South Dakota · September 4, 2023

South Dakota hail map — September 4, 2023

NOAA radar detected hail of an inch or more over 1 South Dakota city on September 4, 2023. The largest stones — 1.50″, half dollar size — fell over Rapid City.

Hail swath map for Rapid City, SD on September 4, 2023 showing 1.50 inch hail.
Swath over Rapid City on September 4, 2023 — 1.50″ hail. Each city below has its own map for this storm.
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 September 4, 2023

Rapid City, SD1.50″ · half dollar

What people on the ground measured in South Dakota on September 4, 2023

8 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.

  • 1.75″ golf ball size Public
    Belle Fourche, SD3:52 PM CDTButte County

    Time estimated from radar

  • 1.25″ half dollar size Public
    Belle Fourche, SD3:52 PM CDTButte County
  • 1.25″ half dollar size Public
    1 E Ellsworth AFB, SD4:15 PM CDTMeade County

    Photo shows several stones of quarter to half dollar size

  • 1.00″ quarter size Public
    1 ESE Dwtn Rapid City, SD3:54 PM CDTPennington County

    mPING report

  • 1.00″ quarter size Public
    1 NE Dwtn Rapid City, SD3:59 PM CDTPennington County

    mPING report

  • 1.00″ quarter size Public
    2 E Ellsworth AFB, SD4:12 PM CDTMeade County

    mPING report

  • 1.00″ quarter size Trained Spotter
    1 NNE Box Elder, SD4:15 PM CDTPennington County

    Winds estimated 60 or higher

  • 0.75″ penny size Public
    1 ESE Dwtn Rapid City, SD3:53 PM CDTPennington 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 states hit on September 4, 2023

Virginia1 city · 1.00″
The full US hail map for September 4, 2023 →

Other South Dakota hail days

August 18, 20261 city · 1.50″August 16, 20261 city · 1.00″August 11, 20261 city · 1.00″August 7, 20261 city · 1.00″July 24, 20261 city · 1.00″July 6, 20261 city · 1.00″July 4, 20261 city · 1.00″July 1, 20261 city · 1.00″June 22, 20261 city · 1.50″May 24, 20261 city · 1.00″May 17, 20261 city · 1.50″February 28, 20261 city · 1.00″
Every hail day across South Dakota →
FAQ

South Dakota hail on September 4, 2023

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 Rapid City. Every city hit is listed above with its own stone size.

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