Rapid City, SD

Hail map for Rapid City, SD — August 11, 2026

NOAA radar detected hail up to 2.00″ — hen egg size — within 5 miles of Rapid City on August 11, 2026.

Hail swath map for Rapid City, SD on August 11, 2026 showing 2.00 inch hail.
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Max hail size
2.00″
hen egg
Impact rating
7/10
from stone size
Size bands over the city
3
distinct radar bands
Measured on the ground
3.00″
13.9 mi away · Public

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

Homeowners

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This page covers Rapid City 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 August 11, 2026

South Bend, IN2.00″Mishawaka, IN2.00″Greencastle, IN2.00″Indianapolis, IN1.50″Bismarck, ND1.50″Terre Haute, IN1.50″Greenwood, IN1.50″Mandan, ND1.50″Lenoir, NC1.50″Weston, WI1.50″Beech Grove, IN1.50″Smithfield, NC1.50″
Every South Dakota city hit on August 11, 2026 →

Other hail dates for Rapid City

August 23, 20261.50″August 18, 20262.00″August 16, 20261.00″July 7, 20261.00″July 2, 20261.50″July 1, 20261.00″June 22, 20261.50″May 30, 20261.00″May 21, 20261.00″February 28, 20261.00″August 18, 20252.00″August 10, 20251.00″
Every storm over Rapid City →

What people on the ground measured in Rapid City, SD on August 11, 2026

15 reports filed with the National Weather Service — 4 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.

  • 3.00″ baseball size Public
    1 NNE Hayward, SD · 13.9 mi away4:15 PM CDTPennington County

    Reported on Rushmore Ranch Rd. Photo via social media. Time estimated based on radar.

  • 2.50″ hen egg size NWS Employee
    Rockerville, SD · 10.5 mi away3:55 PM CDTPennington County
  • 2.50″ hen egg size Public
    1 S Rockerville, SD · 11.6 mi away4:02 PM CDTPennington County

    Photo via social media. Time estimated based on radar.

  • 2.50″ hen egg size Public
    3 NNW Johnson Siding, SD · 11.7 mi away3:30 PM CDTPennington County

    Along Bogus Jim Rd. Photo via social media. Time estimated based on radar.

  • 2.00″ hen egg size CoCoRaHS
    4 NNE Johnson Siding, SD · 9.5 mi away3:30 PM CDTPennington County

    Hail ranged from pea size to 2 inches in diameter. Dented vehicles and shredded leaves reported.

  • 2.00″ hen egg size Public
    Rockerville, SD · 10.5 mi away3:59 PM CDTPennington County

    Numerous broken windshields reported. Hail covered the ground and roads. Photo and report via social media. Time estimated based on radar.

  • 2.00″ hen egg size Public
    2 SSE Rockerville, SD · 11.4 mi away4:03 PM CDTPennington County

    Relayed via NWS Cheyenne. Time estimated based on radar.

  • 1.75″ golf ball size Public
    4 ENE Johnson Siding, SD · 7.0 mi away3:32 PM CDTPennington County

    Miller Flats area. Photo via social media. Time estimated based on radar.

  • 1.75″ golf ball size Public
    3 ENE Rockerville, SD · 7.7 mi away3:59 PM CDTPennington County

    At Bear Country USA. Hail covered the ground. Time estimated based on radar.

  • 1.75″ golf ball size Public
    3 NNE Johnson Siding, SD · 9.5 mi away3:31 PM CDTPennington County

    Near the intersection of Nemo Rd and Norris Peak Rd. Photo via social media. Time estimated based on radar.

  • 1.75″ golf ball size Trained Spotter
    4 N Johnson Siding, SD · 10.5 mi away3:31 PM CDTPennington County
  • 1.50″ half dollar size NWS Employee
    2 W Black Hawk, SD · 7.6 mi away3:34 PM CDTMeade County
  • 1.25″ half dollar size Public
    2 NE Rockerville, SD · 8.5 mi away3:55 PM CDTPennington County

    Behind Old MacDonalds Farm. Hail lightly covered the ground. Photo via social media. Time estimated based on radar.

  • 1.00″ quarter size NWS Employee
    2 W Black Hawk, SD · 7.6 mi away3:29 PM CDTMeade County
  • 0.75″ penny size Public
    4 NW Dwtn Rapid City, SD · 3.7 mi away3:39 PM CDTPennington County

    Also receiving very heavy rain. Exit 55

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.

Buyer's guides

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FAQ

Rapid City hail on August 11, 2026

NOAA radar estimated stones up to 2.00 inches — hen egg size — within about 5 miles of Rapid City that day, across 3 distinct size bands. Sizes vary street to street inside a single swath.

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