This alert expired on 12 August 2026 at 20:03 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 12 August 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 12:53PM PDT until August 12 at 1:00PM PDT by NWS Las Vegas NV
An estimated 1,967,991 people live within 50 km of this point.
Nearby, since 12 August 2026
- August 13, 2026 · score 52 · 10.5 km
- August 13, 2026 · score 52 · 16.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 35.8647, -115.0733 |
| Nearest City | Henderson (21 km) |
| Population Exposed | 2.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T19:53:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clark, NV |
| Headline | Severe Thunderstorm Warning issued August 12 at 12:53PM PDT until August 12 at 1:00PM PDT by NWS Las Vegas NV |
| Expires | 2026-08-12T13:03:00-07:00 |
| SenderName | NWS Las Vegas NV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.37ac3e362cb354d792c3691421c54306ab4e8e89.001.1","noaa_urn:oid:2.49.0.1.840.0.66db256a27eb2ea4597629643e13bf233e6cc959.001.1","noaa_urn:oid:2.49.0.1.840.0.db6e123767e0df877a39a5af548c42bd406168a0.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Henderson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.