Hail in Belle Fourche · Sep 13, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Belle Fourche 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 10th most severe storm Belle Fourche 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
- 13 /100
- Homes exposed
- 26 /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 Belle Fourche 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 Belle Fourche, so there is one map to show, not two.
The storm in context
Where Sep 13, 2026 sits in Belle Fourche's hail record.
This was Belle Fourche's 10th recorded hail day, arriving 45 days after the Jul 30, 2026 storm. By severity it ranks 10th of the 10 storms we have logged here. Radar put the day's largest stone over Belle Fourche at 0.5" — radar-estimated size aloft.
The Sep 13, 2026 convective day was bigger than Belle Fourche: the same system put hail over 171 other tracked cities, 17 of them in South Dakota. Nearest: Alzada (22 miles west, up to 0.75"); Custer (83 miles south, up to 0.5"); Scenic (104 miles southeast, up to 0.5").
These maps are stills. In the app this date is one of 10 Belle Fourche 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.
No ground reports were filed with the National Weather Service for this storm over Belle Fourche. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Below the severe threshold
What 0.5" hail means for Belle Fourche roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$216K
Potential roof exposure — 18 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
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 $4 on top of the $150 plan.
Belle Fourche hail history
Other storms in Belle Fourche.
Estimated-size surface Jul 30, 2026
1.5"
Estimated-size surface Jul 16, 2026
0.75"
Estimated-size surface Jul 8, 2026
1"
Estimated-size surface Jul 3, 2026
1.5"
Estimated-size surface Jul 2, 2026
3.25"
Estimated-size surface Jun 7, 2026
4"
Estimated-size surface Jun 2, 2026
1.5"
Estimated-size surface Jun 1, 2026
1.5"
Estimated-size surface May 30, 2026
1.5"Take your next area into the field.
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