Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert is in force until 11 September 2026, 22:45 UTC.
It is one of only 4 we have recorded within 20 km of this point since 15 July 2026. 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 11 at 1:50PM MST until September 11 at 3:45PM 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 60 % 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 | 60% |
| Coordinates | 34.3656, -110.1033 |
| Nearest City | Payson (114 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-11T20:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0723880e948a1303042ed3ce9e032e6116273303.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Navajo, AZ |
| Headline | Flash Flood Warning issued September 11 at 1:50PM MST until September 11 at 3:45PM MST by NWS Flagstaff AZ |
| Expires | 2026-09-11T15:45:00-07:00 |
| SenderName | NWS Flagstaff AZ |
| HasExactCoords | true |
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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