M5.1 Earthquake 203 km W of Cable Beach, Australia — June 24, 2021
2021-06-24 06:57:03 UTC (2021-06-24) · approx. 2:57 PM UTC+8 local
Felt by 9 people across nearby locations.
On June 24, 2021 at 06:57 UTC, a magnitude 5.1 shallow crustal earthquake struck 203 km W of Cable Beach, Australia, at a depth of 10.0 km and coordinates -18.2030°, 120.3066°.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
120.3066°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake near Cable Beach, Australia?
The magnitude 5.1 earthquake that struck 203 km W of Cable Beach, Australia on June 24, 2021 at 06:57 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -18.2030°, 120.3066°, which is 203 km W of Cable Beach, Australia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000ep9i). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 24, 2021). M5.1 Earthquake 203 km W of Cable Beach, Australia — June 24, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000ep9i/