This alert expired on 12 August 2026 at 21:45 UTC. It is kept here as a record.
No stronger detection stands among the 14 recorded within 20 km of this point since 12 August 2026 — 11 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 2:35PM PDT until August 12 at 2:45PM PDT by NWS Las Vegas NV
An estimated 1,943,906 people live within 50 km of this point.
Nearby, since 12 August 2026
- August 29, 2026 · score 52 · 19.1 km
- August 28, 2026 · score 46 · 19.1 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 78 % 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 | 78% |
| Coordinates | 36.2013, -114.7537 |
| Nearest City | Boulder City (26 km) |
| Population Exposed | 1.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T21:35:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clark, NV; Mohave, AZ; Clark, NV |
| Headline | Severe Thunderstorm Warning issued August 12 at 2:35PM PDT until August 12 at 2:45PM PDT by NWS Las Vegas NV |
| Expires | 2026-08-12T14:45:00-07:00 |
| SenderName | NWS Las Vegas NV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.13452ee79c71687f1f740bae89cb39cdd858f20d.001.1","noaa_urn:oid:2.49.0.1.840.0.c54fab00b08278b95db4f39e03668d59f6e8afd2.001.1"] |
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 Boulder City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.