M4.5 Earthquake in the Santa Cruz Islands region — May 30, 2021
2021-05-30 17:50:34 UTC (2021-05-30) · approx. 4:50 AM UTC+11 local
On May 30, 2021 at 17:50 UTC, a magnitude 4.5 shallow crustal earthquake struck in the Santa Cruz Islands region, at a depth of 52.2 km and coordinates -10.8757°, 164.1434°.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
164.1434°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake in the Santa Cruz Islands region?
The magnitude 4.5 earthquake that struck in the Santa Cruz Islands region on May 30, 2021 at 17:50 UTC had a depth of 52.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -10.8757°, 164.1434°, which is in the Santa Cruz Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000e9f7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 30, 2021). M4.5 Earthquake in the Santa Cruz Islands region — May 30, 2021. Retrieved August 7, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000e9f7/