South Dakota hail map — June 18, 2024
NOAA radar detected hail of an inch or more over 1 South Dakota city on June 18, 2024. The largest stones — 1.50″, half dollar size — fell over Watertown.
- Cities hit
- 1
- in South Dakota
- Largest stone
- 1.50″
- half dollar size
- Impact rating
- 5/10
- 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 June 18, 2024
What people on the ground measured in South Dakota on June 18, 2024
6 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.
- 1.75″ golf ball size Public4 SE Rauville, SD4:28 PM CDTCodington County
Report from social media.
- 1.00″ quarter size Public2 ENE Watertown, SD4:30 PM CDTCodington County
Time estimated.
- 1.00″ quarter size Trained Spotter3 SSW Troy, SD4:36 PM CDTGrant County
- 0.88″ penny size PublicHazel, SD4:01 PM CDTHamlin County
Dime to nickel size hail.
- 0.88″ penny size Trained Spotter1 SW Watertown, SD4:17 PM CDTCodington County
- 0.88″ penny size CO-OP Observer1 NW Watertown, SD4:25 PM CDTCodington County
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 June 18, 2024
NOAA radar put hail of an inch or more over 1 South Dakota city that day. The largest stones — 1.50 inches, half dollar size — were over Watertown. Every city hit is listed above with its own stone size.