3.2
Earthquake Details: 100 km S of Atka, Alaska, United States
8/18/2026, 4:33:58 AM
A magnitude 3.2 earthquake occurred near 100 km S of Atka, Alaska, United States on 8/18/2026 at 4:33:58 AM. 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
Significance158
Latitude51.2910
Longitude-174.2510
Event IDaka2026qhidrc
Magnitude3.2
Updated:8/18/2026, 8:57:22 AM
External Resources
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Time & depth
- Local time
- 8/18/2026, 4:33:58 AM
- UTC
- 8/18/2026, 4:33:58 AM UTC
20 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 StatesBeforeM3.0163 km SW of Nikolski, Alaska, United StatesBeforeM2.9161 km SW of Nikolski, Alaska, United StatesBeforeM3.177 km W of Nikolski, Alaska, United StatesBeforeM3.457 km SSE of Adak, Alaska, United StatesBeforeM3.046 km S of Atka, Alaska, United StatesBeforeM2.986 km SW of Atka, Alaska, United StatesAfterM2.9102 km SW of Adak, Alaska, United StatesAfterM2.9109 km SSE of Atka, Alaska, United StatesAfterM3.0188 km SSE of Atka, Alaska, United StatesAfterM3.1119 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 18, 2026, 08:57 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.