Right now
The most recent data we hold from NOAA arrived 57 minutes ago, and this point is in it.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert is in force until 29 September 2026, 13:45 UTC.
No stronger detection stands among the 6 recorded within 20 km of this point since 13 May 2026 — 5 others scored the same. 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 September 29 at 3:37AM MST until September 29 at 6:45AM MST by NWS Flagstaff AZ
Nearby, since 13 May 2026
- September 29, 2026 · score 16 · 0.3 km
- September 11, 2026 · 18.9 km
- July 26, 2026 · 21.2 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 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) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 37.5184, -111.6137 |
| Nearest City | Cedar City (129 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-29T10:37:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.66feadf8d2b1381db936e49030a8e0bc0ac8bbe4.001.1 |
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: 2026-09-29T10:37:00.000Z.
First archived: 2026-09-29T02:56:09.423Z. Material modification: 2026-09-29T10:41:38.715Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
14 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| MessageId | urn:oid:2.49.0.1.840.0.66feadf8d2b1381db936e49030a8e0bc0ac8bbe4.001.1 |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coconino, AZ; Kane, UT; Emery, UT |
| Headline | Flash Flood Warning issued September 29 at 3:37AM MST until September 29 at 6:45AM MST by NWS Flagstaff AZ |
| Expires | 2026-09-29T06:45:00-07:00 |
| SenderName | NWS Flagstaff AZ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7dfebb6b16579962ca0922d09b2fd7f73e63406c.001.1","noaa_urn:oid:2.49.0.1.840.0.7568556db5ca642ca38f9cd91c57d009a4552c0d.001.1","noaa_urn:oid:2.49.0.1.840.0.5c77c88b6831ec2e752b1c429075e598a762268b.001.1","noaa_urn:oid:2.49.0.1.840.0.04fd4b080d38f7924f5c73702f684026dd2135e7.001.1"] |
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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