3.5
Earthquake Details: 11 km NNE of Atka, Alaska
Oct 24, 2026, 05:57:31
- Depth
- 206.26 km
- Felt reports
- No data
Source: USGSUpdated: Oct 25, 2026, 05:19 AM UTC
A magnitude 3.5 earthquake occurred on Oct 24, 2026 at 05:57:31. Epicenter: 11 km NNE of Atka, Alaska. Reported depth: 206.26 km.
Tsunami information
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Time & depth
- Local time
- Oct 23, 2026, 20:57:31 HADT
- UTC
- Oct 24, 2026, 05:57:31 UTC
206.26 km · Intermediate-focus
Between 70 and 300 km deep.
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Nearby earthquakes · 11
M2.359 km SE of Atka, AlaskaBeforeM2.284 km SW of Atka, AlaskaBeforeM2.177 km SSW of Adak, AlaskaBeforeM2.342 km SSW of Nikolski, AlaskaBeforeM2.254 km SW of Adak, AlaskaBeforeM3.740 km SSE of Nikolski, AlaskaBeforeM4.0Fox Islands, Aleutian IslandsBeforeM4.6100 km NNW of Nikolski, AlaskaBeforeM3.2135 km SW of Nikolski, AlaskaBeforeM2.829 km WNW of Atka, AlaskaBeforeM4.6153 km WNW of Adak, AlaskaAfter
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 3.5
us6000u4n9
- Depth:
- 206.26 km
- Time:
- Updated:
- Oct 25, 2026, 05:19 AM UTC
Technical Details
Depth206.26 km
Significance188
Latitude52.2944
Longitude-174.1628
Event IDus6000u4n9
Magnitude3.5
Updated:Oct 25, 2026, 05:19:23 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, 05:19 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).