M3.1 Earthquake 21km NE of Independence, CA — May 9, 2022
2022-05-09 23:21:37 UTC (2022-05-09) · approx. 3:21 PM UTC-8 local
On May 9, 2022 at 23:21 UTC, a magnitude 3.1 shallow crustal earthquake struck 21km NE of Independence, CA, at a depth of 1.5 km and coordinates 36.9180°, -118.0077°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 801 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 90 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-118.0077°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Independence, CA?
The magnitude 3.1 earthquake that struck 21km NE of Independence, CA on May 9, 2022 at 23:21 UTC had a depth of 1.5 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ci40255256). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, May 9, 2022). M3.1 Earthquake 21km NE of Independence, CA — May 9, 2022. Retrieved July 22, 2022 from https://www.earthquaketracker.org/earthquakes/event/ci40255256/