Hail in Fort Pierre · Sep 13, 2026
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Fort Pierre 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 11th most severe storm Fort Pierre 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
- 25 /100
- Homes exposed
- 43 /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 Fort Pierre 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 Fort Pierre, so there is one map to show, not two.
The storm in context
Where Sep 13, 2026 sits in Fort Pierre's hail record.
This was Fort Pierre's 12th recorded hail day, arriving 50 days after the Jul 25, 2026 storm. By severity it ranks 11th of the 12 storms we have logged here. Radar put the day's largest stone over Fort Pierre at 1" — radar-estimated size aloft.
The Sep 13, 2026 convective day was bigger than Fort Pierre: the same system put hail over 171 other tracked cities, 17 of them in South Dakota. Nearest: Midland (39 miles west, up to 0.75"); Philip (59 miles west, up to 0.75"); Quinn (70 miles west, up to 0.5").
These maps are stills. In the app this date is one of 12 Fort Pierre 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.
Nobody on the ground filed a report over Fort Pierre for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Damage-capable hail signal
What 1" hail means for Fort Pierre roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$1.7M
Potential roof exposure — 143 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 143 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 $30 on top of the $150 plan.
Fort Pierre hail history
Other storms in Fort Pierre.
Estimated-size surface Jul 25, 2026
3.5"
Estimated-size surface Jul 7, 2026
1"
Estimated-size surface Jul 2, 2026
2.25"
Estimated-size surface Jun 28, 2026
1.75"
Estimated-size surface Jun 27, 2026
1.75"
Estimated-size surface Jun 26, 2026
1.75"
Estimated-size surface Jun 9, 2026
1.5"
Estimated-size surface Jun 4, 2026
2.5"
Estimated-size surface Jun 3, 2026
1.5"
Estimated-size surface Jun 2, 2026
1.75"
Estimated-size surface Apr 22, 2026
1"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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