Right now
The most recent data we hold from NOAA arrived 8 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 02:38 UTC. It is kept here as a record.
It is the 15th strongest of the 38 detections recorded within 20 km of this point since 12 May 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 3 at 9:28PM CDT until June 3 at 9:30PM CDT by NWS Aberdeen SD
An estimated 45,730 people live within 50 km of this point.
Nearby, since 12 May 2026
- June 4, 2026 · score 34 · 11.5 km
- August 7, 2026 · score 28 · 14.9 km
- July 2, 2026 · score 58 · 22.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 81 % 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) | 28 / 100 |
| Our confidence | 81% |
| Coordinates | 44.4958, -97.2774 |
| Nearest City | Brookings (43 km) |
| Population Exposed | 45.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-04T02:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a743679dca7abacb3c1083ac796ab431 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hamlin, SD; Aurora, SD; Brule, SD; Charles Mix, SD; Davison, SD; Douglas, SD; Hanson, SD; Jerauld, SD; Miner, SD; Sanborn, SD; Lac qui Parle, MN |
| Headline | Severe Thunderstorm Warning issued June 3 at 9:28PM CDT until June 3 at 9:30PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-03T21:38:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a743679dca7abacb3c1083ac796ab43138caf5de.001.1","noaa_urn:oid:2.49.0.1.840.0.47bbe5c9cfaf557226617d95ec8e3152c47fa853.001.1","noaa_urn:oid:2.49.0.1.840.0.3ef3e1be06af5253a874e7b0724c9dae5ef3115e.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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