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 5 September 2026 at 21:30 UTC. It is kept here as a record.
It is the 48th strongest of the 75 detections recorded within 20 km of this point since 30 May 2026. The last comparable one was on 29 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 5 at 3:04PM MDT until September 5 at 3:30PM MDT by NWS North Platte NE
Nearby, since 30 May 2026
- August 12, 2026 · score 22 · 14.1 km
- June 21, 2026 · score 22 · 18.9 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 60 % 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 | 60% |
| Coordinates | 42.8211, -102.6800 |
| Nearest City | Rapid City (147 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T21:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.cac116334e0ea2b058ec999bc818e66ab5c9855d.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sheridan, NE |
| Headline | Severe Thunderstorm Warning issued September 5 at 3:04PM 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 |
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.