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 4 June 2026 at 01:45 UTC. It is kept here as a record.
It is the 15th strongest of the 31 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 2 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 3 at 8:10PM CDT until June 3 at 8:45PM 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 16 out of 100, at 61 % 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) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 44.2934, -98.4494 |
| Nearest City | Mitchell (73 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-04T01:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c255b15443973bd23ad3ceb9c4621de8 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lyman, SD; Brule, SD; Tripp, SD and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 3 at 8:10PM CDT until June 3 at 8:45PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-03T20:45:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c255b15443973bd23ad3ceb9c4621de8237f5e5f.001.1","noaa_urn:oid:2.49.0.1.840.0.d16b263ed82814e6f231543f3bb32770191a1ec6.001.1","noaa_urn:oid:2.49.0.1.840.0.2008349aa3734a23ae8e330c56255df75786caad.001.1","noaa_urn:oid:2.49.0.1.840.0.7ac83f3d47f8f3dea61fd5407e75dc8bb6acfb35.001.1","noaa_urn:oid:2.49.0.1.840.0.54f7470b0966a4801e9dc74fd5c8f7ff6f22db3f.001.1","noaa_urn:oid:2.49.0.1.840.0.7fe484d78863cb56b8d472615291afad5932900c.001.1","noaa_urn:oid:2.49.0.1.840.0.7beaa72cd2e3961d25fc04ba9ef5e314efeab664.001.1","noaa_urn:oid:2.49.0.1.840.0.dd09d9d393e5f9c68afc399c39d91724c9d20d69.001.1"] |
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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