Right now
The most recent data we hold from NOAA arrived 8 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 11 km from here.
This alert is in force until 16 September 2026, 16:30 UTC.
It is the 8th strongest of the 22 detections recorded within 20 km of this point since 17 July 2026. The last comparable one was on 15 September 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 16 at 7:29AM MDT until September 16 at 10:30AM MDT by NWS Salt Lake City UT
Nearby, since 17 July 2026
- August 9, 2026 · score 22 · 8.0 km
- September 15, 2026 · score 16 · 11.2 km
- July 26, 2026 · score 22 · 15.4 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 | 0.62/1 |
| Coordinates | 37.7467, -111.3250 |
| Nearest City | Cedar City (153 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-16T13:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0e26e2afb6a25d68aca5d6bc0a80cdee913a8adf.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: 2026-09-16T13:29:00.000Z.
First archived: 2026-09-16T13:34:10.420Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-16T14:39:56.596Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Garfield, UT |
| Headline | Flash Flood Warning issued September 16 at 7:29AM MDT until September 16 at 10:30AM MDT by NWS Salt Lake City UT |
| Expires | 2026-09-16T10:30:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| 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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