Wind gust 59 mph
1 SE Vermillion Clay County
“Measured by personal weather station. (FSD)”
— NOAA / SPC storm report
/ Storm field report · Clay
Hail in Vermillion · Sep 1, 2026
Hit 11 days ago
The estimated-size surface reached 1.75" aloft; NEXRAD logged no point detections over Vermillion that day. 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 5,083
Ground reports 3 3 wind
Radar surfaces 1 Estimated size only
Convective day · Sep 1, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Vermillion has seen in the last 12 months
Composite score · 5.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.2 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 74 /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 Vermillion saw the hail — from two instruments
Sep 1, 2026 · Vermillion, 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 Sep 1, 2026 — this storm produced no NEXRAD point detections over Vermillion, so there is one map to show, not two.
The storm in context
Where Sep 1, 2026 sits in Vermillion's hail record.
This was Vermillion's 5th recorded hail day, arriving 61 days after the Jul 2, 2026 storm. By severity it ranks 2nd of the 5 storms we have logged here. Radar put the day's largest stone over Vermillion at 1.75" — radar-estimated size aloft.
The Sep 1, 2026 convective day was bigger than Vermillion: the same system put hail over 362 other tracked cities, 42 of them in South Dakota. Nearest: Burbank (11 miles east, up to 1.5"); Gayville (11 miles west, up to 1.25"); Saint Helena (13 miles west, up to 1.75").
These maps are stills. In the app this date is one of 5 Vermillion 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.
Wind reports
3 reports Wind gust 62 mph
Vermillion Clay County
“Measured by personal weather staton. (FSD)”
— NOAA / SPC storm report
Wind gust 67 mph
1 SSW Vermillion Clay County
“AWOS system KVMR. (FSD)”
— NOAA / SPC storm report
High damage potential
What 1.75" hail means for Vermillion 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.
5,083 homes × $12,000 avg. claim
Potential roof exposure
$61M
Potential roof exposure — 5,083 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 25 jobs
- Illustrative work
- ~$375K
Close just 0.5% of the 5,083 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
September 2028
Claims from this storm can typically be filed until around September 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 $1,067 on top of the $150 plan.
Vermillion hail history
Other storms in Vermillion.
5 recorded storm days in Vermillion, SD
Estimated-size surface Storm date Vermillion / SD
Jul 2, 2026
1.25" Signatures 1.25" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Vermillion / SD
Jun 29, 2026
1" Signatures 1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Vermillion / SD
May 31, 2026
2.5" Signatures 2.5" Estimated 2"
2 ground reports Open report →
Estimated-size surface Storm date Vermillion / SD
May 17, 2026
2" Signatures 2" Estimated 1"
No ground reports filed Open report →
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 Sep 2, 2026.