Hail in Chamberlain · Sep 13, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Chamberlain that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 13, 2026 · noon–noon UTC
Severity
The 6th most severe storm Chamberlain has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 44 /100
- Ground truth
- 0 /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 Chamberlain saw the hail — from two instruments
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.
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.
Only the radar-estimated size surface resolved for Sep 13, 2026 — this storm produced no NEXRAD point detections over Chamberlain, so there is one map to show, not two.
The storm in context
Where Sep 13, 2026 sits in Chamberlain's hail record.
This was Chamberlain's 10th recorded hail day, arriving 12 days after the Sep 1, 2026 storm. By severity it ranks 6th of the 10 storms we have logged here. Radar put the day's largest stone over Chamberlain at 0.75" — radar-estimated size aloft.
The Sep 13, 2026 convective day was bigger than Chamberlain: the same system put hail over 171 other tracked cities, 17 of them in South Dakota. Nearest: Pukwana (4 miles northeast, up to 0.5"); Kimball (15 miles east, up to 0.5"); White Lake (27 miles northeast, up to 0.75").
These maps are stills. In the app this date is one of 10 Chamberlain 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
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.
The National Weather Service logged no spotter reports for this storm over Chamberlain. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Near the severe threshold
What 0.75" hail means for Chamberlain roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$2M
Potential roof exposure — 163 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 163 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 $34 on top of the $150 plan.
Chamberlain hail history
Other storms in Chamberlain.
Estimated-size surface Sep 1, 2026
0.5"
Estimated-size surface Aug 12, 2026
0.5"
Estimated-size surface Jul 25, 2026
1.25"
Estimated-size surface Jul 2, 2026
2.5"
Estimated-size surface Jun 30, 2026
Estimated-size surface Jun 9, 2026
1"
Estimated-size surface Jun 4, 2026
1.75"
Estimated-size surface Jun 3, 2026
1.75"
NEXRAD surface May 18, 2026
0.5"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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