M3.3 Earthquake 98 km W of Elfin Cove, Alaska — July 14, 2020
2020-07-14 19:17:34 UTC (2020-07-14) · approx. 10:17 AM UTC-9 local
On July 14, 2020 at 19:17 UTC, a magnitude 3.3 shallow crustal earthquake struck 98 km W of Elfin Cove, Alaska, at a depth of 3.8 km and coordinates 58.1748°, -138.0248°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-138.0248°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.3 earthquake near Elfin Cove, Alaska?
The magnitude 3.3 earthquake that struck 98 km W of Elfin Cove, Alaska on July 14, 2020 at 19:17 UTC had a depth of 3.8 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 3.3 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak02090gqz3x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 14, 2020). M3.3 Earthquake 98 km W of Elfin Cove, Alaska — July 14, 2020. Retrieved September 19, 2020 from https://www.earthquaketracker.org/earthquakes/event/ak02090gqz3x/