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M6.8 earthquake, Sea of Okhotsk, 1987-05-18

MagnitudeM6.8mw

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Depth542 km

Time (UTC)1987-05-18 03:07

Rank in 198725 / 166among M6+

Rank since 19002342 / 14,458

Energy vs an M6×16approx.

Sea of Okhotsk · 49.28, 147.69

M6.5+ within 300 km (largest first)

2012 M7.7M7.7

1907 M7.7M7.7

1900 M7.5M7.5

2002 M7.3M7.3

1987 M6.8M6.8

1984 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.5 1984-04-23	1984-04-23 21:40	414 km	263 km NNW of Kuril’sk, Russia
M6.3 1984-04-20	1984-04-20 06:31	582 km	Sea of Okhotsk
M6.4 1984-02-01	1984-02-01 07:28	573 km	255 km E of Poronaysk, Russia
M6.2 1972-08-21	1972-08-21 06:23	587 km	289 km E of Poronaysk, Russia
M6.4 1920-04-11	1920-04-11 23:03	15 km	Kuril Islands
M6.2 1916-02-06	1916-02-06 10:52	15 km	northwest of the Kuril Islands
M7.7 1907-05-25	1907-05-25 14:02	550 km	Sea of Okhotsk
M7.5 1900-01-31	1900-01-31 19:22	450 km	Sea of Okhotsk

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.