South Dakota · July 4, 2026

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.

Hail swath map for Sioux Falls, SD on July 4, 2026 showing 1.00 inch hail.
Swath over Sioux Falls on July 4, 2026 — 1.00″ hail. Each city below has its own map for this storm.
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Cities hit
1
in South Dakota
Largest stone
1.00″
quarter size
Impact rating
3/10
from stone size

Sizes come from NOAA radar, 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

Sioux Falls, SD1.00″ · quarter

What people on the ground measured in South Dakota on July 4, 2026

12 reports filed with the National Weather Service — 1 from trained observers 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 Public
    5 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 Public
    5 SSW Custer, SD2:44 PM CDTCuster County

    mPING report

  • 1.75″ golf ball size Public
    5 SSW Custer, SD2:32 PM CDTCuster County

    mPING report

  • 1.75″ golf ball size Public
    15 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 Mngr
    3 NE Oacoma, SD6:37 PM CDTLyman County

    mainly dime and nickel size hail with some larger hailstones thrown in.

  • 1.00″ quarter size Public
    7 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 Public
    9 NE Hosmer, SD4:18 PM CDTMcPherson County
  • 1.00″ quarter size Public
    9 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 Public
    14 SSE Seneca, SD6:32 PM CDTHyde County

    still hailing at the time of report.

  • 1.00″ quarter size Public
    Oacoma, SD6:55 PM CDTLyman County

    Hail up to the size of quarters via Facebook report.

  • 1.00″ quarter size Public
    18 N Holabird, SD7:52 PM CDTHyde County

    Photo of quarter sized hail relayed by the Hyde County Emergency Manager.

  • 0.88″ penny size Public
    1 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

Oklahoma18 cities · 2.00″Maryland38 cities · 2.00″Connecticut16 cities · 2.00″Texas2 cities · 2.00″Virginia14 cities · 1.50″Illinois7 cities · 1.50″New York2 cities · 1.50″Nebraska2 cities · 1.00″Iowa9 cities · 1.00″Tennessee8 cities · 1.00″Minnesota3 cities · 1.00″Pennsylvania1 city · 1.00″
The full US hail map for July 4, 2026 →

Other South Dakota hail days

September 11, 20262 cities · 1.50″September 5, 20261 city · 1.00″September 1, 20262 cities · 2.00″August 29, 20261 city · 1.00″August 24, 20261 city · 1.00″August 23, 20261 city · 1.50″August 18, 20261 city · 2.00″August 16, 20261 city · 1.00″August 11, 20261 city · 2.00″August 7, 20262 cities · 1.00″July 25, 20262 cities · 2.00″July 24, 20261 city · 1.50″
Every hail day across South Dakota →
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FAQ

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.

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