M4.2 earthquake - off the east coast of Honshu, Japan
1900 d ago · 4 Aug 2021, 11:57 UTC off the east coast of Honshu, Japan
What happened
A magnitude 4.2 earthquake struck off the east coast of Honshu, Japan on 4 Aug 2021, 11:57 UTC at a depth of 10 km.
Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was a shallow earthquake, which tends to be felt more strongly at the surface.
The nearest town in our records is Choshi, about 154 km away in Chiba, Japan.
Timeline
First reported by USGS
17 Oct 2026, 10:19 UTC
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