A magnitude 6.5 earthquake was recorded 166 km W of Nikolski, Alaska on September 17, 2026 at 14:19 UTC, according to the United States Geological Survey (USGS).
Powerful M6.5 earthquake recorded near Nikolski, Alaska
USGS data place the earthquake at a depth of approximately 108.4 km, with epicentral coordinates near 52.772, -171.311.
Where was the earthquake located?
The reported location was 166 km W of Nikolski, Alaska. The earthquake parameters may be refined as additional seismic data are reviewed.
What we know so far
The available USGS data confirm the magnitude, location, depth and origin time of the earthquake. Information about its effects can change as additional reports become available.
The USGS event data showed 3 submitted felt reports when this draft was generated. This figure may change.
Tsunami information
The USGS structured event feed carries a tsunami-related flag. This is not, by itself, an official tsunami warning. Check the appropriate official warning center and local authorities before publication.
Earthquake details
- Magnitude: M6.5
- Location: 166 km W of Nikolski, Alaska
- Depth: 108.4 km
- Time: September 17, 2026 at 14:19 UTC
- Coordinates: 52.772, -171.311
- Magnitude type: mww
- USGS status: reviewed
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Primary data source: USGS earthquake event page
