Wind gust 60 mph
1 S White River Mellette County
“(UNR)”
— NOAA / SPC storm report
/ Storm field report · Mellette
Hail in White River · Aug 11, 2026
Hit 32 days ago
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 1.75" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 1,709
Ground reports 2 2 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Aug 11, 2026 · noon–noon UTC
Severity
The 3rd most severe storm White River has seen in the last 12 months
Composite score · 4.7 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.7 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 65 /100
- Ground truth
- 33 /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 White River saw the hail — from two instruments
Aug 11, 2026 · White River, SD
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
0"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
1.75"
The storm in context
Where Aug 11, 2026 sits in White River's hail record.
This was White River's 10th recorded hail day, arriving 12 days after the Jul 30, 2026 storm. By severity it ranks 3rd of the 13 storms we have logged here. Radar put the day's largest stone over White River at 1.75" — radar-estimated size aloft.
The Aug 11, 2026 convective day was bigger than White River: the same system put hail over 1,041 other tracked cities, 44 of them in South Dakota. Nearest: Wood (17 miles southeast, up to 2"); Belvidere (18 miles northwest, up to 1"); Mission (24 miles southeast, up to 1.5").
These maps are stills. In the app this date is one of 13 White River 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
2 reports filed with the NWS
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.
Wind reports
2 reports Wind gust 96 mph
1 S White River Mellette County
“(UNR)”
— NOAA / SPC storm report
High damage potential
What 1.75" hail means for White River 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.
1,709 homes × $12,000 avg. claim
Potential roof exposure
$21M
Potential roof exposure — 1,709 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 9 jobs
- Illustrative work
- ~$135K
Close just 0.5% of the 1,709 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
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 $359 on top of the $150 plan.
White River hail history
Other storms in White River.
13 recorded storm days in White River, SD
Estimated-size surface Storm date White River / SD
Aug 27, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Aug 24, 2026
1.5" Estimated 1.5"
1 ground report Open report →
Estimated-size surface Storm date White River / SD
Aug 18, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jul 30, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jul 29, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jul 25, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jul 3, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jul 2, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jun 28, 2026
4" Signatures 4" Estimated 2.75"
2 ground reports Open report →
Estimated-size surface Storm date White River / SD
Jun 20, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jun 4, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date White River / SD
Jun 2, 2026
2.5" Signatures 2.5" Estimated 2"
2 ground reports Open report →
Take your next area into the field.
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Aug 28, 2026.