This alert expired on 2 September 2026 at 06:00 UTC. It is kept here as a record.
It is the 156th strongest of the 178 detections recorded within 20 km of this point since 27 April 2026. The last comparable one was on 1 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 1 at 10:43PM CDT until September 2 at 1:00AM CDT by NWS Omaha/Valley NE
Nearby, since 27 April 2026
- June 29, 2026 · score 22 · 0.0 km
- August 31, 2026 · score 16 · 0.0 km
- August 12, 2026 · score 22 · 0.0 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 | 41.5000, -99.9000 |
| Nearest City | North Platte (84 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-02T03:43:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.07daaeaefc90f1a7d2d932844ab46e25f4b81deb.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Antelope, NE; Cedar, NE; Knox, NE; Pierce, NE; Wayne, NE; Custer, NE; Lincoln, NE; Logan, NE; Blaine, NE; Boyd, NE; Brown, NE; Garfield, NE; Holt, NE; Keya Paha, NE; Loup, NE; Rock, NE; Wheeler, NE |
| Headline | Severe Thunderstorm Watch issued September 1 at 10:43PM CDT until September 2 at 1:00AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-09-02T01:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.07daaeaefc90f1a7d2d932844ab46e25f4b81deb.001.1","noaa_urn:oid:2.49.0.1.840.0.d72b5b6eca0592852d659b7c91d955fef788a700.001.1","noaa_urn:oid:2.49.0.1.840.0.d72b5b6eca0592852d659b7c91d955fef788a700.002.1"] |
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.