Sioux Falls, SD

Hail map for Sioux Falls, SD — May 17, 2026

NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of Sioux Falls on May 17, 2026.

Hail swath map for Sioux Falls, SD on May 17, 2026 showing 1.50 inch hail.
Max hail size
1.50″
half dollar
Impact rating
5/10
from stone size
Size bands over the city
2
distinct radar bands
Reached the ground
30%
NOAA POSH probability
Measured on the ground
1.50″
3.8 mi away · Trained Spotter

NOAA's Probability of Severe Hail peaked at 30% over Sioux Falls that day — low to moderate: the radar signature was there, ground impact less certain. It is a separate model from the size estimate above: one asks how big the stones were in the storm, the other asks whether they made it down.

Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

Roofing contractors

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Homeowners

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This page covers Sioux Falls as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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Other towns hit on May 17, 2026

Sioux City, IA1.50″Saginaw Township North, MI1.50″Bonita Springs, FL1.00″Bay City, MI1.00″Norfolk, NE1.00″Columbus, NE1.00″
Every South Dakota city hit on May 17, 2026 →

Other hail dates for Sioux Falls

July 4, 20261.00″May 24, 20261.00″August 16, 20251.00″July 27, 20251.00″July 23, 20251.00″July 9, 20251.00″August 27, 20241.00″August 26, 20242.00″August 4, 20241.50″July 30, 20241.00″August 23, 20231.00″
Every storm over Sioux Falls →

What people on the ground measured in Sioux Falls, SD on May 17, 2026

5 reports filed with the National Weather Service — 2 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.

  • 1.50″ half dollar size Trained Spotter
    4 SSE Sioux Falls, SD · 3.8 mi away4:47 PM CDTLincoln County
  • 1.00″ quarter size Emergency Mngr
    4 NW Harrisburg, SD · 4.5 mi away4:36 PM CDTLincoln County

    Report from 85th and Western of quarter size hail.

  • 1.00″ quarter size Public
    5 W Sioux Falls, SD · 5.7 mi away4:32 PM CDTMinnehaha County

    Report from mPING.

  • 1.00″ quarter size Public
    Tea, SD · 8.6 mi away4:38 PM CDTLincoln County
  • 1.00″ quarter size Public
    Valley Springs, SD · 13.8 mi away5:02 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.

FAQ

Sioux Falls hail on May 17, 2026

NOAA radar estimated stones up to 1.50 inches — half dollar size — within about 5 miles of Sioux Falls that day, across 2 distinct size bands. Sizes vary street to street inside a single swath.

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