A magnitude 5.1 earthquake, which measured a weak 5 on the shindo (intensity) scale, was detected in coastal Izu Oshima, on Friday at 6:09 p.m. In the same vicinity, a magnitude 4.7 earthquake, which measured 4 on the shindo scale, was detected at a depth of 10 kilometers in coastal Niijima-Kozushima, at 8:36 p.m.
No tsunami warning was issued.
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