Right now
The most recent data we hold from NOAA arrived 7 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 21:45 UTC. It is kept here as a record.
No stronger detection stands among the 45 recorded within 20 km of this point since 17 April 2026 — 19 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 2 at 3:31PM MDT until June 2 at 3:45PM MDT by NWS Rapid City SD
Nearby, since 17 April 2026
- July 31, 2026 · score 22 · 21.9 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.
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 | 43.1100, -103.7463 |
| Nearest City | Rapid City (116 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-02T21:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.aec39d65df6ae7cfcf42c67ffd27defd |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Oglala Lakota, SD; Converse, WY; Niobrara, WY; Bennett, SD; Jackson, SD; Oglala Lakota, SD and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 2 at 3:31PM MDT until June 2 at 3:45PM MDT by NWS Rapid City SD |
| Expires | 2026-06-02T15:45:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.aec39d65df6ae7cfcf42c67ffd27defdaf267832.001.1","noaa_urn:oid:2.49.0.1.840.0.63dc7c8f7ff40aef0f1043f43884b77c965618df.001.1","noaa_urn:oid:2.49.0.1.840.0.94f8765ed4126f5efae9588102f0cf512b5c79a9.001.1","noaa_urn:oid:2.49.0.1.840.0.229ef17654e93676a455c2c7ea43c2c29fc93de5.001.1","noaa_urn:oid:2.49.0.1.840.0.d4319ee936684fbffcaea5b9c9065d058702d5bc.001.1","noaa_urn:oid:2.49.0.1.840.0.3dc86d27a6577c3614fe17906aee3861b3f8d6b5.001.1","noaa_urn:oid:2.49.0.1.840.0.ffdc3ec57c8b6c1d18e65aea272f593328d8ecaf.001.1","noaa_urn:oid:2.49.0.1.840.0.bda29c1a2dca64fe7d8916e4fca6a817506a80f6.001.1","noaa_urn:oid:2.49.0.1.840.0.f9d433f452896e23d3d150d1d9b6aa4c4975a852.001.1"] |
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.
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