M3.1 Earthquake 176 km WSW of Nikolski, Alaska — August 19, 2026
2026-08-19 19:31:02 UTC (1 hour ago) · approx. 8:31 AM UTC-11 local
On August 19, 2026 at 19:31 UTC, a magnitude 3.1 intermediate depth earthquake struck 176 km WSW of Nikolski, Alaska, at a depth of 88.0 km and coordinates 52.0880°, -171.0600°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-171.0600°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Nikolski, Alaska?
The magnitude 3.1 earthquake that struck 176 km WSW of Nikolski, Alaska on August 19, 2026 at 19:31 UTC had a depth of 88.0 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026qkicfq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 19, 2026). M3.1 Earthquake 176 km WSW of Nikolski, Alaska — August 19, 2026. Retrieved August 19, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026qkicfq/