Right now
The most recent data we hold from NOAA 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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 2 June 2026 at 23:00 UTC. It is kept here as a record.
No stronger detection stands among the 43 recorded within 20 km of this point since 22 March 2026 — 13 others scored the same. The last comparable one was on 22 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 2 at 5:24PM CDT until June 2 at 6:00PM CDT by NWS Aberdeen SD
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.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 60% |
| Coordinates | 43.5809, -102.8939 |
| Nearest City | Rapid City (62 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-02T22:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1a1a9a0c0cbe44ce1acc70f2c0211544 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Walworth, SD; Haakon, SD; Jackson, SD; Mellette, SD; Jackson, SD and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 2 at 5:24PM CDT until June 2 at 6:00PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-02T18:00:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1a1a9a0c0cbe44ce1acc70f2c0211544c194903c.002.1","noaa_urn:oid:2.49.0.1.840.0.e3bf8505043c4e0c54093640dbf399d26d55c9f0.001.1","noaa_urn:oid:2.49.0.1.840.0.d3398125ea16f6effcb431baacdf2ac39d355261.002.1","noaa_urn:oid:2.49.0.1.840.0.e7c0a37992dc57e37b9faf2de2445d4bef1ded41.001.1","noaa_urn:oid:2.49.0.1.840.0.b9ac21b9ef2e5aff02df84962a8da1c66ae7b63d.001.1","noaa_urn:oid:2.49.0.1.840.0.e06e556b834436366959ee049ea6056b1148e003.001.1","noaa_urn:oid:2.49.0.1.840.0.e886f31128cc9db9f031c1108c1234add920daff.001.1","noaa_urn:oid:2.49.0.1.840.0.2bec9b03bb63d693286136c3e607ad8c5f72966a.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 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?