Right now
The most recent data we hold from NOAA arrived 8 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert expired on 28 September 2026 at 23:45 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 15 July 2026. The last comparable one was on 15 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 28 at 3:56PM PDT until September 28 at 4:45PM PDT by NWS Las Vegas NV
Urban PEI: 68,357 within a heuristic 50 km radius; not unique people.
Nearby, since 15 July 2026
- September 28, 2026 · score 32 · 0.8 km
- July 15, 2026 · 12.0 km
- August 12, 2026 · 19.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 35.5108, -114.3979 |
| Nearest City | Bullhead City (43 km) |
| Urban exposure index (PEI) | 68.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-28T22:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.10e8cef8c49bce89d0d31cc1855bd3d27f9bd7c2.001.1 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-09-28T22:56:00.000Z.
First archived: 2026-09-28T22:56:20.261Z. Material modification: 2026-09-28T23:18:05.330Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-28T23:01:58.679Z · data_change
Index 28 → 32.
1 retained revision changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| MessageId | urn:oid:2.49.0.1.840.0.10e8cef8c49bce89d0d31cc1855bd3d27f9bd7c2.001.1 |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mohave, AZ; Mohave, AZ; San Bernardino, CA |
| Headline | Severe Thunderstorm Warning issued September 28 at 3:56PM PDT until September 28 at 4:45PM PDT by NWS Las Vegas NV |
| Expires | 2026-09-28T16:45:00-07:00 |
| SenderName | NWS Las Vegas NV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.10e8cef8c49bce89d0d31cc1855bd3d27f9bd7c2.001.1","noaa_urn:oid:2.49.0.1.840.0.245198d137fff39649e5cb129b841e29622ea150.001.1"] |
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.
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