Hail in Custer · Sep 13, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Custer 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.
Convective day · Sep 13, 2026 · noon–noon UTC
Severity
The 19th most severe storm Custer 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
- 0 /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 Custer 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 Custer, so there is one map to show, not two.
The storm in context
Where Sep 13, 2026 sits in Custer's hail record.
This was Custer's 20th recorded hail day, arriving 17 days after the Aug 27, 2026 storm. By severity it ranks 19th of the 20 storms we have logged here. Radar put the day's largest stone over Custer at 0.5" — radar-estimated size aloft.
The Sep 13, 2026 convective day was bigger than Custer: the same system put hail over 171 other tracked cities, 17 of them in South Dakota. Nearest: Scenic (63 miles east, up to 0.5"); Belle Fourche (83 miles north, up to 0.5"); Alzada (92 miles north, up to 0.75").
These maps are stills. In the app this date is one of 20 Custer 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 Custer. 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.
Below the severe threshold
What 0.5" hail means for Custer 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
Custer hail history
Other storms in Custer.
Estimated-size surface Aug 27, 2026
1"
Estimated-size surface Aug 21, 2026
0.75"
Estimated-size surface Aug 12, 2026
2.25"
Estimated-size surface Aug 11, 2026
4"
Estimated-size surface Jul 31, 2026
3.5"
Estimated-size surface Jul 30, 2026
0.5"
Estimated-size surface Jul 28, 2026
1"
Estimated-size surface Jul 17, 2026
1"
Estimated-size surface Jul 9, 2026
2"
Estimated-size surface Jul 8, 2026
1.25"
Estimated-size surface Jul 4, 2026
2.5"
Estimated-size surface Jul 3, 2026
1.75"
Estimated-size surface Jun 26, 2026
1.75"
Estimated-size surface Jun 22, 2026
1.25"
Estimated-size surface Jun 7, 2026
0.5"
Estimated-size surface Jun 6, 2026
1.75"
Estimated-size surface Jun 2, 2026
1"
Estimated-size surface Jun 1, 2026
0.5"
Estimated-size surface May 30, 2026
1.75"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.