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M7.7 earthquake, Japan, 1938-06-10

MagnitudeM7.7mw

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Depth20 km

Time (UTC)1938-06-10 09:53

Rank in 19388 / 149among M6+

Rank since 1900309 / 14,458

Energy vs an M6×309approx.

35 km N of Hirara, Japan · 25.12, 125.31

M6.5+ within 300 km (largest first)

1910 M8.1M8.1

1938 M7.7M7.7

1966 M7.5M7.5

1917 M7.3M7.3

1915 M7.3M7.3

1915 M7.2M7.2

1958 M7.2M7.2

1935 M7.0M7.0

1911 M7.0M7.0

1922 M7.0M7.0

1923 M7.0M7.0

1921 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1937-11-26	1937-11-26 10:45	60 km	32 km E of Yonakuni, Japan
M7.0 1935-12-17	1935-12-17 19:17	15 km	southeast of Taiwan
M6.1 1935-08-26	1935-08-26 16:31	15 km	104 km ESE of Hirara, Japan
M6.0 1935-01-18	1935-01-18 17:13	15 km	111 km S of Hirara, Japan
M6.4 1934-01-21	1934-01-21 06:55	15 km	67 km S of Ishigaki, Japan
M6.0 1934-01-20	1934-01-20 22:52	35 km	19 km NW of Yonakuni, Japan
M6.2 1926-08-07	1926-08-07 02:09	15 km	149 km NE of Hirara, Japan
M6.3 1926-08-06	1926-08-06 15:52	15 km	58 km ESE of Ishigaki, Japan
M6.1 1926-08-06	1926-08-06 12:06	35 km	56 km S of Yonakuni, Japan
M6.1 1926-08-06	1926-08-06 07:01	35 km	48 km SSE of Itoman, 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.