Right now
The most recent data we hold from NOAA arrived 43 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 03:00 UTC. It is kept here as a record.
It is one of only 4 we have recorded within 20 km of this point since 21 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 21 at 5:58PM MDT until July 21 at 9:00PM MDT by NWS Grand Junction CO
Urban PEI: 42,871 within a heuristic 50 km radius; not unique people.
Nearby, since 21 July 2026
- July 22, 2026 · score 28 · 0.0 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 | 0.80/1 |
| Coordinates | 36.9651, -108.5014 |
| Nearest City | Farmington (36 km) |
| Urban exposure index (PEI) | 42.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T23:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5aff25d6d53be59fb029f3720ff9acee |
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: 2026-07-21T23:58:00.000Z.
First archived: 2026-07-22T00:06:16.477Z. 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 | San Juan, UT; Garfield, CO; McKinley, NM; Sandoval, NM; San Juan, NM and 9 more areas |
| Headline | Flash Flood Warning issued July 21 at 5:58PM MDT until July 21 at 9:00PM MDT by NWS Grand Junction CO |
| Expires | 2026-07-21T21:00:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5aff25d6d53be59fb029f3720ff9aceed8b8b6a9.001.1","noaa_urn:oid:2.49.0.1.840.0.c104ad327058b1b772764a0150ba1267a1d2bb3f.001.1","noaa_urn:oid:2.49.0.1.840.0.bdb3b6a2ad99e7eeb5ec80167f4e79ec4be625a0.001.1","noaa_urn:oid:2.49.0.1.840.0.20284bdb9cf5fd16e9252502e6d25c70c445e47d.001.1","noaa_urn:oid:2.49.0.1.840.0.e5633566bab6e2d1949aca902b5865040de931ca.001.1","noaa_urn:oid:2.49.0.1.840.0.1e71cb5dbd89693bcd57c828b7d439f27dd96d49.001.1","noaa_urn:oid:2.49.0.1.840.0.89bf41c82279b779922f41d2f596380fcb5ac36b.001.1","noaa_urn:oid:2.49.0.1.840.0.a57acac98306ae40caafaa8fbb3c15093760262d.001.1","noaa_urn:oid:2.49.0.1.840.0.b9ffb35200e1a8c3bd7f16067c9d75b2860f386a.001.1","noaa_urn:oid:2.49.0.1.840.0.da6de3859d7c598d6749baae79cda5581cb2ff9f.001.1","noaa_urn:oid:2.49.0.1.840.0.97e4833d1b91c7c22b0b6e4b834b7e72babd117f.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.bdf6064cd1b91a9432e4175c10e195596bd23572.001.1","noaa_urn:oid:2.49.0.1.840.0.e9c09ae791db9077a913246d93460e4f9654f29b.001.1","noaa_urn:oid:2.49.0.1.840.0.c3a80a6d84b857af0ac60b46ea8da13f709992ad.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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