Deep magnitude 6.0 earthquake strikes off Shima, Japan

A magnitude 6.0 earthquake struck 58 kilometres south-southeast of Shima, Japan at 22:15 UTC on October 31 at a depth of 352.4 kilometres, with the USGS issuing a green alert and no tsunami threat reported.

Why it matters: The depth kept surface shaking weak, at a maximum estimated intensity of III, so the USGS rates the likelihood of casualties or damage as low despite the size of the event.

Data as of US Geological Survey event data (event us7000tuku) as reported October 31, 2026, read in full in this run; the wire item first arrived via a Russian-language feed noting a magnitude 6.1 reading, and every figure here is the USGS figure. Developing item.

A magnitude 6.0 earthquake struck at 22:15 UTC on October 31, 58 kilometres south-southeast of Shima, on the southeastern coast of Honshu, Japan, according to the US Geological Survey. The event was deep, with its focus 352.4 kilometres below the surface, which spread the shaking widely but kept it weak at ground level.

The USGS issued a green PAGER alert, indicating a low likelihood of casualties or damage, put the maximum estimated intensity at III on the Modified Mercalli scale, and reported no tsunami threat from the event. No damage or casualties had been reported in the first coverage of the quake.

Deep magnitude 6.0 earthquake strikes off Shima, Japan

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