This alert expired on 4 September 2026 at 03:00 UTC. It is kept here as a record.
It is the 35th strongest of the 108 detections recorded within 20 km of this point since 17 June 2026. The last comparable one was on 1 September 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 3 at 7:13PM MST until September 3 at 8:00PM MST by NWS Tucson AZ
An estimated 855,005 people live within 50 km of this point.
Nearby, since 17 June 2026
- July 12, 2026 · score 48 · 2.0 km
- August 28, 2026 · score 54 · 5.1 km
- August 28, 2026 · score 54 · 7.5 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 82 % 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 | 82% |
| Coordinates | 32.2438, -111.1274 |
| Nearest City | Flowing Wells (12 km) |
| Population Exposed | 855.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T02:13:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a898595aa49c992a141be43c1a74848e08214f74.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Pinal, AZ; Pima, AZ |
| Headline | Flash Flood Warning issued September 3 at 7:13PM MST until September 3 at 8:00PM MST by NWS Tucson AZ |
| Expires | 2026-09-03T20:00:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a898595aa49c992a141be43c1a74848e08214f74.001.1","noaa_urn:oid:2.49.0.1.840.0.caeeb561aaf009abb67f4b8ae3dee04a5b2099b6.001.1"] |
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.
Want to know when something happens near Flowing Wells?
Calamity.live data shows a weather event with CalamityScore 41/100, near Flowing Wells (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.