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M6.6 earthquake, Japan, 1964-05-07

MagnitudeM6.6mw

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Depth18 km

Time (UTC)1964-05-07 20:12

Rank in 196428 / 144among M6+

Rank since 19003324 / 14,458

Energy vs an M6×9approx.

69 km WSW of Fukaura, Japan · 40.52, 139.12

M6.5+ within 300 km (largest first)

1931 M7.9M7.9

1993 M7.7M7.7

1964 M7.6M7.6

2025 M7.6M7.6

1901 M7.5M7.5

1983 M7.4M7.4

1901 M7.2M7.2

1939 M7.2M7.2

1945 M7.2M7.2

1914 M7.0M7.0

1900 M7.0M7.0

2003 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.0 1964-05-07	1964-05-07 07:58	27 km	83 km WSW of Fukaura, Japan
M6.1 1962-04-30	1962-04-30 02:26	15 km	20 km SSE of Ichinoseki, Japan
M6.8 1960-07-29	1960-07-29 17:31	53 km	51 km ENE of Kuji, Japan
M6.1 1954-07-09	1954-07-09 18:28	263 km	136 km WNW of Noshiro, Japan
M6.4 1951-10-18	1951-10-18 08:26	65 km	66 km E of Mutsu, Japan
M6.1 1951-03-10	1951-03-10 22:03	64 km	Hokkaido, Japan region
M6.6 1950-06-27	1950-06-27 15:41	15 km	49 km W of Iwanai, Japan
M7.2 1945-02-10	1945-02-10 04:57	59 km	66 km ENE of Misawa, Japan
M6.4 1944-10-02	1944-10-02 20:29	58 km	80 km ENE of Misawa, Japan
M6.2 1944-03-21	1944-03-21 22:09	54 km	94 km ENE of Hachinohe, 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.