M 5.0 Earthquake 255 km SE of Katsuura, Japan
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 5.0 earthquake occurred 255 km southeast of Katsuura, Japan, at a depth of approximately 67 km on May 12, 2026, at 03:29:55 UTC.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 16, 2026 and geographically references Japan. 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, Japan.
What Happened
A magnitude 5.0 mb earthquake occurred 255 km SE of Katsuura, Japan, at a depth of 66.8 km. The event took place on May 12, 2026, at 03:29:55 UTC.
Location Details
The earthquake was centered at coordinates 33.4772° N, 142.225° E, approximately 255 km southeast of Katsuura, Japan. With a depth of 66.8 km, this is an intermediate depth earthquake (between 20-70 km), which often relates to tectonic activity in subduction zones.
Impact Assessment
There have been no felt reports for this earthquake. No tsunami advisory has been issued, and no alert level was provided.
What You Should Know
This moderate earthquake could be followed by aftershocks, as is common with seismic events. Safety tips include staying indoors during shaking, dropping to the ground, covering your head and neck, and holding onto a sturdy object if possible.
Source
Information from the United States Geological Survey: https://earthquake.usgs.gov/earthquakes/eventpage/us6000sqjk
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 (1,049 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to April 16, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.