Right now
The most recent data we hold from NOAA arrived 68 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 22:45 UTC. It is kept here as a record.
No stronger detection stands among the 65 recorded within 20 km of this point since 15 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 2 at 4:09PM MDT until June 2 at 4:45PM MDT by NWS Rapid City 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 | 43.1267, -103.9363 |
| Nearest City | Rapid City (120 km) |
| Impact Tier | minor |
| Date | 2026-06-02 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e7c0a37992dc57e37b9faf2de2445d4b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Oglala Lakota, SD; Converse, WY; Niobrara, WY; Niobrara, WY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 2 at 4:09PM MDT until June 2 at 4:45PM MDT by NWS Rapid City SD |
| Expires | 2026-06-02T16:45:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e7c0a37992dc57e37b9faf2de2445d4bef1ded41.001.1","noaa_urn:oid:2.49.0.1.840.0.1f10a9c6567371c32e70afaeceb69398f90f937b.001.1","noaa_urn:oid:2.49.0.1.840.0.515044813f0175aa222ba7d1d7c37286cf78c0d1.001.1","noaa_urn:oid:2.49.0.1.840.0.2bec9b03bb63d693286136c3e607ad8c5f72966a.001.1","noaa_urn:oid:2.49.0.1.840.0.64c1059fd8e1385e8ff2a972619793d8dab3d209.001.1","noaa_urn:oid:2.49.0.1.840.0.abac98f2d7f5728a531d4fcdbcedc46566bb4808.002.1"] |
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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