Right now
The most recent data we hold from NOAA arrived 73 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 17 September 2026 at 01:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 8 detections recorded within 20 km of this point since 17 July 2026. The last comparable one was on 17 July 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 16 at 5:23PM MST until September 16 at 6:15PM MST by NWS Phoenix AZ
Urban PEI: 53,553 within a heuristic 50 km radius; not unique people.
Nearby, since 17 July 2026
- September 17, 2026 · score 32 · 11.9 km
- July 17, 2026 · score 39 · 23.9 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 | 34.1240, -114.2800 |
| Nearest City | Lake Havasu City (40 km) |
| Urban exposure index (PEI) | 53.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-17T00:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.8b0de317bd7df238783cdce1d8507bbec1d5a83c.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: 2026-09-17T00:23:00.000Z.
First archived: 2026-09-17T00:26:55.060Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | La Paz, AZ |
| Headline | Severe Thunderstorm Warning issued September 16 at 5:23PM MST until September 16 at 6:15PM MST by NWS Phoenix AZ |
| Expires | 2026-09-16T18:15:00-07:00 |
| SenderName | NWS Phoenix AZ |
| 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.
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