Right now
The most recent data we hold from NOAA arrived 3 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 18 June 2026 at 04:45 UTC. It is kept here as a record.
It is the 12th strongest of the 19 detections recorded within 20 km of this point since 18 June 2026.
What the source measured
NOAA reported: Flash Flood Warning issued June 17 at 6:43PM MST until June 17 at 9:45PM MST by NWS Tucson AZ
Urban PEI: 325,387 within a heuristic 50 km radius; not unique people.
Nearby, since 18 June 2026
- June 18, 2026 · score 37 · 0.0 km
- August 3, 2026 · score 43 · 3.4 km
- July 28, 2026 · score 39 · 16.2 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 | 0.79/1 |
| Coordinates | 31.5589, -111.3422 |
| Nearest City | Rio Rico (36 km) |
| Urban exposure index (PEI) | 325.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T01:43:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.056eccdce7fa0525e7062f2261e457b0a7067c16.001.1 |
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: 2026-06-18T01:43:00.000Z.
First archived: 2026-06-18T04:35:07.297Z. 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; Santa Cruz, AZ |
| Headline | Flash Flood Warning issued June 17 at 6:43PM MST until June 17 at 9:45PM MST by NWS Tucson AZ |
| Expires | 2026-06-17T21:45:00-07:00 |
| 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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