M3.5 Earthquake 80 km ESE of Sand Point, Alaska — July 27, 2020
2020-07-27 21:44:13 UTC (2020-07-27) · approx. 10:44 AM UTC-11 local
On July 27, 2020 at 21:44 UTC, a magnitude 3.5 shallow crustal earthquake struck 80 km ESE of Sand Point, Alaska, at a depth of 23.6 km and coordinates 55.0568°, -159.3410°.
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
-159.3410°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 80 km ESE of Sand Point, Alaska on July 27, 2020 at 21:44 UTC had a depth of 23.6 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: us6000b51y). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 27, 2020). M3.5 Earthquake 80 km ESE of Sand Point, Alaska — July 27, 2020. Retrieved October 3, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b51y/