 50 yd | 0 | 0 |
| May 30, 2011 | EF0 | Lake County | 0.7 mi | 50 yd | 0 | 0 |
| June 18, 2009 | EF0 | Lake County | 0.1 mi | 50 yd | 0 | 0 |
About Lake County
- Population: 11,006 (2024 estimate)
- State: South Dakota
- NOAA Weather Radio SAME code: 046079 (how to use it)