Right now
The most recent data we hold from NOAA arrived 2 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 12 September 2026 at 22:15 UTC. It is kept here as a record.
It is the 29th strongest of the 63 detections recorded within 20 km of this point since 23 June 2026. The last comparable one was on 4 September 2026. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 12 at 12:10PM MST until September 12 at 3:15PM MST by NWS Tucson AZ
An estimated 838,104 people live within 50 km of this point.
Nearby, since 23 June 2026
- August 6, 2026 · score 48 · 4.4 km
- August 4, 2026 · score 48 · 5.5 km
- August 11, 2026 · score 48 · 10.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 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) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 32.1362, -111.2692 |
| Nearest City | Drexel Heights (23 km) |
| Population Exposed | 838.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-12T19:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c6eaf8f576e643f3b8e21555602ed5584196735a.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Pima, AZ |
| Headline | Flash Flood Warning issued September 12 at 12:10PM MST until September 12 at 3:15PM MST by NWS Tucson AZ |
| Expires | 2026-09-12T15:15:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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