Reported by SPC today.
No stronger detection stands among the 23 recorded within 20 km of this point since 2 April 2026 — 14 others scored the same. The last comparable one was on 4 August 2026.
What the source measured
SPC reported: Wind 60 kt near 3 NE Mobridge Municipal, Walworth, SD. Spotter estimated 50-60 mph gusts. (ABR)
Nearby, since 2 April 2026
- June 3, 2026 · score 22 · 10.9 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 22 out of 100, at 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 45.5700, -100.3700 |
| Nearest City | Bismarck (141 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T01:19:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 60 |
| Location | 3 NE Mobridge Municipal |
| County | Walworth |
| State | SD |
| Comments | Spotter estimated 50-60 mph gusts. (ABR) |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 3 NE Mobridge Municipal |
| Iem County | Walworth |
| Iem State | SD |
| Iem Wfo | ABR |
| Iem Remark | Spotter estimated 50-60 mph gusts. |
| MergedSources | [{"id":"iem_G_45.570_-100.370_1788139140000","source":"iem","severity":"low","severityValue":25,"timestamp":1788139140000,"latitude":45.57,"longitude":-100.37}] |
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 22/100, near Bismarck (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.