Right now
The most recent data we hold from NOAA arrived 9 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 3 June 2026 at 00:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 58 detections recorded within 20 km of this point since 22 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 2 at 6:42PM CDT until June 2 at 7:45PM CDT by NWS Rapid City SD
Nearby, since 22 March 2026
- September 5, 2026 · score 32 · 26.4 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 | 43.8130, -102.5976 |
| Nearest City | Rapid City (59 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-02T23:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5571912af8d45c9821ed4bc3af9fddda |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mellette, SD; Oglala Lakota, SD; Pennington, SD; Crook, WY; Weston, WY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 2 at 6:42PM CDT until June 2 at 7:45PM CDT by NWS Rapid City SD |
| Expires | 2026-06-02T19:45:00-05:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5571912af8d45c9821ed4bc3af9fdddaff87299a.001.1","noaa_urn:oid:2.49.0.1.840.0.f1e93664ccb1c2539ab8b4eaf42475c96eb4312f.001.1","noaa_urn:oid:2.49.0.1.840.0.d937d40c5ed026b7477536478f43c6ede4dfa0d7.001.1","noaa_urn:oid:2.49.0.1.840.0.8745a8b9fbeb9118944d2985e2288741db948525.001.1"] |
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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