3.4
Earthquake Details: 57 km SSE of Adak, Alaska, United States
8/16/2026, 1:32:01 AM
A magnitude 3.4 earthquake occurred near 57 km SSE of Adak, Alaska, United States on 8/16/2026 at 1:32:01 AM. The seismic event was recorded at a depth of 18.4 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Technical Details
Depth18.4 km
Significance178
Latitude51.3720
Longitude-176.4200
Event IDaka2026qdkaum
Magnitude3.4
Updated:8/17/2026, 5:21:05 PM
External Resources
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Time & depth
- Local time
- 8/16/2026, 1:32:01 AM
- UTC
- 8/16/2026, 1:32:01 AM UTC
18.4 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M3.4215 km WSW of Adak, Alaska, United StatesBeforeM3.791 km SE of Atka, Alaska, United StatesBeforeM3.2200 km W of Adak, Alaska, United StatesBeforeM3.1153 km S of Atka, Alaska, United StatesBeforeM2.9179 km ESE of Atka, Alaska, United StatesBeforeM3.0182 km E of Atka, Alaska, United StatesBeforeM3.0240 km WSW of Adak, Alaska, United StatesBeforeM3.0163 km SW of Nikolski, Alaska, United StatesBeforeM2.9161 km SW of Nikolski, Alaska, United StatesBeforeM3.177 km W of Nikolski, Alaska, United StatesBeforeM3.046 km S of Atka, Alaska, United StatesAfterM3.2100 km S of Atka, Alaska, United StatesAfter
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: Aug 17, 2026, 05:21 PM 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.