Hail size 1"
9 NE Ralph Harding County
“(UNR)”
— NOAA / SPC storm report
/ Storm field report · Harding
Hail in Ralph · Aug 23, 2026
Hit 20 days ago
The estimated-size surface reached 2.5" aloft; NEXRAD logged no point detections over Ralph that day. At 2.5" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Peak hail signal 2.5" ≈ baseball · radar-estimated size aloft
Homes in the hail footprint 562
Ground reports 3 2 hail · 1 wind
Radar surfaces 1 Estimated size only
Convective day · Aug 23, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Ralph has seen in the last 12 months
Composite score · 5.9 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.9 /10
- Peak hail signal
- 63 /100
- Homes exposed
- 55 /100
- Ground truth
- 50 /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 Ralph saw the hail — from two instruments
Aug 23, 2026 · Ralph, SD
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar-estimated hail size Surface resolved
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
2.5"
Only the radar-estimated size surface resolved for Aug 23, 2026 — this storm produced no NEXRAD point detections over Ralph, so there is one map to show, not two.
The storm in context
Where Aug 23, 2026 sits in Ralph's hail record.
This was Ralph's 5th recorded hail day, arriving 6 days after the Aug 17, 2026 storm. By severity it ranks 2nd of the 5 storms we have logged here. Radar put the day's largest stone over Ralph at 2.5" — radar-estimated size aloft.
The Aug 23, 2026 convective day was bigger than Ralph: the same system put hail over 185 other tracked cities, 18 of them in South Dakota. Nearest: Ludlow (10 miles west, up to 1.5"); Lodgepole (12 miles southeast, up to 1.75"); Scranton (18 miles north, up to 2.75").
These maps are stills. In the app this date is one of 5 Ralph 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
3 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.
Hail reports
2 reports Hail size 1"
4 N Ralph Harding County
“Hail covers the ground (UNR)”
— NOAA / SPC storm report
Wind reports
1 report Wind gust 61 mph
7 NNE Ralph Harding County
“(UNR)”
— NOAA / SPC storm report
Severe hail signal
What 2.5" hail means for Ralph roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
562 homes × $12,000 avg. claim
Potential roof exposure
$6.7M
Potential roof exposure — 562 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 562 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 $118 on top of the $150 plan.
Estimated-size surface Storm date Ralph / SD
Aug 17, 2026
2" Estimated 2"
1 ground report Open report →
Estimated-size surface Storm date Ralph / SD
Aug 10, 2026
3" Estimated 3"
1 ground report Open report →
Estimated-size surface Storm date Ralph / SD
Jun 27, 2026
4" Signatures 4" Estimated 3"
No ground reports filed Open report →
Estimated-size surface Storm date Ralph / SD
May 21, 2026
0.5" Estimated 0.5"
No ground reports filed 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 24, 2026.