Right now
The most recent data we hold from NOAA arrived 2 hours 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 06:16 UTC. It is kept here as a record.
It is the 6th strongest of the 18 detections recorded within 20 km of this point since 14 July 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 11:06PM MST until July 16 at 11:15PM MST by NWS Phoenix AZ
Urban PEI: 1,052,793 within a heuristic 50 km radius; not unique people.
Nearby, since 14 July 2026
- July 14, 2026 · score 52 · 9.4 km
- July 17, 2026 · score 48 · 10.9 km
- July 25, 2026 · score 39 · 13.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.82/1 |
| Coordinates | 33.6520, -111.4143 |
| Nearest City | Fountain Hills (29 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T06:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.e60443be3e09b0066ab212cabef7ba41 |
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: 2026-07-17T06:06:00.000Z.
First archived: 2026-07-17T06:13:08.756Z. 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 | Maricopa, AZ; Pinal, AZ; Gila, AZ; Maricopa, AZ; Maricopa, AZ and 2 more areas |
| Headline | Flash Flood Warning issued July 16 at 11:06PM MST until July 16 at 11:15PM MST by NWS Phoenix AZ |
| Expires | 2026-07-16T23:16:00-07:00 |
| SenderName | NWS Phoenix AZ |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e60443be3e09b0066ab212cabef7ba419f2bfd29.001.1","noaa_urn:oid:2.49.0.1.840.0.244e0f6bcdf52ca3477cf37239666b4519edc6b1.001.1","noaa_urn:oid:2.49.0.1.840.0.a23321f7509027460ba1532d85a4d992a1483d61.001.1","noaa_urn:oid:2.49.0.1.840.0.286209212e911b0f30b6b063ec1d19029740c037.001.1","noaa_urn:oid:2.49.0.1.840.0.0a37edc201f8f0806d66468c0fd627477deb1e81.001.1","noaa_urn:oid:2.49.0.1.840.0.a953e62a29c0122f530075e1da8d4ca4540b4fb7.001.1","noaa_urn:oid:2.49.0.1.840.0.16f0f0dcecc7bce757f0c53ae6ea85a20dfa7c30.001.1","noaa_urn:oid:2.49.0.1.840.0.19324428722547b48343e34c6b56091eb6a844b4.001.1","noaa_urn:oid:2.49.0.1.840.0.b9649c519b151b53cf5060e884a2b556620f3ec5.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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