Right now
Nothing else has been detected within 20 km in the last 24 hours.
Reported by USGS Water Services today.
It is the only one we have recorded within 20 km of this point since 21 March 2026. The last comparable one was on 21 March 2026.
What the source measured
USGS Water Services reported: Surveyed point in middle of Emerson Rd, East of gage. Flood impact elevation courtesy of US Army Corps of Engineers. | Gage height: 97.69 ft | Ref. point: 89.70 ft
Urban PEI: 488,697 within a heuristic 50 km radius; not unique people.
How we know
One source: USGS Water Services. Not yet confirmed by a second, independent source.
Our own score for this event is 62 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 | River Flood |
| Severity | Critical |
| Calamity Score (ours) | 62 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 48.9136, -122.3391 |
| Nearest City | Townline (16 km) |
| Urban exposure index (PEI) | 488.7K within 50 km |
| Impact Tier | severe |
| Date | 2026-10-02, time not reported by the source |
| Source | https://waterdata.usgs.gov/monitoring-location/12211190/ |
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: nwis. Occurrence: 2026-10-02, time not reported by the source.
First archived: 2026-03-21T06:36:36.835Z. Material modification: 2026-10-02T15:13:21.613Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-10-02T15:13:21.613Z · data_change
Index 11 → 62; severity low → critical.
2026-10-02T05:14:08.057Z · model_change
Index 14 → 11; version 1 → 5.
6 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| SiteNo | 12211190 |
| StationName | NOOKSACK R OVERFLOW AT EMERSON RD AT EVERSON, WA |
| FloodCategory | major_flooding |
| EstimatedSeverity | major_flooding |
| SeverityProvenance | calamity-rtfi-excess-v1 |
| GageHeight | 29.78 |
| RpElevation | 27.34 |
| Unit | m |
| OriginalGageHeight | 97.69 |
| OriginalRpElevation | 89.7 |
| OriginalUnit | ft |
| SourceImpactThreshold | {"id":19077,"name":"ROAD","value":89.69999694824219,"unit":"ft"} |
| RpName | ROAD |
| NwsId | NEEW1 |
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.
Review the area, threshold and delivery channel in your account.
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