M3.5 Earthquake 77 km SE of Sand Point, Alaska — August 29, 2023
2023-08-29 19:48:33 UTC (2023-08-29) · approx. 8:48 AM UTC-11 local
On August 29, 2023 at 19:48 UTC, a magnitude 3.5 shallow crustal earthquake struck 77 km SE of Sand Point, Alaska, at a depth of 35.0 km and coordinates 54.8498°, -159.6275°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-159.6275°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.5 earthquake near Sand Point, Alaska?
The magnitude 3.5 earthquake that struck 77 km SE of Sand Point, Alaska on August 29, 2023 at 19:48 UTC had a depth of 35.0 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 3.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000kvbe). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 29, 2023). M3.5 Earthquake 77 km SE of Sand Point, Alaska — August 29, 2023. Retrieved November 4, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kvbe/