Hail in Bonesteel · Aug 23, 2026
The estimated-size surface reached 1.5" aloft; NEXRAD logged no point detections over Bonesteel that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 23, 2026 · noon–noon UTC
Severity
The 5th most severe storm Bonesteel has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 38 /100
- Homes exposed
- 38 /100
- Ground truth
- 0 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Bonesteel saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Aug 23, 2026 — this storm produced no NEXRAD point detections over Bonesteel, so there is one map to show, not two.
The storm in context
Where Aug 23, 2026 sits in Bonesteel's hail record.
This was Bonesteel's 7th recorded hail day, arriving 17 days after the Aug 6, 2026 storm. By severity it ranks 5th of the 9 storms we have logged here. Radar put the day's largest stone over Bonesteel at 1.5" — radar-estimated size aloft.
The Aug 23, 2026 convective day was bigger than Bonesteel: the same system put hail over 185 other tracked cities, 18 of them in South Dakota. Nearest: Geddes (17 miles northeast, up to 1"); Platte (22 miles north, up to 1.25"); Lake Andes (24 miles east, up to 0.5").
These maps are stills. In the app this date is one of 9 Bonesteel storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
No ground reports were filed with the National Weather Service for this storm over Bonesteel. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
High damage potential
What 1.5" hail means for Bonesteel roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$900K
Potential roof exposure — 75 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
August 2028
Claims from this storm can typically be filed until around August 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $16 on top of the $150 plan.
Bonesteel hail history
Other storms in Bonesteel.
Sep 7, 2026
1.5"
Estimated-size surface Sep 1, 2026
2"
Estimated-size surface Aug 6, 2026
0.75"
Estimated-size surface Aug 3, 2026
1"
Estimated-size surface Jul 2, 2026
1.75"
Estimated-size surface Jun 30, 2026
1.75"
Estimated-size surface Jun 27, 2026
1"
Estimated-size surface Jun 3, 2026
0.75"Take your next area into the field.
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