Right now
The most recent data we hold from SPC arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
22 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by SPC today.
No stronger detection stands among the 25 recorded within 20 km of this point since 8 April 2026 — 20 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Hail 150 in near 4 N Klein Ranch, Corson, SD. Windshield damaged. (ABR)
Nearby, since 8 April 2026
- September 6, 2026 · score 28 · 0.0 km
- September 5, 2026 · score 28 · 0.0 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 28 out of 100, at 70 % 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 | 70% |
| Coordinates | 45.7200, -101.3500 |
| Nearest City | Mandan (128 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T21:25:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 150 |
| Location | 4 N Klein Ranch |
| County | Corson |
| State | SD |
| Comments | Windshield damaged. (ABR) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 4 N Klein Ranch |
| Iem County | Corson |
| Iem State | SD |
| Iem Wfo | ABR |
| Iem Remark | Windshield damaged. |
| MergedSources | [{"id":"iem_H_45.720_-101.350_1788643500000","source":"iem","severity":"low","severityValue":25,"timestamp":1788643500000,"latitude":45.72,"longitude":-101.35}] |
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.