4.3
Earthquake Details: 73 km SSE of Akutan, Alaska
Aug 21, 2026, 01:11:50
A magnitude 4.3 earthquake occurred near 73 km SSE of Akutan, Alaska on Aug 21, 2026 at 01:11:50. The seismic event was recorded at a depth of 35 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Technical Details
Depth35 km
Significance284
Latitude53.5240
Longitude-165.3313
Event IDus6000tmcf
Magnitude4.3
Updated:Aug 21, 2026, 05:05:35 UTC
External Resources
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Time & depth
- Local time
- Aug 21, 2026, 01:11:50
- UTC
- Aug 21, 2026, 01:11:50 UTC
35 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M3.292 km SSE of Sand Point, AlaskaBeforeM3.293 km SE of King Cove, AlaskaBeforeM3.389 km SE of King Cove, AlaskaBeforeM3.487 km SSW of Unalaska, AlaskaBeforeM3.491 km SSW of Unalaska, AlaskaBeforeM3.687 km SSE of Sand Point, AlaskaBeforeM3.589 km S of Sand Point, AlaskaBeforeM3.2172 km WSW of Nikolski, AlaskaBeforeM3.1176 km WSW of Nikolski, AlaskaBeforeM3.77 km SW of Sand Point, AlaskaBeforeM4.2100 km S of False Pass, AlaskaAfterM3.5104 km SSE of Sand Point, AlaskaAfter
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 21, 2026, 05:05 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.