South Dakota hail map — August 16, 2026
NOAA radar detected hail of an inch or more over 1 South Dakota city on August 16, 2026. The largest stones — 1.00″, quarter size — fell over Rapid City.
- Cities hit
- 1
- in South Dakota
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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South Dakota cities hit on August 16, 2026
What people on the ground measured in South Dakota on August 16, 2026
4 reports filed with the National Weather Service — 2 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 1.00″ quarter size Trained Spotter2 ENE Kyle, SD8:06 PM CDTOglala Lakota County
Hail estimated at quarter size but no hail damage observed. Also winds estimated at 60 MPH with tree limbs down and outdoor objects blown around. Time estimated based on radar.
- 0.88″ penny size Storm Chaser2 NW Dwtn Rapid City, SD6:27 PM CDTPennington County
Via Spotter Network.
- 0.88″ penny size Trained Spotter1 S Oglala, SD9:26 PM CDTOglala Lakota County
Nickel and dime size hail along with very heavy rain reported. Time hail began adjusted based on radar.
- 0.75″ penny size Public2 W Black Hawk, SD6:04 PM CDTMeade County
mPING report
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Other South Dakota hail days
South Dakota hail on August 16, 2026
NOAA radar put hail of an inch or more over 1 South Dakota city that day. The largest stones — 1.00 inches, quarter size — were over Rapid City. Every city hit is listed above with its own stone size.