4.6
Earthquake Details: 100 km NNW of Nikolski, Alaska
Oct 23, 2026, 23:08:25
- Depth
- 230.47 km
- Felt reports
- 0
Source: USGSUpdated: Oct 25, 2026, 09:23 PM UTC
A magnitude 4.6 earthquake occurred on Oct 23, 2026 at 23:08:25. Epicenter: 100 km NNW of Nikolski, Alaska. Reported depth: 230.47 km.
Tsunami information
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Time & depth
- Local time
- Oct 23, 2026, 12:08:25 GMT-11
- UTC
- Oct 23, 2026, 23:08:25 UTC
230.47 km · Intermediate-focus
Between 70 and 300 km deep.
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Nearby earthquakes · 12
M4.0195 km SE of Akutan, AlaskaBeforeM4.5158 km S of False Pass, AlaskaBeforeM3.2159 km S of False Pass, AlaskaBeforeM3.3151 km S of False Pass, AlaskaBeforeM4.0169 km S of False Pass, AlaskaBeforeM3.740 km SSE of Nikolski, AlaskaBeforeM4.0Fox Islands, Aleutian IslandsBeforeM3.2135 km SW of Nikolski, AlaskaAfterM3.511 km NNE of Atka, AlaskaAfterM4.581 km SSE of Akutan, AlaskaAfterM4.682 km SSE of Akutan, AlaskaAfterM4.381 km SSE of Akutan, AlaskaAfter
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 4.6
us6000u4hx
- Depth:
- 230.47 km
- Time:
- Updated:
- Oct 25, 2026, 09:23 PM UTC
Technical Details
Depth230.47 km
Significance326
Latitude53.7815
Longitude-169.4133
Event IDus6000u4hx
Magnitude4.6
Updated:Oct 25, 2026, 21:23:16 UTC
Regional Seismicity
View recent seismic activity near this event:
External Resources
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 25, 2026, 21:23 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under 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.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).