3.5
Earthquake Details: 66 km SE of Atka, Alaska
Oct 3, 2026, 21:25:25
A magnitude 3.5 earthquake occurred near 66 km SE of Atka, Alaska on Oct 3, 2026 at 21:25:25. The seismic event was recorded at a depth of 35 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
View recent seismic activity near this event:
Technical Details
Depth35 km
Significance188
Latitude51.7225
Longitude-173.6127
Event IDus6000tzfa
Magnitude3.5
Updated:Oct 4, 2026, 00:30:11 UTC
External Resources
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Time & depth
- Local time
- Oct 3, 2026, 21:25:25
- UTC
- Oct 3, 2026, 21:25:25 UTC
35 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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 4, 2026, 00:30 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.