Right now
The most recent data we hold from NOAA arrived 6 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 10 September 2026 at 00:30 UTC. It is kept here as a record.
It is the 27th strongest of the 47 detections recorded within 20 km of this point since 16 June 2026. The last comparable one was on 4 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 9 at 4:47PM MST until September 9 at 5:30PM MST by NWS Tucson AZ
An estimated 16,901 people live within 50 km of this point.
Nearby, since 16 June 2026
- September 3, 2026 · score 28 · 4.0 km
- June 16, 2026 · score 34 · 6.7 km
- August 6, 2026 · score 22 · 12.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 32.0960, -110.3510 |
| Nearest City | Tanque Verde (40 km) |
| Population Exposed | 16.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-09T23:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.899a56ae0c55e175953706352b83ec2a5b89c6d2.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Graham, AZ; Santa Cruz, AZ |
| Headline | Severe Thunderstorm Warning issued September 9 at 4:47PM MST until September 9 at 5:30PM MST by NWS Tucson AZ |
| Expires | 2026-09-09T17:30:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.899a56ae0c55e175953706352b83ec2a5b89c6d2.001.1","noaa_urn:oid:2.49.0.1.840.0.76f3c8fc23da576c1a03fdcec39de70b545f1a4a.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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