Right now
The most recent data we hold from NOAA arrived 7 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 22 July 2026 at 01:30 UTC. It is kept here as a record.
It is the 7th strongest of the 19 detections recorded within 20 km of this point since 25 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 21 at 3:30PM MST until July 21 at 6:30PM MST by NWS Flagstaff AZ
Urban PEI: 23,240 within a heuristic 50 km radius; not unique people.
Nearby, since 25 June 2026
- June 25, 2026 · score 34 · 4.6 km
- July 25, 2026 · score 34 · 16.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 35.2659, -108.9019 |
| Nearest City | Gallup (33 km) |
| Urban exposure index (PEI) | 23.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T22:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.97e4833d1b91c7c22b0b6e4b834b7e72 |
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: 2026-07-21T22:30:00.000Z.
First archived: 2026-07-21T22:33:54.431Z. 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 | Navajo, AZ; McKinley, NM; Rio Arriba, NM; Sandoval, NM and 9 more areas |
| Headline | Flash Flood Warning issued July 21 at 3:30PM MST until July 21 at 6:30PM MST by NWS Flagstaff AZ |
| Expires | 2026-07-21T18:30:00-07:00 |
| SenderName | NWS Flagstaff AZ |
| HasExactCoords | true |
| MergedCount | 15 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.97e4833d1b91c7c22b0b6e4b834b7e72babd117f.001.1","noaa_urn:oid:2.49.0.1.840.0.d7d505917ab174c3b33619ddacd6562b9c8449f5.001.1","noaa_urn:oid:2.49.0.1.840.0.fac24587c091ee0255369158b6dfeff95217a57e.001.1","noaa_urn:oid:2.49.0.1.840.0.62fad9b945be33c3c63c590a8208803bea3f4e16.001.1","noaa_urn:oid:2.49.0.1.840.0.90c2129fc5ec6435d15f01952c095791884ac1a9.001.1","noaa_urn:oid:2.49.0.1.840.0.0fd199591f7367ec02d0b7a1c7450186a47608dc.001.1","noaa_urn:oid:2.49.0.1.840.0.baaba6d9103b95b967644a6b68c05ca686021786.001.1","noaa_urn:oid:2.49.0.1.840.0.f9829776d14243374d0f7eefabdb4c91c5495ae1.001.1","noaa_urn:oid:2.49.0.1.840.0.d9c566dc198eff107c5f531066d161413a53c3b3.001.1","noaa_urn:oid:2.49.0.1.840.0.bdf6064cd1b91a9432e4175c10e195596bd23572.001.1","noaa_urn:oid:2.49.0.1.840.0.ec7e4e9d8c558af9c3a6fa4234a4bbfbd0d71891.001.1","noaa_urn:oid:2.49.0.1.840.0.c0abdd160d0ccc9d0de9aa7b56586c5da7f70641.001.1","noaa_urn:oid:2.49.0.1.840.0.3f35652e920a5aedc976d35ab53e6dd57e6bb97b.001.1","noaa_urn:oid:2.49.0.1.840.0.eddbf6004a48121dfab3a505bd06b6ba8630d7c3.001.1","noaa_urn:oid:2.49.0.1.840.0.8b7c15040966ef3c0972bd227e9f1f7afe79fdd8.001.1"] |
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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