Tornado Rating unknown
5 ENE Sorum Perkins County
“Brief elephant trunk tornado confirmed by two storm chasers. Has since fully dissipated. Time estimated based on reports and radar. (UNR)”
— NOAA / SPC storm report
/ Storm field report · Perkins
Hail in Reva · Aug 23, 2026
Hit 22 days ago
The estimated-size surface reached 1.75" aloft; NEXRAD logged no point detections over Reva that day. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 407
Ground reports 5 2 hail · 2 wind · 1 tornado
Radar surfaces 1 Estimated size only
Convective day · Aug 23, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Reva has seen in the last 12 months
Composite score · 5.4 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.4 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 52 /100
- Ground truth
- 100 /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 Reva saw the hail — from two instruments
Aug 23, 2026 · Reva, SD
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
1.75"
Only the radar-estimated size surface resolved for Aug 23, 2026 — this storm produced no NEXRAD point detections over Reva, so there is one map to show, not two.
The storm in context
Where Aug 23, 2026 sits in Reva's hail record.
This was Reva's 3rd recorded hail day, arriving 57 days after the Jun 27, 2026 storm. By severity it ranks 2nd of the 3 storms we have logged here. Radar put the day's largest stone over Reva at 1.75" — radar-estimated size aloft.
The Aug 23, 2026 convective day was bigger than Reva: the same system put hail over 185 other tracked cities, 18 of them in South Dakota. Nearest: Prairie City (8 miles northeast, up to 2"); Lodgepole (23 miles northeast, up to 1.75"); Ludlow (26 miles north, up to 1.5").
These maps are stills. In the app this date is one of 3 Reva 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
5 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.
Tornado reports
1 reportHail reports
2 reports Hail size 1.75"
10 SSW Reva Harding County
“(UNR)”
— NOAA / SPC storm report
Hail size 1"
4 SSW Reva Harding County
“(UNR)”
— NOAA / SPC storm report
Wind reports
2 reports Wind gust 70 mph
8 WNW Prairie City Perkins County
“6 inch diameter tree branches broken and a round hay bale was blown several hundred feet. (UNR)”
— NOAA / SPC storm report
Wind gust 60 mph
4 SSW Reva Harding County
“(UNR)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
The storm tracked southwest at roughly 10 mph, based on the timing of ground reports.
Hail was reported over 90 minutes, from to .
Reports came from Prairie City and Sorum — beyond Reva itself.
High damage potential
What 1.75" hail means for Reva 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.
407 homes × $12,000 avg. claim
Potential roof exposure
$4.9M
Potential roof exposure — 407 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 2 jobs
- Illustrative work
- ~$30K
Close just 0.5% of the 407 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 $85 on top of the $150 plan.
Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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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.