M 5.7 Earthquake West of Macquarie Island
Areazine synthesizes this USGS earthquake report directly from USGS's official public data feed. See our methodology for full source attribution and refresh cadence.
A magnitude 5.7 earthquake occurred west of Macquarie Island on May 20, 2026, at a depth of 10 km.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on July 19, 2026 and geographically references west of Macquarie Island. Its severity classification of "medium" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Earthquakes - determines the monitoring protocol behind it, which shapes what follow-up action (checking for structural damage, watching for aftershocks, reviewing local building codes) is relevant and which agency holds authority over the assessment.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are earthquake, seismic, usgs, Macquarie Island.
What Happened
A M 5.7 mww earthquake struck west of Macquarie Island at 12:26:32 UTC on May 20, 2026 (Unix time 1781919992273). The event was reviewed by USGS with magnitude type mww.
Location Details
The epicenter was located at latitude -57.129, longitude 147.9179, approximately west of Macquarie Island. The depth of 10 km classifies it as a shallow earthquake (less than 20 km).
Impact Assessment
No felt reports were recorded. The maximum Modified Mercalli Intensity was 0. A green alert level was issued, indicating low likelihood of casualties or damage. No tsunami advisory was issued (tsunami flag: 0).
What You Should Know
Earthquakes of this magnitude are classified as moderate and can cause damage to poorly constructed buildings. Aftershocks are possible following any seismic event.
Source
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (904 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to July 19, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.