Right now
The most recent data we hold from NOAA arrived 52 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 17 July 2026 at 03:30 UTC. It is kept here as a record.
It is the 54th strongest of the 101 detections recorded within 20 km of this point since 16 June 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 16 at 5:59PM MST until July 16 at 8:30PM MST by NWS Tucson AZ
Urban PEI: 85,963 within a heuristic 50 km radius; not unique people.
Nearby, since 16 June 2026
- July 17, 2026 · score 39 · 4.0 km
- September 10, 2026 · score 32 · 9.1 km
- July 26, 2026 · score 34 · 11.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 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) | 32 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 31.8857, -110.4456 |
| Nearest City | Sierra Vista (40 km) |
| Urban exposure index (PEI) | 86.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T00:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6ea9d8cd08941c68af8f70305b8f83a3 |
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: 2026-07-17T00:59:00.000Z.
First archived: 2026-07-17T01:21:04.348Z. 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; Cochise, AZ; Graham, AZ and 1 more areas |
| Headline | Flash Flood Warning issued July 16 at 5:59PM MST until July 16 at 8:30PM MST by NWS Tucson AZ |
| Expires | 2026-07-16T20:30:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6ea9d8cd08941c68af8f70305b8f83a3edf593db.001.1","noaa_urn:oid:2.49.0.1.840.0.f45ec13ecc3875759cd146e473f6e4caf4a59bc6.001.1","noaa_urn:oid:2.49.0.1.840.0.03bbd4cfeb498ac8d5b4c5cbcb8d900231278fcd.001.1","noaa_urn:oid:2.49.0.1.840.0.bc40c2a69a1432c77570bf72b4b941e54f3c6b85.001.1","noaa_urn:oid:2.49.0.1.840.0.6674050aeae07d2c66aa604379c3b1c0a7f451c7.001.1","noaa_urn:oid:2.49.0.1.840.0.13ffc5d26361fc6db9dce87dcea910ef2f5987bc.001.1","noaa_urn:oid:2.49.0.1.840.0.a702a90fdcf1d13a584a3006693a88e18feb1ca7.001.1","noaa_urn:oid:2.49.0.1.840.0.56ac75117acbd55768c78df9ddbe7c2245f8490e.001.1","noaa_urn:oid:2.49.0.1.840.0.9938d1729b1fc35285eb6ca9bb3120a9eb57d5f9.001.1","noaa_urn:oid:2.49.0.1.840.0.cc1aeb360db903506dd8af6e8bc4c68059f67642.001.1","noaa_urn:oid:2.49.0.1.840.0.06cffd1a66b510a18846ca710f5e5a34079b9fde.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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