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M7.4 earthquake, Japan, 1939-10-10

MagnitudeM7.4mw

This page is updated only once a day and is not an alert service. For current earthquake and tsunami information, check the Japan Meteorological Agency, the USGS and your local authorities.

Depth20 km

Time (UTC)1939-10-10 18:31

Rank in 19399 / 80among M6+

Rank since 1900551 / 14,458

Energy vs an M6×130approx.

off the east coast of Honshu, Japan · 38.51, 143.07

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1968 M8.2M8.2

1960 M8.0M8.0

1931 M7.9M7.9

1938 M7.8M7.8

1994 M7.8M7.8

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1939-08-22	1939-08-22 00:06	25 km	98 km E of Namie, Japan
M6.5 1939-02-16	1939-02-16 18:51	35 km	103 km ESE of Iwaki, Japan
M6.0 1938-12-20	1938-12-20 14:51	15 km	141 km ESE of ?funato, Japan
M6.3 1938-12-18	1938-12-18 21:45	15 km	154 km ESE of ?funato, Japan
M6.4 1938-12-13	1938-12-13 17:25	20 km	133 km SE of Kamaishi, Japan
M6.5 1938-12-07	1938-12-07 13:04	25 km	118 km ESE of ?funato, Japan
M6.5 1938-12-03	1938-12-03 12:11	25 km	100 km ESE of Iwaki, Japan
M7.0 1938-11-30	1938-11-30 02:29	30 km	99 km E of Iwaki, Japan
M6.5 1938-11-29	1938-11-29 13:39	25 km	127 km ESE of Iwaki, Japan
M6.3 1938-11-25	1938-11-25 08:20	25 km	92 km E of Iwaki, 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.