4.5
Earthquake Details: 90 km SSW of Nikolski, Alaska
Sep 1, 2026, 07:45:38
A magnitude 4.5 earthquake occurred near 90 km SSW of Nikolski, Alaska on Sep 1, 2026 at 07:45:38. The seismic event was recorded at a depth of 37.56 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Technical Details
Depth37.56 km
Significance312
Latitude52.1624
Longitude-169.2588
Event IDus7000tdal
Magnitude4.5
Updated:Sep 1, 2026, 08:08:39 UTC
External Resources
View on USGS Official SiteLoading map...
Time & depth
- Local time
- Sep 1, 2026, 07:45:38
- UTC
- Sep 1, 2026, 07:45:38 UTC
37.56 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M3.7100 km SE of Atka, AlaskaBeforeM3.792 km SE of Atka, AlaskaBeforeM3.791 km SE of Akutan, AlaskaBeforeM4.292 km WNW of False Pass, AlaskaBeforeM5.177 km SSW of Nikolski, AlaskaBeforeM5.389 km SSW of Nikolski, AlaskaBeforeM5.293 km SSW of Nikolski, AlaskaBeforeM3.894 km SSW of Nikolski, AlaskaBeforeM3.785 km SSW of Nikolski, AlaskaBeforeM4.5105 km SSW of Nikolski, AlaskaBeforeM4.6Fox Islands, Aleutian IslandsBeforeM4.6Fox Islands, Aleutian IslandsAfter
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 1, 2026, 08:08 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.