M3.0 Earthquake 90 km WSW of Karluk, Alaska — July 31, 2026
2026-07-31 13:36:05 UTC (53 min ago) · approx. 3:36 AM UTC-10 local
On July 31, 2026 at 13:36 UTC, a magnitude 3.0 intermediate depth earthquake struck 90 km WSW of Karluk, Alaska, at a depth of 84.8 km and coordinates 57.1840°, -155.7710°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-155.7710°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Karluk, Alaska?
The magnitude 3.0 earthquake that struck 90 km WSW of Karluk, Alaska on July 31, 2026 at 13:36 UTC had a depth of 84.8 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026patvnn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 31, 2026). M3.0 Earthquake 90 km WSW of Karluk, Alaska — July 31, 2026. Retrieved July 31, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026patvnn/