5.5
Earthquake Details: 100 km S of Nikolski, Alaska
Sep 3, 2026, 20:21:15
A magnitude 5.5 earthquake occurred near 100 km S of Nikolski, Alaska on Sep 3, 2026 at 20:21:15. The seismic event was recorded at a depth of 10 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
View recent seismic activity near this event:
Technical Details
Depth10 km
Significance465
Latitude52.0506
Longitude-169.1387
Event IDus7000te4b
Magnitude5.5
Updated:Sep 4, 2026, 20:31:38 UTC
External Resources
View on USGS Official SiteLoading map...
Time & depth
- Local time
- Sep 3, 2026, 20:21:15
- UTC
- Sep 3, 2026, 20:21:15 UTC
10 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M5.177 km SSW of Nikolski, AlaskaBeforeM5.389 km SSW of Nikolski, AlaskaBeforeM5.293 km SSW of Nikolski, AlaskaBeforeM4.590 km SSW of Nikolski, AlaskaBeforeM4.684 km SSW of Nikolski, AlaskaBeforeM4.998 km SSW of Nikolski, AlaskaBeforeM4.892 km SSW of Nikolski, AlaskaBeforeM5.295 km SSW of Nikolski, AlaskaBeforeM5.191 km SSW of Nikolski, AlaskaBeforeM4.985 km SSW of Nikolski, AlaskaBeforeM4.6101 km SSW of Nikolski, AlaskaBeforeM5.278 km SSW of Nikolski, AlaskaBefore
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: Sep 4, 2026, 20:31 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.