National Weather ServiceSouth DakotaFlood WarningArchive to October 1, 2026
Flood Warnings in South Dakota
The National Weather Service issued 95 flood warnings for South Dakota in 2025 and 101 a year on average in 2008-2025; in 2021-2025 it had the 29th most of any state. 2026 through September: 37, 62% below the average of 97 for those months in 2008-2025. Minnehaha was covered most often (266 times since 2008).
How many flood warnings does South Dakota get?
Every flood warning that covered part of South Dakota. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 37 |
| 2025 | 95 |
| 2024 | 87 |
| 2023 | 91 |
| 2022 | 46 |
| 2021 | 13 |
| 2020 | 81 |
| 2019 | 431 |
| 2018 | 220 |
| 2017 | 18 |
| 2016 | 18 |
| 2015 | 74 |
| 2014 | 63 |
| 2013 | 43 |
| 2012 | 24 |
| 2011 | 215 |
| 2010 | 175 |
| 2009 | 65 |
| 2008 | 54 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does South Dakota get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in South Dakota?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Minnehaha | 266 | 25 | June 28, 2024 |
| Union | 175 | 16 | June 24, 2024 |
| Moody | 152 | 18 | June 30, 2025 |
| Codington | 131 | 44 | July 9, 2026 |
| Brookings | 129 | 25 | July 10, 2026 |
| Lincoln | 124 | 12 | June 24, 2024 |
| Turner | 89 | 9 | June 24, 2024 |
| Brown | 85 | 20 | July 8, 2026 |
| Spink | 84 | 16 | October 20, 2025 |
| Hamlin | 74 | 26 | July 9, 2026 |
| Pennington | 71 | 4 | October 13, 2023 |
| Davison | 71 | 6 | June 24, 2024 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest flood warnings for South Dakota in AreaZine's record
NWS AberdeenWarningSeptember 28, 2026
Flood Warning: Campbell and Corson, SD
Expired 3:30 p.m. CDT, September 28, 2026
NWS AberdeenWarningSeptember 28, 2026
Flood Warning: Dewey, SD
Expired 12:30 p.m. CDT, September 28, 2026
NWS AberdeenWarningAugust 29, 2026
Flood Warning: Edmunds and Walworth, SD
Expired 9:30 p.m. CDT, August 29, 2026
NWS AberdeenWarningAugust 24, 2026
Flood Warning: Jones, SD
Expired 1:45 a.m. CDT, August 25, 2026
NWS AberdeenWarningAugust 13, 2026
Flood Warning: Hyde, SD
Expired 7:00 a.m. CDT, August 13, 2026
NWS AberdeenWarningJuly 31, 2026
Flood Warning: Roberts, SD
Expired 2:00 p.m. CDT, August 1, 2026
NWS AberdeenWarningJuly 31, 2026
Flood Warning: Big Stone, Traverse, Day and 2 more, MN and SD
Expired 9:15 a.m. CDT, July 31, 2026
NWS AberdeenWarningJuly 30, 2026
Flood Warning: Lyman, SD
Expired 10:00 a.m. CDT, July 31, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a flood warning?
A flood warning means flooding is happening or about to happen. The NWS issues it both for rivers at forecast points (river flood warnings) and for areas where water ponds or runs off (areal flood warnings); AreaZine counts both. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in South Dakota.