M3.7 Earthquake 116 km SSE of Sand Point, Alaska — October 19, 2020
2020-10-19 22:52:09 UTC (2020-10-19) · approx. 11:52 AM UTC-11 local
On October 19, 2020 at 22:52 UTC, a magnitude 3.7 shallow crustal earthquake struck 116 km SSE of Sand Point, Alaska, at a depth of 29.4 km and coordinates 54.4229°, -159.6091°.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 5.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 215 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-159.6091°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.7 earthquake near Sand Point, Alaska?
The magnitude 3.7 earthquake that struck 116 km SSE of Sand Point, Alaska on October 19, 2020 at 22:52 UTC had a depth of 29.4 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 3.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.7 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000camt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 19, 2020). M3.7 Earthquake 116 km SSE of Sand Point, Alaska — October 19, 2020. Retrieved December 29, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000camt/