Right now
The most recent data we hold from NOAA arrived 3 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 1 July 2026 at 08:30 UTC. It is kept here as a record.
It is the 13th strongest of the 47 detections recorded within 20 km of this point since 13 April 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 2:54AM CDT until July 1 at 3:30AM CDT by NWS Aberdeen SD
An estimated 15,669 people live within 50 km of this point.
Nearby, since 13 April 2026
- June 1, 2026 · score 40 · 19.1 km
- May 31, 2026 · score 58 · 21.7 km
- June 28, 2026 · score 34 · 23.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 43.4282, -97.6422 |
| Nearest City | Mitchell (44 km) |
| Population Exposed | 15.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-01T07:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2cdefab1a1fac04f224cf6b89228a295 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Buffalo, SD; Lyman, SD; Hanson, SD; Hutchinson, SD; Lake, SD; Lincoln, SD; McCook, SD; Miner, SD; Minnehaha, SD; Turner, SD; Lyon, IA; Sioux, IA; Lincoln, SD; Union, SD and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 1 at 2:54AM CDT until July 1 at 3:30AM CDT by NWS Aberdeen SD |
| Expires | 2026-07-01T03:30:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2cdefab1a1fac04f224cf6b89228a2952e7be123.001.1","noaa_urn:oid:2.49.0.1.840.0.df40fa310c8e53dcc76d3b4b50c3d232ea98fa6d.001.1","noaa_urn:oid:2.49.0.1.840.0.9eb0802e35e9d253c77ae9a243876af9ae66de38.001.1","noaa_urn:oid:2.49.0.1.840.0.7414ae36be990680b552c63b429ab509e7eadee6.001.1","noaa_urn:oid:2.49.0.1.840.0.a6a16c54ace78aa35bf8c4243f021056bc99e474.002.1"] |
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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