Right now
The most recent data we hold from NOAA arrived 35 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 5 September 2026 at 21:30 UTC. It is kept here as a record.
It is the 58th strongest of the 97 detections recorded within 20 km of this point since 5 May 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 5 at 3:16PM MDT until September 5 at 3:30PM MDT by NWS North Platte NE
Nearby, since 5 May 2026
- July 10, 2026 · score 22 · 14.8 km
- July 28, 2026 · score 22 · 16.5 km
- August 28, 2026 · score 28 · 20.1 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, at 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 |
| Our confidence | 61% |
| Coordinates | 42.4766, -102.8750 |
| Nearest City | Rapid City (181 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T21:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4d823ac00c4a72ebf2c6d68bfcd19a1b6c2a1bca.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sheridan, NE; Box Butte, NE |
| Headline | Severe Thunderstorm Warning issued September 5 at 3:16PM MDT until September 5 at 3:30PM MDT by NWS North Platte NE |
| Expires | 2026-09-05T15:30:00-06:00 |
| SenderName | NWS North Platte NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4d823ac00c4a72ebf2c6d68bfcd19a1b6c2a1bca.001.1","noaa_urn:oid:2.49.0.1.840.0.902f912f1c22116f767a93e4ff403b0449ed2d8e.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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.