Right now
The most recent data we hold from NOAA arrived 1 minute 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 July 2026 at 04:30 UTC. It is kept here as a record.
It is the 9th strongest of the 19 detections recorded within 20 km of this point since 12 July 2026. The last comparable one was on 14 July 2026. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 16 at 8:06PM MST until July 16 at 9:30PM MST by NWS Tucson AZ
Urban PEI: 222,265 within a heuristic 50 km radius; not unique people.
Nearby, since 12 July 2026
- July 13, 2026 · score 43 · 2.0 km
- September 16, 2026 · score 37 · 7.4 km
- September 12, 2026 · score 37 · 8.9 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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. 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 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 32.8423, -111.3285 |
| Nearest City | Florence (22 km) |
| Urban exposure index (PEI) | 222.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T03:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.0eb352b721defa7e7ea68e40c7e94636 |
Physical priority index · v1. 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: 2026-07-17T03:06:00.000Z.
First archived: 2026-07-17T03:19:30.213Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Pima, AZ; Gila, AZ; Maricopa, AZ; Maricopa, AZ; Pinal, AZ and 3 more areas |
| Headline | Flash Flood Warning issued July 16 at 8:06PM MST until July 16 at 9:30PM MST by NWS Tucson AZ |
| Expires | 2026-07-16T21:30:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0eb352b721defa7e7ea68e40c7e9463606fe061e.001.1","noaa_urn:oid:2.49.0.1.840.0.74a017c8727161956c33e5e5ddd7f9b1f362da5d.001.1","noaa_urn:oid:2.49.0.1.840.0.b3cc8334725cbde1d862f7743dede19b7e60b8e7.001.1","noaa_urn:oid:2.49.0.1.840.0.dc9aa4e08667acaa3cca37f594c3706ba9787994.001.1","noaa_urn:oid:2.49.0.1.840.0.d3a8783dbf847816725989ea4064f83c6aafb394.001.1","noaa_urn:oid:2.49.0.1.840.0.582afebfd473d5a9da5cb2c92bf083afcc892482.001.1","noaa_urn:oid:2.49.0.1.840.0.786e2d23f209dd0e9b4f26cf90861b7f9048ea89.001.1","noaa_urn:oid:2.49.0.1.840.0.9fc636f672c468f5bf26697ec9901366e76e0c55.001.1","noaa_urn:oid:2.49.0.1.840.0.6674050aeae07d2c66aa604379c3b1c0a7f451c7.001.1"] |
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.
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