Reported by SPC today.
No stronger detection stands among the 255 recorded within 20 km of this point since 17 May 2026 — 135 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Hail 175 in near 1 WSW Marty, Charles Mix, SD. In addition to golf ball sized hail... winds were gusting at 40-50 mph... and rainfall was heavy. (FSD)
Nearby, since 17 May 2026
- September 1, 2026 · score 28 · 16.7 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 52 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 52% |
| Coordinates | 42.9900, -98.4400 |
| Nearest City | Mitchell (87 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-02T06:31:29.704Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 175 |
| Location | 1 WSW Marty |
| County | Charles Mix |
| State | SD |
| Comments | In addition to golf ball sized hail... winds were gusting at 40-50 mph... and rainfall was heavy. (FSD) |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.