Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 September 2026 at 22:45 UTC. It is kept here as a record.
It is the 27th strongest of the 69 detections recorded within 20 km of this point since 13 April 2026. The last comparable one was on 10 September 2026. 27 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 11 at 3:05PM MST until September 11 at 3:45PM MST by NWS Tucson AZ
An estimated 351,094 people live within 50 km of this point.
Nearby, since 13 April 2026
- August 28, 2026 · score 49 · 7.3 km
- July 11, 2026 · score 43 · 8.8 km
- July 25, 2026 · score 37 · 16.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % 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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 31.6200, -110.9114 |
| Nearest City | Rio Rico (18 km) |
| Population Exposed | 351.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T22:05:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.bb49fe4d3bacb0a415150ec3b9d279ab2e6530f8.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Santa Cruz, AZ |
| Headline | Severe Thunderstorm Warning issued September 11 at 3:05PM MST until September 11 at 3:45PM MST by NWS Tucson AZ |
| Expires | 2026-09-11T15:45:00-07:00 |
| SenderName | NWS Tucson 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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