South Dakota hail map — July 9, 2025
NOAA radar detected hail of an inch or more over 1 South Dakota city on July 9, 2025. 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 9, 2025
What people on the ground measured in South Dakota on July 9, 2025
12 reports filed with the National Weather Service — 4 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.
- 2.50″ hen egg size Trained SpotterLyman, SD7:59 PM CDTLyman County
Spotter reports Hen Egg to Tennis Ball size hail near Lyman. Time estimated based on radar.
- 1.75″ golf ball size Emergency Mngr2 NW Joe Creek Rec Area, SD8:55 PM CDTHughes County
Emergency manager reports golf ball size hail in the area of West Bed Rec Area. No damage at West Bend. Radar estimated time.
- 1.50″ half dollar size Public19 E Redig, SD4:00 PM CDTHarding County
- 1.00″ quarter size Trained Spotter8 N Kadoka, SD7:50 PM CDTJackson County
- 1.00″ quarter size Trained Spotter2 ENE Overlook Rec Area, SD8:04 PM CDTHughes County
- 1.00″ quarter size CO-OP ObserverTyndall, SD10:42 PM CDTBon Homme County
- 1.00″ quarter size Public6 SW Humboldt, SD12:25 AM CDTMcCook County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public5 W Sioux Falls, SD12:42 AM CDTMinnehaha County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public1 E Hartford, SD12:46 AM CDTMinnehaha County
Mostly pea to dime sized hail, but some as big as quarters.
- 1.00″ quarter size Public5 N Tea, SD12:49 AM CDTMinnehaha County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public3 W Sioux Falls, SD12:55 AM CDTMinnehaha County
Report from mPING: Quarter (1.00 in.).
- 0.88″ penny size CO-OP ObserverTyndall, SD10:52 PM CDTBon Homme County
Observer reported hail at nickel size, close to quarter sized.
Showing the 12 largest of 19 hail reports filed that day.
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 July 9, 2025
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.