Right now
The most recent data we hold from NOAA arrived 36 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 10 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 46th strongest of the 55 detections recorded within 20 km of this point since 5 June 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 9 at 6:23PM MDT until June 9 at 7:15PM MDT by NWS North Platte NE
Nearby, since 5 June 2026
- June 28, 2026 · score 22 · 16.2 km
- July 5, 2026 · score 22 · 19.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 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 | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 42.7686, -101.8813 |
| Nearest City | Rapid City (182 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-10T00:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.bceee401f71f280728a677ec876706c0 |
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: 2026-06-10T00:23:00.000Z.
First archived: 2026-06-10T00:25:47.467Z. 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 | Cherry, NE; Sheridan, NE; Arthur, NE; Grant, NE; Hooker, NE; McPherson, NE; Bennett, SD; Jackson, SD; Oglala Lakota, SD and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 9 at 6:23PM MDT until June 9 at 7:15PM MDT by NWS North Platte NE |
| Expires | 2026-06-09T19:15:00-06:00 |
| SenderName | NWS North Platte NE |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bceee401f71f280728a677ec876706c032f456d3.001.1","noaa_urn:oid:2.49.0.1.840.0.2507212993fed7fcbea81fe60ebebf5490841018.002.1","noaa_urn:oid:2.49.0.1.840.0.9e8792c4b3791ed5bd0c8969481818887a420967.001.1","noaa_urn:oid:2.49.0.1.840.0.58b4d646eae1d31cabc6313b079346815725519f.001.1","noaa_urn:oid:2.49.0.1.840.0.5d2706693ff215a621c8fed5a14a9bab7ada23bd.001.1"] |
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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