Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 6 km from here.
This alert expired on 17 July 2026 at 07:00 UTC. It is kept here as a record.
It is the 7th strongest of the 48 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 16 at 9:04PM MST until July 17 at 12:00AM MST by NWS Phoenix AZ
Urban PEI: 3,942,508 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- September 17, 2026 · score 46 · 6.0 km
- September 16, 2026 · score 46 · 8.0 km
- September 15, 2026 · score 46 · 8.7 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 | 0.81/1 |
| Coordinates | 33.3939, -111.6636 |
| Nearest City | Apache Junction (11 km) |
| Urban exposure index (PEI) | 3.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T04:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.b9649c519b151b53cf5060e884a2b556 |
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: 2026-07-17T04:04:00.000Z.
First archived: 2026-07-17T04:15:39.929Z. 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; Gila, AZ; Maricopa, AZ; Maricopa, AZ; Pinal, AZ and 2 more areas |
| Headline | Flash Flood Warning issued July 16 at 9:04PM MST until July 17 at 12:00AM MST by NWS Phoenix AZ |
| Expires | 2026-07-17T00:00:00-07:00 |
| SenderName | NWS Phoenix AZ |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b9649c519b151b53cf5060e884a2b556620f3ec5.001.1","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.d3a8783dbf847816725989ea4064f83c6aafb394.001.1","noaa_urn:oid:2.49.0.1.840.0.582afebfd473d5a9da5cb2c92bf083afcc892482.001.1","noaa_urn:oid:2.49.0.1.840.0.be48870c935834f87771e4980d9bd4ea6a516f38.001.1"] |
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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