M 5.1 Earthquake 115 km East of Miyako, 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 115 km east of Miyako, Japan, at a depth of 25 km on September 12, 2026, at 08:29:43 UTC. No tsunami advisory or alerts have been reported.
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 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 115 km east of Miyako, Japan, at a depth of 25 kilometers. The event occurred on September 12, 2026, at 08:29:43 UTC.
Location Details
The earthquake was located at coordinates 39.7888° N, 143.2807° E, approximately 115 km east of Miyako, Japan. At a depth of 25 km, this is an intermediate-depth earthquake (between 20-70 km), which can result in shaking over a broader area compared to shallower events.
Impact Assessment
There have been no felt reports for this earthquake. No tsunami advisory has been issued, and no alert level is specified.
What You Should Know
This moderate earthquake (magnitude 5.1) can potentially cause damage to poorly constructed buildings. Be aware of the possibility of aftershocks and follow basic safety tips, such as securing heavy objects and knowing how to drop, cover, and hold on during shaking.
Source
Information from the United States Geological Survey (USGS): https://earthquake.usgs.gov/earthquakes/eventpage/us6000sriv
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 (1,092 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.