Right now
The most recent data we hold from NOAA arrived 2 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 13:00 UTC. It is kept here as a record.
No stronger detection stands among the 126 recorded within 20 km of this point since 15 March 2026 — 73 others 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: Severe Thunderstorm Warning issued June 29 at 7:46AM CDT until June 29 at 8:00AM CDT by NWS Aberdeen SD
Urban PEI: 28,102 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 26, 2026 · score 34 · 6.6 km
- July 25, 2026 · score 34 · 8.0 km
- August 30, 2026 · score 34 · 11.1 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 40 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 | High |
| Calamity Score (ours) | 40 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 45.3527, -98.1549 |
| Nearest City | Aberdeen (29 km) |
| Urban exposure index (PEI) | 28.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-29T12:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9167fcd13d328683d33786b3e52cf456 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-29T12:46:00.000Z.
First archived: 2026-06-29T12:50:24.658Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, SD; Clark, SD; Day, SD; Hand, SD; Spink, SD; Brown, SD; Edmunds, SD; Faulk, SD; Spink, SD; Brown, SD; Day, SD; Faulk, SD; Marshall, SD; Spink, SD |
| Headline | Severe Thunderstorm Warning issued June 29 at 7:46AM CDT until June 29 at 8:00AM CDT by NWS Aberdeen SD |
| Expires | 2026-06-29T08:00:00-05:00 |
| SenderName | NWS Aberdeen SD |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9167fcd13d328683d33786b3e52cf456d7d864a1.001.1","noaa_urn:oid:2.49.0.1.840.0.ad51d4d8e9e4fae46c94de7ebe16d5f274f60cd5.001.1","noaa_urn:oid:2.49.0.1.840.0.6d3bca57ad17500847cf7400fbcbba0ff48d42d3.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 84 |
| Spc Location | 5 NW Redfield |
| Spc County | Spink |
| Spc State | SD |
| Spc Comments | Ambient Weather Station. (ABR) |
| MergedSources | [{"id":"spc_wind_44.93_-98.60_1","source":"spc","severity":"high","severityValue":70,"timestamp":1782735660000,"latitude":44.93,"longitude":-98.6}] |
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.
Review the area, threshold and delivery channel in your account.
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