Right now
The most recent data we hold from NOAA arrived 3 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 <1 km from here.
This alert expired on 13 September 2026 at 21:15 UTC. It is kept here as a record.
It is one of only 4 we have recorded within 20 km of this point since 12 August 2026. The last comparable one was on 12 August 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 13 at 11:14AM MST until September 13 at 2:15PM MST by NWS Flagstaff AZ
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, at 62 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 |
| Our confidence | 62% |
| Coordinates | 35.5367, -112.5751 |
| Nearest City | Flagstaff (92 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-13T18:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.88152a3c29921a6e49675d2adb501d3d9f8b4455.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Yavapai, AZ; Coconino, AZ |
| Headline | Flash Flood Warning issued September 13 at 11:14AM MST until September 13 at 2:15PM MST by NWS Flagstaff AZ |
| Expires | 2026-09-13T14:15:00-07:00 |
| SenderName | NWS Flagstaff AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.88152a3c29921a6e49675d2adb501d3d9f8b4455.001.1","noaa_urn:oid:2.49.0.1.840.0.838ff4792f60e5083142bb626564c79cf18ed4b7.001.1"] |
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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