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M7.7 earthquake, Russia, 1950-02-28

MagnitudeM7.7mw

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Depth329 km

Time (UTC)1950-02-28 10:21

Rank in 19505 / 123among M6+

Rank since 1900251 / 14,458

Energy vs an M6×355approx.

100 km SSE of Korsakov, Russia · 45.88, 143.49

M6.5+ within 300 km (largest first)

1950 M7.7M7.7

1993 M7.6M7.6

1905 M7.3M7.3

1971 M7.3M7.3

2002 M7.3M7.3

1911 M7.0M7.0

1969 M7.0M7.0

1971 M6.8M6.8

1967 M6.7M6.7

1978 M6.7M6.7

1965 M6.7M6.7

1907 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1947-10-10	1947-10-10 07:32	15 km	102 km WSW of Kuril’sk, Russia
M7.0 1911-09-06	1911-09-06 00:54	320 km	79 km S of Korsakov, Russia
M6.6 1907-07-05	1907-07-05 15:46	150 km	7 km SW of Kitami, Japan
M7.3 1905-09-01	1905-09-01 02:45	255 km	22 km ESE of Makubetsu, Japan

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.