1.6
Earthquake Details: 20 km E of Castle Rock, Washington, United States
Oct 7, 2026, 20:15:59
- Depth
- 17.4 km
- Felt reports
- No data
Source: UWUpdated: Oct 8, 2026, 05:40 PM UTC
A magnitude 1.6 earthquake occurred on Oct 7, 2026 at 20:15:59. Epicenter: 20 km E of Castle Rock, Washington, United States. Reported depth: 17.4 km.
Tsunami information
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Time & depth
- Local time
- Oct 7, 2026, 13:15:59 PDT
- UTC
- Oct 7, 2026, 20:15:59 UTC
17.4 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Nearby major cities
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- UWM 1.57
uw714117561
- Depth:
- 17.4 km
- Time:
- Updated:
- Oct 8, 2026, 05:40 PM UTC
Regional Seismicity
Technical Details
Depth17.4 km
Significance38
Latitude46.2468
Longitude-122.6440
Event IDuw714117561
Magnitude1.6
Updated:Oct 8, 2026, 17:40:44 UTC
External Resources
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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: Oct 8, 2026, 17:40 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.