This alert expired on 2 June 2026 at 23:15 UTC. It is kept here as a record.
No stronger detection stands among the 16 recorded within 20 km of this point since 15 March 2026 — 12 others scored the same. The last comparable one was on 23 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 2 at 5:35PM CDT until June 2 at 6:15PM CDT by NWS Aberdeen SD
Nearby, since 15 March 2026
- June 27, 2026 · score 22 · 12.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 60 % 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 | 60% |
| Coordinates | 44.5958, -100.6687 |
| Nearest City | Aberdeen (196 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-02T22:35:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dewey, SD; Walworth, SD; Haakon, SD; Jackson, SD; Mellette, SD |
| Headline | Severe Thunderstorm Warning issued June 2 at 5:35PM CDT until June 2 at 6:15PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-02T18:15:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6c3a401cd05ac3f8420393718ed63c827223ec9b.001.1","noaa_urn:oid:2.49.0.1.840.0.e3bf8505043c4e0c54093640dbf399d26d55c9f0.001.1"] |
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 Aberdeen (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.