Right now
The most recent data we hold from NOAA arrived 73 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 17 May 2026 at 18:15 UTC. It is kept here as a record.
No stronger detection stands among the 40 recorded within 20 km of this point since 15 March 2026 — 13 others scored the same. The last comparable one was on 14 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 12:46PM CDT until May 17 at 1:15PM CDT by NWS North Platte NE
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 42.8617, -100.0167 |
| Nearest City | Mitchell (186 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-17T17:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.896492db92acf41df9583f1226d8fb8461ce34bd.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, NE; Keya Paha, NE |
| Headline | Severe Thunderstorm Warning issued May 17 at 12:46PM CDT until May 17 at 1:15PM CDT by NWS North Platte NE |
| Expires | 2026-05-17T13:15:00-05:00 |
| SenderName | NWS North Platte NE |
| HasExactCoords | true |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.