This alert expired on 2 July 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 15 March 2026 — one other scored the same. 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: Tornado Warning issued July 2 at 4:42PM CDT until July 2 at 5:30PM CDT by NWS Sioux Falls SD
An estimated 15,669 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 18, 2026 · score 28 · 20.1 km
- June 15, 2026 · score 22 · 22.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 77 % 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 | Critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 77% |
| Coordinates | 43.9783, -98.2775 |
| Nearest City | Mitchell (36 km) |
| Population Exposed | 15.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-02T21:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.6702620c072399756360fa726e1c99c9 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Aurora, SD; Jerauld, SD; Sanborn, SD |
| Headline | Tornado Warning issued July 2 at 4:42PM CDT until July 2 at 5:30PM CDT by NWS Sioux Falls SD |
| Expires | 2026-07-02T17:30:00-05:00 |
| SenderName | NWS Sioux Falls SD |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6702620c072399756360fa726e1c99c95b555406.001.1","noaa_urn:oid:2.49.0.1.840.0.3e3afca20dad9dae73182a6c517d4e5c22eed95e.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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.