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 4 June 2026 at 04:30 UTC. It is kept here as a record.
No stronger detection stands among the 184 recorded within 20 km of this point since 15 March 2026 — 27 others scored the same. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued June 3 at 10:28PM CDT until June 3 at 11:00PM CDT by NWS Aberdeen SD
Nearby, since 15 March 2026
- August 31, 2026 · score 22 · 0.0 km
- August 27, 2026 · score 22 · 0.0 km
- August 12, 2026 · score 22 · 0.0 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 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) | 34 / 100 |
| Our confidence | 61% |
| Coordinates | 43.9000, -99.4000 |
| Nearest City | Mitchell (112 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-04T03:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.9083288ff5f4d0ebf226f4ba2f7dc00b |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Deuel, SD; Hamlin, SD; Aurora, SD; Beadle, SD; Brookings, SD; Brule, SD; Charles Mix, SD; Davison, SD; Douglas, SD; Gregory, SD; Hanson, SD; Hutchinson, SD; Jerauld, SD; Kingsbury, SD; Lake, SD; McCook, SD; Miner, SD; Sanborn, SD |
| Headline | Tornado Watch issued June 3 at 10:28PM CDT until June 3 at 11:00PM CDT by NWS Aberdeen SD |
| Expires | 2026-06-03T23:30:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9083288ff5f4d0ebf226f4ba2f7dc00b35c30fa3.002.1","noaa_urn:oid:2.49.0.1.840.0.199efab1599b5e3d643875fe53b2430d2feb4231.001.1"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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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