4.0
Earthquake Details: 103 km SSW of Nikolski, Alaska
Sep 4, 2026, 14:39:51
A magnitude 4.0 earthquake occurred near 103 km SSW of Nikolski, Alaska on Sep 4, 2026 at 14:39:51. The seismic event was recorded at a depth of 20.5 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
View recent seismic activity near this event:
Technical Details
Depth20.5 km
Significance246
Latitude52.0660
Longitude-169.3850
Event IDaka2026rnmsql
Magnitude4.0
Updated:Sep 4, 2026, 15:44:11 UTC
External Resources
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Time & depth
- Local time
- Sep 4, 2026, 14:39:51
- UTC
- Sep 4, 2026, 14:39:51 UTC
20.5 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby event sequence · 12
M4.998 km SSW of Nikolski, AlaskaBeforeM5.295 km SSW of Nikolski, AlaskaBeforeM5.191 km SSW of Nikolski, AlaskaBeforeM4.985 km SSW of Nikolski, AlaskaBeforeM5.278 km SSW of Nikolski, AlaskaBeforeM6.191 km SSW of Nikolski, AlaskaBeforeM6.2105 km SSW of Nikolski, AlaskaBeforeM6.384 km SSW of Nikolski, AlaskaBeforeM4.892 km SSW of Nikolski, AlaskaBeforeM5.297 km SSW of Nikolski, AlaskaBeforeM4.981 km SW of Nikolski, AlaskaBeforeM4.990 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, 15:44 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.