South Dakota hail map — July 4, 2026
NOAA radar detected hail of an inch or more over 1 South Dakota city on July 4, 2026. The largest stones — 1.00″, quarter size — fell over Sioux Falls.
- 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 July 4, 2026
What people on the ground measured in South Dakota on July 4, 2026
12 reports filed with the National Weather Service — 1 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.
- 2.25″ hen egg size Public5 NNW Pringle, SD2:37 PM CDTCuster County
*** 1 Inj *** Hail lasted 30 minutes. Ground covered. Numerous stones larger than golf ball size. Largest stones estimated at over 2 inches in diameter per photos. 1 person injured with cuts to her head. Numerous vehicles damaged with dents. Holes punched through 11 plastic picnic tables. Roof damage reported. Time estimated based on radar.
- 2.00″ hen egg size Public5 SSW Custer, SD2:44 PM CDTCuster County
mPING report
- 1.75″ golf ball size Public5 SSW Custer, SD2:32 PM CDTCuster County
mPING report
- 1.75″ golf ball size Public15 WNW Polo, SD6:27 PM CDTHyde County
Facebook picture of several hail stones the size of a golfball. Time estimated based on radar.
- 1.25″ half dollar size Emergency Mngr3 NE Oacoma, SD6:37 PM CDTLyman County
mainly dime and nickel size hail with some larger hailstones thrown in.
- 1.00″ quarter size Public7 NNE Eureka, SD3:22 PM CDTMcPherson County
observed pea to estimated quarter size hail and up to an inch of rain.
- 1.00″ quarter size Public9 NE Hosmer, SD4:18 PM CDTMcPherson County
- 1.00″ quarter size Public9 ENE Corona, SD5:54 PM CDTRoberts County
Photo of 1 hailstone from Fish Haven Road in Roberts County. Time estimated by radar and time that the photo was sent.
- 1.00″ quarter size Public14 SSE Seneca, SD6:32 PM CDTHyde County
still hailing at the time of report.
- 1.00″ quarter size PublicOacoma, SD6:55 PM CDTLyman County
Hail up to the size of quarters via Facebook report.
- 1.00″ quarter size Public18 N Holabird, SD7:52 PM CDTHyde County
Photo of quarter sized hail relayed by the Hyde County Emergency Manager.
- 0.88″ penny size Public1 W Oacoma, SD6:58 PM CDTLyman County
Dime to nickel sized hail. Report via Facebook.
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 states hit on July 4, 2026
Other South Dakota hail days
South Dakota hail on July 4, 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 Sioux Falls. Every city hit is listed above with its own stone size.