Right now
The most recent data we hold from NOAA arrived 69 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 00:15 UTC. It is kept here as a record.
It is the 18th strongest of the 34 detections recorded within 20 km of this point since 3 June 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 3 at 6:38PM CDT until June 3 at 7:15PM CDT by NWS Aberdeen SD
Nearby, since 3 June 2026
- July 4, 2026 · score 22 · 7.4 km
- July 4, 2026 · score 22 · 20.2 km
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 | 44.2712, -99.2773 |
| Nearest City | Mitchell (118 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-03T23:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ef7ae469a176e468fe8d9eeefbfc5633 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, SD; Marshall, SD; Beadle, SD; Lyman, SD and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 3 at 6:38PM CDT until June 3 at 7:15PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-03T19:15:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ef7ae469a176e468fe8d9eeefbfc5633d0c3c03a.001.1","noaa_urn:oid:2.49.0.1.840.0.ee391ba969356e2f480ca769fe487a8b97f8a020.001.1","noaa_urn:oid:2.49.0.1.840.0.d781a83717c506979cf8b152f2b4fa47624fe6f2.001.1","noaa_urn:oid:2.49.0.1.840.0.56eba901ed3778916d9aa5adbe41da2caf09d75a.001.1","noaa_urn:oid:2.49.0.1.840.0.24649e90ac0cd5eb4862130c27cbcc9e53f4f732.001.1"] |
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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