Reported by SPC today.
No stronger detection stands among the 93 recorded within 20 km of this point since 15 March 2026 — 32 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind 63 kt near 11 SSE Hereford, Meade, SD. (UNR)
An estimated 73,569 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 3, 2026 · score 39 · 1.9 km
- July 2, 2026 · score 39 · 7.1 km
- June 5, 2026 · score 39 · 10.4 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 74 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 74% |
| Coordinates | 44.2300, -102.8300 |
| Nearest City | Rapid City (36 km) |
| Population Exposed | 73.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T03:17:14.691Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 63 |
| Location | 11 SSE Hereford |
| County | Meade |
| State | SD |
| Comments | (UNR) |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 39/100, near Rapid City (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.