Right now
The most recent data we hold from NOAA arrived 24 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 29 June 2026 at 10:00 UTC. It is kept here as a record.
No stronger detection stands among the 43 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. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 29 at 4:42AM CDT until June 29 at 5:00AM CDT by NWS Rapid City SD
Nearby, since 15 March 2026
- August 13, 2026 · score 22 · 16.3 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 71 % 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) | 46 / 100 |
| Our confidence | 71% |
| Coordinates | 43.6060, -100.5050 |
| Nearest City | Mitchell (199 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-29T09:42:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1cdd47ca71ce3cdc14e921b8c4a390964a11e5af.002.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mellette, SD |
| Headline | Tornado Warning issued June 29 at 4:42AM CDT until June 29 at 5:00AM CDT by NWS Rapid City SD |
| Expires | 2026-06-29T05:00:00-05:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 51 |
| Iem Unit | mph |
| Iem City | 11 SW Parmelee |
| Iem County | Todd |
| Iem State | SD |
| Iem Wfo | UNR |
| MergedSources | [{"id":"iem_G_43.230_-101.200_1782723240000","source":"iem","severity":"low","severityValue":25,"timestamp":1782723240000,"latitude":43.23,"longitude":-101.2},{"id":"iem_G_43.230_-101.200_1782722640000","source":"iem","severity":"low","severityValue":25,"timestamp":1782722640000,"latitude":43.23,"longitude":-101.2},{"id":"iem_G_43.210_-101.230_1782722700000","source":"iem","severity":"low","severityValue":25,"timestamp":1782722700000,"latitude":43.21,"longitude":-101.23},{"id":"iem_G_43.210_-101.230_1782723000000","source":"iem","severity":"low","severityValue":25,"timestamp":1782723000000,"latitude":43.21,"longitude":-101.23},{"id":"iem_G_43.230_-101.200_1782724320000","source":"iem","severity":"low","severityValue":25,"timestamp":1782724320000,"latitude":43.23,"longitude":-101.2}] |
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 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.