2.9
Earthquake Details: 86 km SW of Atka, Alaska, United States
8/18/2026, 7:16:48 AM
A magnitude 2.9 earthquake occurred near 86 km SW of Atka, Alaska, United States on 8/18/2026 at 7:16:48 AM. The seismic event was recorded at a depth of 19.9 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Technical Details
Depth19.9 km
Significance129
Latitude51.5610
Longitude-174.9320
Event IDaka2026qhnoxx
Magnitude2.9
Updated:8/18/2026, 9:11:29 AM
External Resources
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Time & depth
- Local time
- 8/18/2026, 7:16:48 AM
- UTC
- 8/18/2026, 7:16:48 AM UTC
19.9 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M3.0182 km E of Atka, Alaska, United StatesBeforeM3.0240 km WSW of Adak, Alaska, United StatesBeforeM2.8236 km WSW of Adak, Alaska, United StatesBeforeM2.7239 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 StatesBeforeM2.7170 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 StatesBeforeM2.9102 km SW 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 18, 2026, 09:11 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.