South Dakota · May 17, 2026

South Dakota hail map — May 17, 2026

NOAA radar detected hail of an inch or more over 1 South Dakota city on May 17, 2026. The largest stones — 1.50″, half dollar size — fell over Sioux Falls.

Hail swath map for Sioux Falls, SD on May 17, 2026 showing 1.50 inch hail.
Swath over Sioux Falls on May 17, 2026 — 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 May 17, 2026

Sioux Falls, SD1.50″ · half dollar

What people on the ground measured in South Dakota on May 17, 2026

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.

  • 1.75″ golf ball size Public
    6 ESE Menno, SD3:36 PM CDTHutchinson County

    Photo of roughly golf ball size hail. Time estimated via radar.

  • 1.50″ half dollar size Trained Spotter
    4 SSE Sioux Falls, SD4:47 PM CDTLincoln County
  • 1.25″ half dollar size Trained Spotter
    Burke, SD1:40 PM CDTGregory County

    In addtion to half dollar sized hail, heavy rain is falling.

  • 1.00″ quarter size Trained Spotter
    1 SE Marty, SD2:37 PM CDTCharles Mix County

    Winds estimated 40-50 mph.

  • 1.00″ quarter size Public
    3 E Menno, SD3:36 PM CDTHutchinson County

    Corrects time of previous hail report from 3 E Menno. Via mping. Time estimated via radar.

  • 1.00″ quarter size Public
    7 N Mayfield, SD3:44 PM CDTTurner County

    Via mping. Time estimated via radar.

  • 1.00″ quarter size Public
    3 E Menno, SD3:44 PM CDTHutchinson County

    Via mping. Time estimated via radar.

  • 1.00″ quarter size Public
    2 W Lennox, SD4:17 PM CDTTurner County

    Quarter size hail along with estimated 40-50 mph winds reported.

  • 1.00″ quarter size Public
    5 W Sioux Falls, SD4:32 PM CDTMinnehaha County

    Report from mPING.

  • 1.00″ quarter size Emergency Mngr
    4 NW Harrisburg, SD4:36 PM CDTLincoln County

    Report from 85th and Western of quarter size hail.

  • 1.00″ quarter size Public
    Tea, SD4:38 PM CDTLincoln County
  • 1.00″ quarter size Public
    Valley Springs, SD5:02 PM CDTMinnehaha 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 states hit on May 17, 2026

Iowa1 city · 1.50″Michigan2 cities · 1.50″Florida1 city · 1.00″Nebraska2 cities · 1.00″
The full US hail map for May 17, 2026 →

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″February 28, 20261 city · 1.00″September 2, 20251 city · 1.00″
Every hail day across South Dakota →
FAQ

South Dakota hail on May 17, 2026

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 Sioux Falls. Every city hit is listed above with its own stone size.

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