Right now
The most recent data we hold from CO OPS arrived this minute, and this point is in it.
79 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by CO OPS today.
It is the 2nd strongest of the 1276 detections recorded within 20 km of this point since 8 March 2026. Another comparable one was recorded here earlier the same day. 1038 more were recorded here in the fortnight before it.
What the source measured
CO OPS reported: Water level 0.51m above predicted at Seattle, WA. Observed: 3.06m, Predicted: 2.55m (MLLW datum).
The observed water level was 3.06 m, against 2.55 m predicted.
An estimated 3,023,420 people live within 50 km of this point.
Nearby, since 8 March 2026
- September 10, 2026 · score 74 · 0.0 km
- September 7, 2026 · score 52 · 0.0 km
- September 6, 2026 · score 52 · 0.0 km
How we know
One source: CO OPS. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 70 % 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 | Floods |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 70% |
| Coordinates | 47.6026, -122.3393 |
| Nearest City | Seattle (1 km) |
| Population Exposed | 3.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T23:06:00.000Z |
| Source | https://tidesandcurrents.noaa.gov/stationhome.html?id=9447130 |
Score Breakdown
Technical Details
| StationId | 9447130 |
| StationName | Seattle, WA |
| ObservedM | 3.06 |
| PredictedM | 2.55 |
| SurgeM | 0.51 |
| Datum | MLLW |
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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