M3.7 Earthquake near Rat Islands, Aleutian Islands, Alaska — July 31, 2020
2020-07-31 22:58:56 UTC (2020-07-31) · approx. 10:58 AM UTC+12 local
On July 31, 2020 at 22:58 UTC, a magnitude 3.7 shallow crustal earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 61.2 km and coordinates 52.0786°, 175.2831°.
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
175.2831°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.7 earthquake near Rat Islands, Aleutian Islands, Alaska?
The magnitude 3.7 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on July 31, 2020 at 22:58 UTC had a depth of 61.2 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: us6000ba2y). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 31, 2020). M3.7 Earthquake near Rat Islands, Aleutian Islands, Alaska — July 31, 2020. Retrieved October 10, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000ba2y/