M6.8 Earthquake in the Macquarie Island region — April 29, 2025
2025-04-29 14:53:37 UTC (2025-04-29) · approx. 12:53 AM UTC+10 local
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On April 29, 2025 at 14:53 UTC, a magnitude 6.8 shallow crustal earthquake struck in the Macquarie Island region, at a depth of 19.0 km and coordinates -54.2616°, 155.6446°.0 The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 475 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 711, making it a moderate-impact event.
Physical scale: An earthquake of magnitude 6.8 releases seismic energy equivalent to roughly 239 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 30 km — a useful intuition for the size of the slip patch on the fault.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from submitted 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
155.6446°E
Technical Information
Common Questions
How strong was the magnitude 6.8 earthquake in the Macquarie Island region?
The magnitude 6.8 earthquake that struck in the Macquarie Island region on April 29, 2025 at 14:53 UTC had a depth of 19.0 km. For context, this was a strong earthquake capable of causing significant damage.
Where did the earthquake occur?
The earthquake epicenter was located at -54.2616°, 155.6446°, which is in the Macquarie Island region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 6.8 earthquakes can continue for weeks to months and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000pvtr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 29, 2025). M6.8 Earthquake in the Macquarie Island region — April 29, 2025. Retrieved July 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pvtr/