South Dakota storm reports for August 20, 2026
NOAA recorded 9 hail reports and 4 wind reports in South Dakota on August 20, 2026.
- in South Dakota
- 13
- Storm reports
- Humboldt, Minnehaha County, SD
- 1.75 in
- Largest hail
- 7 WSW Wall Lake, Turner County, SD
- 76 mph
- Highest gust
- 0
- Tornado reports
Hail, inches
- 0.75
- 1
- 1.5
- 2
- 2.5
- 3+
Dots: reports. Shading: radar estimate.
- Wind report
- Estimated gusts, 50 to 90 mph
- Surveyed tornado path
Hail, inches
- 0.75
- 1
- 1.5
- 2
- 2.5
- 3+
Dots: reports. Shading: radar estimate.
- Wind report
- Estimated gusts, 50 to 90 mph
- Surveyed tornado path
Source: NOAA/NWS Storm Prediction Center, preliminary storm reports. NOAA revises recent reports for several weeks. Report day: 12:00 UTC on August 20, 2026 to 12:00 UTC the next day. Times are Central.
Select a dot or a path for the report. NWS survey teams walked the shaded paths after the storm; each is drawn at the widest width they found, so it can look wider than the damage at any one spot. Gust lines are estimates: the highest gust of the day in NOAA's hourly 2.5 km wind analysis (URMA), which fills in between weather stations. They aren't measurements at any building.
Reports by hour
Hail9, most at 7 PM
Wind4, most at 7 PM
Every report
Source: NOAA/NWS Storm Prediction Center.
| Time | Size | Where |
|---|---|---|
| 6:48 PM | 1.75 in | Humboldt, Minnehaha County, SD |
| 7:00 PM | 1.25 in | 2 W Hartford, Minnehaha County, SD |
| 7:02 PM | 1.5 in | 5 NW Crooks, Minnehaha County, SD |
| 7:10 PM | 1.25 in | 3 NE Crooks, Minnehaha County, SD |
| 7:10 PM | 1.25 in | 4 NE Crooks, Minnehaha County, SD |
| 7:14 PM | 1.0 in | 2 W Baltic, Minnehaha County, SD |
| 7:15 PM | 1.0 in | 5 ENE Crooks, Minnehaha County, SD |
| 7:28 PM | 1.0 in | 4 S Sioux Falls, Lincoln County, SD |
| 7:49 PM | 1.0 in | 5 NE Lesterville, Yankton County, SD |
| Time | Gust | Where |
|---|---|---|
| 7:25 PM | Not measured | 3 SSW Olivet, Hutchinson County, SD |
| 7:25 PM | 76 mph | 7 WSW Wall Lake, Turner County, SD |
| 8:02 PM | Not measured | 1 N Chancellor, Turner County, SD |
| 8:19 PM | 58 mph | 1 SSW Chancellor, Turner County, SD |
Cities with reports nearby
Reports within 15 miles of the center of each city we track.
| City | Largest hail | Highest gust | Tornado reports |
|---|---|---|---|
| Sioux Falls, SD | 1.5 in | None | 0 |
Reports are what observers recorded near a location, not a complete record of every storm. They don’t describe conditions at any building.