3.7
Earthquake Details: 20 km E of Castle Rock, Washington
Sep 5, 2026, 11:09:28
A magnitude 3.7 earthquake occurred near 20 km E of Castle Rock, Washington on Sep 5, 2026 at 11:09:28. The seismic event was recorded at a depth of 17.62 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth17.62 km
Significance639
Latitude46.2470
Longitude-122.6438
Event IDuw714095342
Magnitude3.7
Updated:Sep 6, 2026, 08:38:36 UTC
External Resources
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Time & depth
- Local time
- Sep 5, 2026, 04:09:28 PDT
- UTC
- Sep 5, 2026, 11:09:28 UTC
17.62 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 10
M1.84 km WSW of Yacolt, WashingtonBeforeM2.24 km NNE of Snoqualmie, WashingtonBeforeM3.2196 km W of Port Orford, OregonBeforeM1.96 km NE of Medford, OregonBeforeM2.581 km W of Neskowin, OregonBeforeM1.23 km E of Granite Falls, WashingtonBeforeM2.4WashingtonBeforeM1.83 km SW of Kapowsin, WashingtonBeforeM2.962 km W of Yachats, OregonBeforeM3.382 km W of Yachats, OregonBefore
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Sep 6, 2026, 08:38 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.