Wind gust 60 mph
10 SSE Alcester Union County
“Wind measured by anemometer. (FSD)”
— NOAA / SPC storm report
/ Storm field report · Union
Hail in Alcester · Sep 1, 2026
Hit 11 days ago
The estimated-size surface reached 1.5" aloft; NEXRAD logged no point detections over Alcester that day. Open it on the live map to see the swath over the streets.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Peak hail signal 1.5" ≈ ping-pong ball · radar-estimated size aloft
Homes in the hail footprint 3,288
Ground reports 1 1 wind
Radar surfaces 1 Estimated size only
Convective day · Sep 1, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Alcester has seen in the last 12 months
Composite score · 4.3 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.3 /10
- Peak hail signal
- 38 /100
- Homes exposed
- 70 /100
- Ground truth
- 17 /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 Alcester saw the hail — from two instruments
Sep 1, 2026 · Alcester, 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.
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
1.5"
Only the radar-estimated size surface resolved for Sep 1, 2026 — this storm produced no NEXRAD point detections over Alcester, so there is one map to show, not two.
The storm in context
Where Sep 1, 2026 sits in Alcester's hail record.
This was Alcester's 8th recorded hail day, arriving 29 days after the Aug 3, 2026 storm. By severity it ranks 2nd of the 8 storms we have logged here. Radar put the day's largest stone over Alcester at 1.5" — radar-estimated size aloft.
The Sep 1, 2026 convective day was bigger than Alcester: the same system put hail over 362 other tracked cities, 42 of them in South Dakota. Nearest: Elk Point (10 miles south, up to 1.5"); Akron (10 miles southeast, up to 1"); Burbank (13 miles southwest, up to 1.5").
These maps are stills. In the app this date is one of 8 Alcester 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
1 report 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
1 reportHigh damage potential
What 1.5" hail means for Alcester 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.
3,288 homes × $12,000 avg. claim
Potential roof exposure
$39M
Potential roof exposure — 3,288 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 16 jobs
- Illustrative work
- ~$240K
Close just 0.5% of the 3,288 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 $690 on top of the $150 plan.
Alcester hail history
Other storms in Alcester.
8 recorded storm days in Alcester, SD
Estimated-size surface Storm date Alcester / SD
Aug 3, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Alcester / SD
Jul 25, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Alcester / SD
Jul 2, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Alcester / SD
Jun 30, 2026
1.75" Signatures 1.75" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Alcester / SD
Jun 29, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Alcester / SD
May 31, 2026
1.75" Signatures 1.75" Estimated 1.5"
1 ground report Open report →
Estimated-size surface Storm date Alcester / SD
May 17, 2026
1.5" Signatures 1.5" Estimated 0.75"
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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
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.