3.0
Earthquake Details: 188 km SSE of Atka, Alaska, United States
8/18/2026, 10:54:29 PM
A magnitude 3.0 earthquake occurred near 188 km SSE of Atka, Alaska, United States on 8/18/2026 at 10:54:29 PM. The seismic event was recorded at a depth of 20 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Technical Details
Depth20 km
Significance138
Latitude50.7660
Longitude-172.7550
Event IDaka2026qiswhq
Magnitude3.0
Updated:8/19/2026, 6:33:10 AM
External Resources
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Time & depth
- Local time
- 8/18/2026, 10:54:29 PM
- UTC
- 8/18/2026, 10:54:29 PM UTC
20 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M2.7170 km S of Atka, Alaska, United StatesBeforeM3.457 km SSE of Adak, Alaska, United StatesBeforeM3.046 km S of Atka, Alaska, United StatesBeforeM3.2100 km S of Atka, Alaska, United StatesBeforeM2.986 km SW of Atka, Alaska, United StatesBeforeM2.9102 km SW of Adak, Alaska, United StatesBeforeM3.487 km SSW of Unalaska, Alaska, United StatesBeforeM3.491 km SSW of Unalaska, Alaska, United StatesBeforeM2.8224 km WSW of Adak, Alaska, United StatesBeforeM2.8148 km E of Atka, Alaska, United StatesBeforeM2.9109 km SSE of Atka, Alaska, United StatesBeforeM3.1119 km WSW of Adak, 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 19, 2026, 06:33 AM 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.