Right now
The most recent data we hold from NOAA arrived 2 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 21 July 2026 at 02:45 UTC. It is kept here as a record.
It is the 5th strongest of the 15 detections recorded within 20 km of this point since 20 July 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 20 at 4:42PM MST until July 20 at 7:45PM MST by NWS Flagstaff AZ
Nearby, since 20 July 2026
- August 5, 2026 · score 22 · 14.4 km
- July 24, 2026 · score 22 · 22.2 km
- July 29, 2026 · score 22 · 22.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 33.1954, -108.8251 |
| Nearest City | Tanque Verde (208 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-20T23:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.10a9c933d7799cc50f8a660c1d3f8244 |
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: 2026-07-20T23:42:00.000Z.
First archived: 2026-07-20T23:49:45.201Z. 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 | Apache, AZ; Navajo, AZ; Navajo, AZ; Yavapai, AZ and 9 more areas |
| Headline | Flash Flood Warning issued July 20 at 4:42PM MST until July 20 at 7:45PM MST by NWS Flagstaff AZ |
| Expires | 2026-07-20T19:45:00-07:00 |
| SenderName | NWS Flagstaff AZ |
| HasExactCoords | true |
| MergedCount | 15 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.10a9c933d7799cc50f8a660c1d3f8244cfb9fd47.001.1","noaa_urn:oid:2.49.0.1.840.0.5672a2eb195793729aaba221f6ac3cf6076b692d.001.1","noaa_urn:oid:2.49.0.1.840.0.04eaf45f0f73758d53088ed1dbd6b4455b088aac.001.1","noaa_urn:oid:2.49.0.1.840.0.82524dabe4ec6699c9b0f1d80d5ab3d46e708d95.001.1","noaa_urn:oid:2.49.0.1.840.0.2c724d74588c02751b86e262f6064f162f235f89.001.1","noaa_urn:oid:2.49.0.1.840.0.c1a9575913585712ec8fff2c62b39809c1ad3d01.001.1","noaa_urn:oid:2.49.0.1.840.0.6f243666de836740f9cd3e15643131ad409e421e.001.1","noaa_urn:oid:2.49.0.1.840.0.9b99ced6d9504f37737cd8d0b3991cab0914656e.001.1","noaa_urn:oid:2.49.0.1.840.0.a4e9f053ccd3edadc5994c09c0f305134c97087b.001.1","noaa_urn:oid:2.49.0.1.840.0.abe31bf51d7b8cae84d1f10b8653b7f6975b2fab.001.1","noaa_urn:oid:2.49.0.1.840.0.777d7c5eb95a41f8f52185a2cd08827d7fcc4d12.001.1","noaa_urn:oid:2.49.0.1.840.0.f52fc794ae6965802fa86534f9ffc0f47f8f54b7.001.1","noaa_urn:oid:2.49.0.1.840.0.64a95fbe7f43cf6ba3702c5bc1b0c2ea381bac95.001.1","noaa_urn:oid:2.49.0.1.840.0.68287d72a743c9ed1bca6f655aee849363613657.001.1","noaa_urn:oid:2.49.0.1.840.0.c17ddd5e34f7283c798950e3e4d293d01e355721.001.1"] |
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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