M3.1 Earthquake 93 km SSE of Sand Point, Alaska — November 11, 2023
2023-11-11 20:26:04 UTC (2023-11-11) · approx. 9:26 AM UTC-11 local
On November 11, 2023 at 20:26 UTC, a magnitude 3.1 shallow crustal earthquake struck 93 km SSE of Sand Point, Alaska, at a depth of 9.1 km and coordinates 54.5942°, -159.8186°.
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
-159.8186°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Sand Point, Alaska?
The magnitude 3.1 earthquake that struck 93 km SSE of Sand Point, Alaska on November 11, 2023 at 20:26 UTC had a depth of 9.1 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.
Actions
Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000lef8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 11, 2023). M3.1 Earthquake 93 km SSE of Sand Point, Alaska — November 11, 2023. Retrieved January 13, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lef8/