M3.0 Earthquake 15 km NNE of Ta`?, American Samoa — August 31, 2022
2022-08-31 21:55:09 UTC (2022-08-31) · approx. 10:55 AM UTC-11 local
On August 31, 2022 at 21:55 UTC, a magnitude 3.0 shallow crustal earthquake struck 15 km NNE of Ta`?, American Samoa, at a depth of 11.5 km and coordinates -14.1032°, -169.4689°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-169.4689°E
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Common Questions
How strong was the magnitude 3.0 earthquake near Ta`?, American Samoa?
The magnitude 3.0 earthquake that struck 15 km NNE of Ta`?, American Samoa on August 31, 2022 at 21:55 UTC had a depth of 11.5 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000ipiv). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 31, 2022). M3.0 Earthquake 15 km NNE of Ta`?, American Samoa — August 31, 2022. Retrieved November 6, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000ipiv/