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South Dakota storm reports for August 17, 2026

NOAA recorded 2 hail reports and 31 wind reports in South Dakota on August 17, 2026.

in South Dakota
33
Storm reports
Ralph, Harding County, SD
1.25 in
Largest hail
7 W Ardmore, Fall River County, SD
97 mph
Highest gust
0
Tornado reports
Sources: NOAA/NWS Storm Prediction Center reports; radar hail estimates from NOAA MRMS; gust estimates from NOAA URMA

Hail, inches

  • 0.75
  • 1
  • 1.5
  • 2
  • 2.5
  • 3+

Dots: reports. Shading: radar estimate.

  • Wind report
  • Estimated gusts, 50 to 90 mph

Source: NOAA/NWS Storm Prediction Center, preliminary storm reports. NOAA revises recent reports for several weeks. Report day: 12:00 UTC on August 17, 2026 to 12:00 UTC the next day. Times are Central.

Select a dot or a path for the report. 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

Hail2, most at 2 PM

Wind31, most at 5 PM

Reports per hour, Central time. Each row has its own scale.

Every report

Source: NOAA/NWS Storm Prediction Center.

TimeSizeWhere
2:20 PM1.25 inRalph, Harding County, SD
7:56 PM1.0 inMartin, Bennett County, SD

Reports are what observers recorded near a location, not a complete record of every storm. They don’t describe conditions at any building.