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 Prairie City · Aug 23, 2026
Hit 22 days ago
The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Prairie City that day. At 2" — tennis ball — this is a severe hail signal associated with roof damage. 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 2" ≈ tennis ball · radar-estimated size aloft
Homes in the hail footprint 907
Ground reports 8 5 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 Prairie City has seen in the last 12 months
Composite score · 6.0 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.0 /10
- Peak hail signal
- 50 /100
- Homes exposed
- 59 /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 Prairie City saw the hail — from two instruments
Aug 23, 2026 · Prairie City, SD
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.
Radar-estimated hail size Surface resolved
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.
Max size
2"
Only the radar-estimated size surface resolved for Aug 23, 2026 — this storm produced no NEXRAD point detections over Prairie City, so there is one map to show, not two.
The storm in context
Where Aug 23, 2026 sits in Prairie City's hail record.
This was Prairie City's 7th recorded hail day, arriving 6 days after the Aug 17, 2026 storm. By severity it ranks 2nd of the 7 storms we have logged here. Radar put the day's largest stone over Prairie City at 2" — radar-estimated size aloft.
The Aug 23, 2026 convective day was bigger than Prairie City: the same system put hail over 185 other tracked cities, 18 of them in South Dakota. Nearest: Reva (8 miles southwest, up to 1.75"); Lodgepole (17 miles north, up to 1.75"); Ralph (25 miles north, up to 2.5").
These maps are stills. In the app this date is one of 7 Prairie City 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
8 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
5 reports Hail size 1.75"
10 SSW Reva Harding County
“(UNR)”
— NOAA / SPC storm report
Hail size 1"
11 SSE Prairie City Perkins County
“(UNR)”
— NOAA / SPC storm report
Hail size 1.5"
Prairie City Perkins County
“Wind driven hail of at least ping pong ball size via video. Time estimated based on radar. (UNR)”
— NOAA / SPC storm report
Hail size 1"
5 S Prairie City Perkins County
“Most hail was smaller (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 Reva and Sorum — beyond Prairie City itself.
Severe hail signal
What 2" hail means for Prairie City 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.
907 homes × $12,000 avg. claim
Potential roof exposure
$11M
Potential roof exposure — 907 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 5 jobs
- Illustrative work
- ~$75K
Close just 0.5% of the 907 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 $190 on top of the $150 plan.
Prairie City hail history
Other storms in Prairie City.
7 recorded storm days in Prairie City, SD
Estimated-size surface Storm date Prairie City / SD
Aug 17, 2026
1.5" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Prairie City / SD
Aug 10, 2026
4" Estimated 4"
3 ground reports Open report →
Estimated-size surface Storm date Prairie City / SD
Jul 9, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Prairie City / SD
Jul 2, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Prairie City / SD
Jun 27, 2026
2.5" Signatures 2.5" Estimated 2"
No ground reports filed Open report →
Estimated-size surface Storm date Prairie City / SD
Jun 7, 2026
1.75" Estimated 1.75"
1 ground report Open report →
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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.