Right now
The most recent data we hold from NOAA arrived 29 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 18 km from here.
This alert expired on 14 September 2026 at 22:33 UTC. It is kept here as a record.
No stronger detection stands among the 10 recorded within 20 km of this point since 11 April 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 14 at 4:23PM MDT until September 14 at 4:30PM MDT by NWS Grand Junction CO
Urban PEI: 42,871 within a heuristic 50 km radius; not unique people.
Nearby, since 11 April 2026
- September 14, 2026 · score 28 · 18.2 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 v5. 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 | 0.81/1 |
| Coordinates | 36.7671, -108.1561 |
| Nearest City | Farmington (7 km) |
| Urban exposure index (PEI) | 42.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-14T22:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.05924c20170e3c09d45be9b80ece84aff77f19bd.001.1 |
Physical priority index · v5. 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: 2026-09-14T22:23:00.000Z.
First archived: 2026-09-14T22:26:14.357Z. 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 | Rio Blanco, CO; Pitkin, CO; San Miguel, CO and 4 more areas |
| Headline | Flash Flood Warning issued September 14 at 4:23PM MDT until September 14 at 4:30PM MDT by NWS Grand Junction CO |
| Expires | 2026-09-14T16:33:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.05924c20170e3c09d45be9b80ece84aff77f19bd.001.1","noaa_urn:oid:2.49.0.1.840.0.8ff13e07d21e8c4b6d02887d7e70a1e0af1061b7.001.1","noaa_urn:oid:2.49.0.1.840.0.ab5c4e2755eb871bbddda79bce7ae46e3bdf7b99.001.1","noaa_urn:oid:2.49.0.1.840.0.2ffe8352e62cd3127e8b853359e3ac057c4ee87c.001.1","noaa_urn:oid:2.49.0.1.840.0.249fbb2c1f7990d142788e28076861fc9ce8910e.001.1","noaa_urn:oid:2.49.0.1.840.0.6e40d8394028e9f46ebd8340a97bdd8bdc9a5d75.001.1","noaa_urn:oid:2.49.0.1.840.0.935418fa2a1ab75605eb33ffc34132b13fc3a37e.001.1","noaa_urn:oid:2.49.0.1.840.0.334abc75fc4e7a0381b9102920b54b6d44c1ffae.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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