M 5.1 Earthquake Strikes 129 km East of Yamada, 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 5.1 earthquake occurred 129 km east of Yamada, Japan, at a depth of 10 km on October 10, 2026, at 14:50:05 UTC. No tsunami advisory has been issued.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 20, 2026 and geographically references Eastern 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 5.1 mb earthquake struck 129 km east of Yamada, Japan, at a depth of 10 kilometers. The event occurred on October 10, 2026, at 14:50:05 UTC.
Location Details
The earthquake was centered at coordinates 39.5889° N latitude and 143.4485° E longitude, approximately 129 km east of Yamada, Japan. With a depth of 10 km, this is considered a shallow earthquake (less than 20 km), which can lead to more intense shaking at the surface compared to deeper events.
Impact Assessment
There have been no felt reports for this earthquake, and no tsunami advisory has been issued.
What You Should Know
This moderate earthquake, with a magnitude of 5.1, may cause damage to poorly constructed buildings. Be prepared for possible aftershocks, and follow safety tips such as dropping to the ground, covering your head and neck, and holding on to a sturdy object if shaking occurs.
Source
This information is from the United States Geological Survey (USGS). For more details, visit: https://earthquake.usgs.gov/earthquakes/eventpage/us6000srjx
Original source: USGS Official Notice ↗
Related Earthquakes
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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 (1,070 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to April 20, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.